Identification_Information:
  Citation:
    Citation_Information:
      Originator: R. W. Tabor
      Originator: R. A. Haugerud
      Originator: Wes Hildreth
      Originator :E. H. Brown
      Publication_Date: 2003 (paper copy); 2006 (digital database)
      Title: Geologic Map of the Mount Baker 30- by 60-Minute Quadrangle, Washington
       Edition: 1.0
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
          Series_Name: U.S. Geological Survey Miscellaneous Investigation Series
          Issue_Identification: I-2660
        Publication_Information:
          Publication_Place: Menlo Park, CA
          Publisher: U.S. Geological Survey
        Online_Linkage: http://pubs.usgs.gov/imap/i2660/
  Description:
    Abstract: Abstract: This digital map database has been prepared by R.W. Tabor from the published Geologic map of the Mount Baker 30- by 60 Minute Quadrangle, Washington.  Together with the accompanying text files as PDF, it provides information on the geologic structure and stratigraphy of the area covered.  The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey.  The authors mapped most of the geology at 1:100,000.  The Quaternary contacts and structural data have been much simplified for the 1:100,000-scale map and database. The spatial resolution (scale) of the database is 1:100,000 or smaller.
    Purpose: This database depicts the distribution of geologic materials and structures at a regional (1:100,000) scale.  The report is intended to provide geologic information for the regional study of materials properties, earthquake shaking, landslide potential, mineral hazards, seismic velocity, and earthquake faults.  In addition, the report contains information and interpretations about the regional geologic history and framework.  However, the regional scale of this report does not provide sufficient detail for site development purposes.
     Supplemental_Information
DIGITAL COMPILATION- R. W. Tabor and R. A. Haugerud scanned, vectorized and edited the geologic map information from stable ink-on-mylar author compilation at 1:100,000 scale. ARC/INFO vectorized coverage of the geology was later edited by K. Nimtz with assistance from Susan Mayfield and Richard D. Koch.  
The digital compilation was done in versions 7.1.1 through 8.2 of ARC/INFO with version 3.0 of the menu interface ALACARTE (Fitzgibbon and Wentworth, 1991, Fitzgibbon, 1991, Wentworth and Fitzgibbon, 1991).  
BASE MAP-The geology of this dataset was mapped on dimensionally stable chronflex prints of the Mount Baker 1:100,000 scale topographic quadrangle.  Although no base map material is included in this dataset, a vectorized version of the base can be downloaded from http://edcftp.cr.usgs.gov/pub/data/DLG/100K/M/. 
Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2003 (paper); 2006 (digital database)
    Currentness_Reference: 2003.
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -122.009828
      East_Bounding_Coordinate: -120.979965
      North_Bounding_Coordinate: 49.013477
      South_Bounding_Coordinate: 48.486950
  Keywords:
    Theme:
        Theme_Keyword_Thesaurus: none

        Theme_Keyword: Alma Creek pluton
        Theme_Keyword: alpine glaciation
        Theme_Keyword: bedrock geology
        Theme_Keyword: Bell Pass melange
        Theme_Keyword: Cascade Magmatic Arc
        Theme_Keyword: Cascade River Schist
        Theme_Keyword: Cascade Pass dike
        Theme_Keyword: Cascade Pass Family
        Theme_Keyword: Chelan Mountains terrane
        Theme_Keyword: Chilliwack Composite Batholith
        Theme_Keyword: Chilliwack Group
        Theme_Keyword: Chuckanut Formation
        Theme_Keyword: Conglomerate of Bald Mountain
        Theme_Keyword: Cordilleran Ice Sheet
        Theme_Keyword: Cultus Formaion
        Theme_Keyword: Darrington Phyllite
        Theme_Keyword: drainage diversion
        Theme_Keyword: Easton Metamorphic Suite
        Theme_Keyword: Easton terrane
        Theme_Keyword: Eldorado Orthogneiss
        Theme_Keyword: Entiat Fault
        Theme_Keyword: Excelsior nappe
        Theme_Keyword: erosional landscape
        Theme_Keyword: fault offset
        Theme_Keyword: Fraser glaciation
        Theme_Keyword: geologic history
        Theme_Keyword: geologic structures
        Theme_Keyword: geology
        Theme_Keyword: glacial geology
        Theme_Keyword: Glacier Extensional Fault
        Theme_Keyword: Hannegan Volcanics
        Theme_Keyword: Hidden Lake stock
        Theme_Keyword: Hozomeen Group
        Theme_Keyword: Index Family
        Theme_Keyword: Kushan Caldera
        Theme_Keyword: landslide deposits
        Theme_Keyword: Marblemount pluton
        Theme_Keyword: Magic Mountain Gneiss
        Theme_Keyword: melange
        Theme_Keyword: metamorphism
        Theme_Keyword: Mount Baker volcanic center
        Theme_Keyword: Napeequa Schist
        Theme_Keyword: Nooksack Formation
        Theme_Keyword: North Cascades
        Theme_Keyword: Northwest Cascade System
        Theme_Keyword: orogenic deposits
        Theme_Keyword: orthogneiss 
        Theme_Keyword: Orthogneiss of Haystack Creek
        Theme_Keyword: Orthogneiss of Marble Creek
        Theme_Keyword: Phyllite and schist of Little Jack Mountain
        Theme_Keyword: radiometric ages
        Theme_Keyword: rock samples
        Theme_Keyword: Ruby Creek Heterogeneous Plutonic Belt
        Theme_Keyword: Semischist anf phyllite of Mount Josephine
        Theme_Keyword: Shuksan Greenschist
        Theme_Keyword: Shuksan Nappe
        Theme_Keyword: Skagit Gneiss
        Theme_Keyword: Skymo Complex
        Theme_Keyword: Slate of Rinker Ridge
        Theme_Keyword: Snoqualmie Family
        Theme_Keyword: Straight Creek Fault
        Theme_Keyword: stitiching units
        Theme_Keyword: Sulphur Mountain pluton
        Theme_Keyword: surficial geology
        Theme_Keyword: terrane overlap units
        Theme_Keyword: Twin Sisters Dunite
        Theme_Keyword: transtensional deposits
        Theme_Keyword: ultramafic rocks
        Theme_Keyword: Vedder Complex
        Theme_Keyword: Vashon stade
        Theme_Keyword: Volcanic rocks of Big Bosom Buttes
        Theme_Keyword: Volcanic rocks of Mount Rahm
        Theme_Keyword: Wells Creek Volcanic Member
        Theme_Keyword: Yellow Aster Complex
        Theme_Keyword_Thesaurus: none
Place:
        Place_Keyword_Thesaurus: none
        Place_Keyword: Pacific Northwest
        Place_Keyword: North Cascade Mountains
        Place_Keyword: Skagit River
        Place_Keyword: Washington
Place:
        Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
        Place_Keyword: Whatcom County
        Place_Keyword: Skagit County
  Access_Constraints: none.
  Use_Constraints: SPATIAL RESOLUTION- Uses of this digital geologic map should not violate the spatial resolution of the data.  Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data.  The fact that this database was edited for a scale of 1:100,000 means that higher resolution information is not present in the dataset.  Plotting at scales larger than 1:100,000 will not yield greater real detail, although it may reveal fine- scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data..
  Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535
Spatial_Data_Organization_Information: mbgeology is contact, fault, and polygon coverage; bmlines is fold axes, cross-section lines, river-cut terrace boundaries, and mineral isograds; mbisofoss is locations of samples analysed for isotope age and identified;  mbsmoc is locations of small outcrops of ultramafic rocks, limestone, or marble; mbstruct  is structural symbols: bedding: foliation, lineation, and fault balls (These symbols will not show on screen or plot without appropriate symbol sets available in Alacarte); mbrocksamp is a point coverage of rock samples archived at North Cascades National Park, Marblemount.  For more information about the rock samples  contact the curator at Marblemount, telephone 360 873 4500.
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Complete chain
      Point_and_Vector_Object_Count: 8250
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Label point
      Point_and_Vector_Object_Count: 2765
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
      Point_and_Vector_Object_Count: 2765
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
      Point_and_Vector_Object_Count: 49
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Transverse Mercator
        Transverse_Mercator:
          Scale_Factor_at_Central_Meridian: 0.999600
          Longitude_of_Central_Meridian: -123.000000
          Latitude_of_Projection_Origin: 0.000000
          False_Easting: 500000.000000
          False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000128
          Ordinate_Resolution: 0.000128
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: D_Clarke_1866
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.400000
      Denominator_of_Flattening_Ratio: 294.978698
Entity_and_Attribute_Information:
  Detailed_Description: mbgeology
    Entity_Type:
      Entity_Type_Label: mbgeology.aat
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: FNODE#
      Attribute_Definition: Internal node number for the beginning of an arc (from-node).
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: TNODE#
      Attribute_Definition: Internal node number for the end of an arc (to-node).
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: LPOLY#
      Attribute_Definition: Internal node number for the left polygon.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: RPOLY#
      Attribute_Definition: Internal node number for the right polygon.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: LENGTH
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: MBGEOLOGY#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: MBGEOLOGY-ID
      Attribute_Definition: User-defined feature number.
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: LTYPE
  Detailed_Description:
Attribute_Definition: Geologic contact description
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: contact, certain 
          Enumerated_Domain_Value_Definition: Boundary between geologic units established in reconnaissance mapping by authors or compiled from other workers
        Enumerated_Domain:
          Enumerated_Domain_Value: contact, concealed 
          Enumerated_Domain_Value_Definition: Boundary between geologic units that is concealed by a younger units
        Enumerated_Domain:
          Enumerated_Domain_Value: contact, inferred 
          Enumerated_Domain_Value_Definition: Boundary of uncertain location between geologic units; contact exists but location inferred from indirect evidence(Shown with short dash beteen units on published map)
        Enumerated_Domain:
          Enumerated_Domain_Value: contact, approx. located 
          Enumerated_Domain_Value_Definition: Boundary that is approximately located between geologic units (Shown with long dash between units on published map)
        Enumerated_Domain:
          Enumerated_Domain_Value: high-angle fault, certain 
          Enumerated_Domain_Value_Definition: Trace of fault established in reconnaissance mapping by authors or compiled from other workers
        Enumerated_Domain:
          Enumerated_Domain_Value: high-angle fault, inferred 
          Enumerated_Domain_Value_Definition Uncertain location of fault; positional accuracy uncertain but but general location inferred from indirect evidence
        Enumerated_Domain:
          Enumerated_Domain_Value: high-angle fault, concealed 
          Enumerated_Domain_Value_Definition: Trace of fault concealed by younger unit; positional accuracy uncertain
        Enumerated_Domain:
          Enumerated_Domain_Value: high-angle fault, approx. located 
          Enumerated_Domain_Value_Definition: Very uncertain location of fault
        Enumerated_Domain:
          Enumerated_Domain_Value: thrust fault, certain 
          Enumerated_Domain_Value_Definition: Trace of fault established in reconnaissance mapping by authors or compiled from other workers
        Enumerated_Domain:
          Enumerated_Domain_Value: thrust fault, concealed 
          Enumerated_Domain_Value_Definition: Trace of thrust fault concealed by younger unit; positional accuracy uncertain
          Enumerated_Domain_Value: thrust fault, inferred 
          Enumerated_Domain_Value_Definition Uncertain location of fault; positional accuracy uncertain but but general location inferred from indirect evidence
        Enumerated_Domain:
          Enumerated_Domain_Value: map boundary 
          Enumerated_Domain_Value_Definition: map boundary of this 1:100,000 study
        Enumerated_Domain:
          Enumerated_Domain_Value: glacier boundary 
          Enumerated_Domain_Value_Definition: Boundary of glacier derived from Mount Baker 1:100,000 scale topographic map
        Enumerated_Domain:
          Enumerated_Domain_Value: scratch boundary 
          Enumerated_Domain_Value_Definition: Boundary that is indefinate, gradational or very approximately located (shown without a line between units on published map)
        Enumerated_Domain:
          Enumerated_Domain_Value: atten. fault, certain 
          Enumerated_Domain_Value_Definition: Extensional fault, location certain
        Enumerated_Domain:
          Enumerated_Domain_Value: atten. fault,, concealed 
          Enumerated_Domain_Value_Definition: Trace of extensional fault concealed by younger unit; positional accuracy uncertain
          Enumerated_Domain_Value: atten. fault, inferred 
          Enumerated_Domain_Value_Definition Uncertain location of extensional fault; positional accuracy uncertain but but general location inferred from indirect evidence
        Enumerated_Domain:
          Enumerated_Domain_Value: water boundary
          Enumerated_Domain_Value_Definition: Boundary of open water derived from Mount Baker 1:100,000 scale topographic map
        Enumerated_Domain:
          Enumerated_Domain_Value: limebed 
          Enumerated_Domain_Value_Definition: Trace of limestone or marble bed
    Entity_Type:
      Entity_Type_Label: mbgeology.pat
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: AREA
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: PERIMETER
      Attribute_Definition: Perimeter of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: MBGEOLOGY#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: MBGEOLOGY-ID
      Attribute_Definition: User-defined feature number.
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: PTYPE
    Attribute_Definition: symbol of geologic unit
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Ql
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Non-glacial deposits: Landslide deposits (Holocene)-Diamictons composed of angular clasts of bedrock and surficial deposits derived from upslope.  Commonly shown on map without unit label; arrows denote downslope direction of movement.  Includes both transported material and unstable scarp area if present.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qlo
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Non-glacial deposits: Older landslide deposits (Holocene and Pleistocene)-Similar to diamictons described above but with data to show age.  Generally large and with somewhat subdued hilly topography.  Church Mountain landslide in the North Fork of the Nooksack, the Bear Creek  landslide, and landslides in the Skagit River valley south of Damnation Creek.
        Enumerated_Domain:
          Enumerated_Domain_Value:Qmw
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Non-glacial deposits: Mass-wastage deposits (Holocene and Pleistocene)-Colluvium, soil, or landslide debris with indistinct morphology, mapped where sufficiently continuous and thick to obscure underlying material.  Unit is gradational with units Qf and Ql.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qt
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Non-glacial deposits: Talus deposits (Holocene)-Non-sorted angular gravel to boulder diamicton.  At lower elevations gradational with unit Qf.  At higher elevations includes small rock-avalanche deposits as well as some Holocene moraines, rock glaciers, and protalus rampart deposits that lack characteristic morphology.  Surfaces generally unvegetated.  Mostly mapped from aerial photos in alpine valleys.  Grades into unit Qf.
        Enumerated_Domain:
          Enumerated_Domain_Value:Qf
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Non-glacial deposits: Alluvial-fan deposits (Holocene)-Poorly sorted cobble to boulder gravel, deposited either as a discrete lobe at the intersection of a steep stream with a valley floor of lower gradient or as a broad apron on steep sideslopes.  Gradational with unit Qt, especially in granitic terrane where fans along major valleys commonly merge with talus.   Mostly mapped from topography and aerial photos in alpine valleys.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyal
          Enumerated_Domain_Value_Definition: Non-glacial deposits: SURFICIAL DEPOSITS: Younger alluvium (Holocene)-Moderately sorted deposits of cobble gravel to pebbly sand along rivers and streams.  Generally unvegetated surfaces; gradational with both units Qf and Qb.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qb
          Enumerated_Domain_Value_Definition: Non-glacial deposits: SURFICIAL DEPOSITS: Bog deposits (Holocene)-Peat and alluvium.  Poorly drained and intermittently wet.  Grades into unit Qyal.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qoal
          Enumerated_Domain_Value_Definition: Non-glacial deposits: SURFICIAL DEPOSITS: Older alluvium (Holocene and Pleistocene)-Deposits similar to unit Qyal, but standing above modern-flood plain level and generally separated from it by a distinct topographic scarp.  Age of deposits presumed younger than that of unit Qvr, but relations are ambiguous in some localities. In Middle Fork of the Nooksack River valley, may include lahar deposits from Mount Baker (Easterbrook and Kovanen, 1996).
        Enumerated_Domain:
          Enumerated_Domain_Value: Qam
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS:  Glacial deposits: Alpine glacial moraine (Holocene)-Boulder till; sparsely vegetated to unvegetated.  Commonly shown with symbolized moraine crest on bedrock unit.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qag
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Glacial deposits: Alpine glacial deposits (Holocene and Pleistocene)-Deposits ranging from boulder till in uplands and upvalley to gravel or sand outwash on broad valley floors.  On valley sides and uplands, includes areas veneered with drift but also includes subordinate areas of bedrock, alluvial fans, colluvium, or talus deposits.  On valley floors also includes small fans, bogs, and modern stream alluvium.  Areas of thin, sparse drift not distinguished from bedrock.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qgu
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Glacial deposits: Glacial deposits, undivided (Holocene and Pleistocene)-Mostly morainal deposits or vegetated talus deposits similar to unit Qag or Qt, but includes outwash.  May include considerable debris deposited from the Cordilleran ice sheet, especially in the North Fork of the Nooksack River and along Ross Lake.  As mapped, includes deposits in part belonging to units Qyal, Qf, and Qmw.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qvr
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Glacial deposits: Deposits of the Vashon stade of the Fraser glaciation of Armstrong and others (1965) (Pleistocene): Recessional outwash deposits-Stratified sand and gravel, moderately sorted to well-sorted, and well-bedded silty sand to silty clay.  This deposit formed predominantly in outwash plain and valley train environments in the lowland areas.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qvt
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Glacial deposits: Deposits of the Vashon stade of the Fraser glaciation of Armstrong and others (1965) (Pleistocene): Till-Mainly compact diamicton with subangular to rounded clasts, glacially transported and deposited.  In ice-marginal areas or where covered by a thin layer of recessional outwash, contact with unit Qvr is gradational.  As mapped, also includes deposits of units Qf, Qmw, and Qyal too poorly exposed or too small to show at map scale.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qva
          Enumerated_Domain_Value_Definition: SURFICIAL DEPOSITS: Glacial deposits: Deposits of the Vashon stade of the Fraser glaciation of Armstrong and others (1965) (Pleistocene): Advance outwash deposits-Well-bedded gravelly sand, fine-grained sand, and bedded silt, generally firm and unoxidized; deposited by proglacial streams and in proglacial lakes.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qpf
          Enumerated_Domain_Value_Definition: Non-glacial and glacial deposits: Non-glacial and glacial sedimentary deposits older than Fraser Glaciation (Pleistocene)-Moderately to deeply weathered, moderately sorted sand with volcanic clasts.  Exposed only in the western part of the quadrangle along the south boundary.

        Enumerated_Domain:
          Enumerated_Domain_Value: Qbsc
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Basalt of Sulphur Creek (Holocene) - Plagioclase-rich olivine-pyroxene basalt to andesite lava flows and scoria cone produced by a monogenetic eruption near the head of Sulphur Creek in the early Holocene.  Lava complex dominantly basaltic but consists of basaltic andesite medially and andesite proximally, zoned 51-59% SiO2.  Lavas flowed 12 km eastward to Baker River, where a remnant survives on the east shore of Baker Lake.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbscc
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Basalt of Sulphur Creek (Holocene) - Scoria cone of Qbsc (shown with pattern on published map)
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbv
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of present-day Mount Baker stratovolcano (Holocene and late Pleistocene) - Plagioclase-rich pyroxene andesite (56-63% SiO2; mostly olivine-bearing) lava flows and flow breccia with subordinate agglutinate, scoria, and pyroclastic-flow deposits - all erupted from the central vent of the modern stratovolcano.  Consists dominantly of about 200 lava flows, nearly all emplaced radially and sector-confined.  About 25 flows exposed between elevations of 2,500 m and 3,200 m make up the steep ridge west of the summit of Mount Baker.  Debris flows derived from the cone have moved far down Park, Boulder, Sandy, Sulphur, Rocky, Bar, and Glacier  Creeks and the Middle Fork of the Nooksack River, but deposits have largely been reworked as alluvium or till.  Unit includes andesite lava remnants along Kulshan, Heliotrope, and Glacier Creeks.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbm
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Miscellaneous lava-flow remnants (Pleistocene) - Isolated andesite and dacite lava flows largely removed by erosion; source vents unknown but presumed  to have erupted in the Kulshan caldera-Mount Baker area in postcaldera time.  Includes:  (1) reversely magnetized, olivine-pyroxene andesite lava-flow (55.5% SiO2) remnant in upper Thompson Creek, K-Ar dated at 878  18 ka; (2) reversely magnetized, undated, olivine-bearing pyroxene andesite lava-flow (60% SiO2) remnant on southwest slope of Lookout Mountain, K-Ar dated at 859  14 ka; (3) undated, hornblende-pyroxene-plagioclase andesite (59% SiO2) lava-flow remnant on lower north slope of Slate Mountain, 400 m east of Anderson Creek, about 370 m above the modern valley floor; and (4) undated plagioclase-rich hornblende-pyroxene andesite (57.5% SiO2) dike cutting south slope of Mount Herman (at 1,525 m elevation; but too small to show at map scale); and (5) rhyodacite lava-flow remnant on distal nose of Boulder Ridge, north of Boulder Creek, K-Ar dated at 1995 ka.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbsw
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Swift Creek (late Pleistocene)- Plagioclase-rich olivine-pyroxene basaltic andesite (54-56% SiO2); isolated eroded remnants of lava flows along the floor of Swift Creek or banked against its east wall as high as 110 m above the floor.  Vent unknown, probably farther north within Swift Creek drainage.  Yields K-Ar determined age of 4818 ka.  Lava flows were emplaced after downcutting of Swift Creek gorge to approximately its present depth.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbtp
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of The Portals (late Pleistocene) - Pyroxene andesite lava flows (57-62% SiO2) distinguished by abundant small (<1 mm) plagioclase, erupted from a glacially eroded vent exposed on east face of Landes Cleaver (east of Mazama Glacier).  A few thick flows form a proximal stack still more than 500 m thick and an intracanyon tongue more than 200 m thick that caps the divide between Sholes and Bar Creeks.  Most exposures are glassy and polygonally jointed, owing to ice-contact emplacement. Different flows yield K-Ar ages of 767 ka and 407 ka
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbls
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Basalt of Lake Shannon (late Pleistocene) - Plagioclase-olivine basalt (51-52% SiO2), hyaloclastite tuff and thin lava flows, making up two glaciated knobs and a roadcut remnant 1-2 km west of upper Lake Shannon.  Poorly sorted and poorly stratified deposit, as thick as 150 m.  Vesicular fragments 1-15 cm make up only 5-10% of glassy deposit dominated by sand-and silt-sized particles, which are locally palagonitized and indurated.  Intercalated lava tongues, probably spatter-fed, are 1-3 m thick; one gave an age of 94_21 ka.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbcd
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Cougar Divide (middle Pleistocene) - Plagioclase-rich pyroxene andesite and olivine-pyroxene andesite lava flows (56-63% SiO2) capping the northern part of Cougar Divide and forming smaller remnants near upper Dobbs Creek.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbpc
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Park Creek (late Pleistocene) - Stack of five pyroxene andesite lava flows (57-61% SiO2) on south wall of Park Creek.  Source vent concealed beneath modern Mount Baker.  Middle flow gives K-Ar age of 14055 ka
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbpl
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Pinus Lake (middle Pleistocene) - Plagioclase-rich pyroxene andesite (59-62% SiO2; sparse olivine) intracanyon lava flow, surviving only as a 1-km2 remnant 100 m thick, 1-2 km east of the confluence of Wells Creek with the North Fork of the Nooksack River.  Base of flow 120 m above present-day river.  Not distinguished separately on map is a second intracanyon flow remnant of glassy hornblende dacite (65% SiO2) that supports a 60-m cliff below the northwest face of the andesite.  Another remnant of yet a third intracanyon flow is present 1.5 km farther west; consisting of olivine-pyroxene andesite (59% SiO2), its base is 225 m above the river junction.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbbb
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Black Buttes (middle Pleistocene) - Olivine-pyroxene andesite (mostly 55-59% SiO2) lava flows, flow breccia, and near-vent fragmental deposits (pattern) of Black Buttes stratovolcano.  Plagioclase small and sparse in the dominant mafic lavas and ejecta but abundant in thicker flows of silicic andesite.  Unit also includes sparse thin flows of olivine-plagioclase basalt (52% SiO2).  A fragmental vent complex interfingers radially with thick stacks of thin (1-15 m) proximal flows and flow-breccia. The fragmental core, extensively altered by fumarolic-hydrothermal fluids, has been glacially gutted to provide the west cirque of Deming Glacier.  A few much thicker lava flows of pyroxene andesite (59-64% SiO2) extend outward from the edifice, today supporting several high divides.  Separate vents active during Black Buttes time include Forest Divide (Unit Qbfd), lava Divide (unit Qbid), and Lasiocarpa Ridge (unit Qbir).
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbcp
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Coleman Pinnacle (middle Pleistocene) - Hornblende-plagioclase andesite (59-63% SiO2; pyroxene sparse to absent) lava flows and dikes, capping much of Ptarmigan Ridge.  Erupted from dike-fed fissure system that extends more than 2 km northeasterly along Ptarmigan Ridge.  Glacially sculptured remnants are as thick as 200 m.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbtm
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Table Mountain (middle Pleistocene) - Plagioclase-rich pyroxene andesite lava flows (59-62.5% SiO2) that form stacks as thick as 150 m at Table Mountain [17] and 250 m at nearby Kulshan Ridge.  Glacially scoured remnants, mostly glassy and polygonally jointed, make up much of the surface in the Heather Meadows ski area.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbld
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Lava Divide (middle Pleistocene) - Plagioclase-rich pyroxene andesite (58-63% SiO2) lava flows, chaotic and stratified breccias, and vent-filling intrusion.  Some flows olivine bearing.  Vent plug is conical peak, fumarolically altered and laced with sulfides, forming western prow of cleaver between Park and Rainbow Glaciers.  Most lavas bracketed between 460 and 296 ka, but a basal flow on Park Creek gives 743_72 ka.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbbr
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Bastille Ridge (middle Pleistocene) - Plagioclase-rich pyroxene andesite (59-63% SiO2) lavas that form a 200-m stack of about10 west-dipping flows that cap Bastille Ridge.  Remnant of a single 60-m-thick flow about1 km northwest (on north side of Smith Creek) is similar, probably related.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbfd
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Forest Divide (middle Pleistocene)-Olivene-bearing pyroxene andesite (58-61% SiO2). Stack of about 10 lava flows capping Forest Divide.  Vent buried by Mount Baker.  Basal and top flows yield K-Ar ages of 455_9 ka and 366_10 ka.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qblr
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Lasiocarpa Ridge (middle Pleistocene) - Plagioclase-rich olivine-pyroxene andesite (58-62% SiO2) lava flows and thick flow breccia. K-Ar dated at 5158 ka.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qbpb
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Basalt of Park Butte (and associated rocks) (middle Pleistocene) -Plagioclase-olivine basalt (50% SiO2) lava flow capping east ridge of Park Butte; yields K-Ar age of 71645 ka.  Nearby remnants of basaltic andesite lavas  (52.5-56% SiO2; mapped as Qbm) containing clinopyroxene as well as olivine and plagioclase, cap Cathedral Crag, the ridge north of Baker Pass, and the small plateau just east of Park Butte.  These yield K-Ar ages between 333 and 203 Ka and have no recognizable source vent.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qkrl
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of Kulshan caldera (early Pleistocene): Rhyodacite lava flows, domes, dikes and shallow intrusions - At least seven separate eruptive units of biotite-hypersthene-hornblende-plagioclase rhyodacite (69-72% SiO2) intrude and overlie intracaldera ignimbrite or sedimentary deposits.  Five more intrude and overlie unit KJna on Cougar Divide (where three are shown on the geologic map), and at least one dike (30 m thick, but not shown on the map) of similar rhyodacite cuts unit Pcmv on the divide between Swift and Rainbow  Creeks just south of the caldera.  
Compositionally, the lavas and dikes are similar to the dominant pumice in the ignimbrite or slightly less evolved.  Phenocryst contents range widely, from 5 to 25%.  Like the ignimbrite, the lavas and dikes contain plagioclase, hypersthene, hornblende, biotite, FeTi oxides, apatite, and zircon, although one or more of these may be missing in some flows; sanidine is lacking, and clinopyroxene and quartz are absent or very rare.  Lithologically, the lavas and dikes are massive or flow-banded felsite; glacial erosion has stripped all but sparse remnants of glassy external zones, which tend to be altered where they survive.  The felsite is pale to medium grey where fresh but is largely tan to orange-brown owing to pervasive oxidation and ferruginous films on joints and vugs.  In areas of hydrothermal alteration, especially where brecciated, the lavas are pale green, cream, or white, commonly stained and streaked ochre to rusty brown due to decomposition of disseminated pyrite.
        Enumerated_Domain:
          Enumerated_Domain_Value: unit Qkls
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of Kulshan caldera (early Pleistocene): Caldera-lake sedimentary deposits - Laminated to thin-bedded ashy mudstone, ash-dominated debris-flow deposits, and intercalated sheets of rockfall breccia.  Ashy sediments that originally consisted predominantly of vitric shards are mostly well-lithified and rich in calcite, clays, and pyrite.  Colors range from pale grey or tan to black, or, where altered, ochre to rusty brown.  Debris-flow deposits are diamictic massive or graded beds 0.1-7 m thick, containing pumice, caldera-wall lithics, and mudstone intraclasts in an ashy matrix.  Sheets of lithic breccia, poor in ash, 0.1-5 m thick, largely made up of angular clasts of argillite, sandstone, and conglomerate, alternate with ash-rich laminated mudstone.  Unit has been widely stripped by erosion.  Surviving sections dip gently toward middle of caldera or are locally disrupted by intrusive rhyodacite and andesite.
        Enumerated_Domain:
          Enumerated_Domain_Value:Qkig
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of Kulshan caldera (early Pleistocene): Ignimbrite of Swift Creek - Intracaldera rhyodacite ignimbrite (ash-flow tuff) filling Kulshan caldera.  Mostly massive, but crudely stratified in top 100 m and near walls where myriad sheets of wall-collapse breccia are intercalated.  Largely nonwelded but firmly indurated by groundwater and hydrothermal fluids.  White to pale grey except where hydrothermally altered ochre to orange-brown.  Pumice clasts are rarely larger than 10 cm and mostly smaller than 2 cm; nearly all are rhyodacite (72% SiO2) containing 10-15 wt % phenocrysts (plagioclase >> hypersthene _ hornblende > biotite > FeTi oxides > rounded quartz > apatite _ zircon).  Andesitic pumice is also present but very sparse.  Ignimbrite matrix is crystal-enriched (relative to pumice) and is poor in lithic fragments except near walls, where they are abundant.  In addition to feeders for the postcaldera rhyodacite lavas (unit Qkrl), the ignimbrite is cut by at least 60 andesitic dikes and irregular intrusions, none of which are known to extend out of the caldera into surrounding wall rocks.

        Enumerated_Domain:
          Enumerated_Domain_Value: Qkmba
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of Kulshan caldera (early Pleistocene): Caldera-collapse megablocks - Partly shattered and sheared but quasi-coherent 0.1-to-1-km slide blocks of caldera-wall rock (unit Tcla) surrounded by intracaldera ignimbrite.  Examples shown on printed map are labeled QKmb.
        Enumerated_Domain:
          Enumerated_Domain_Value: Qkmbn
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Rocks of Kulshan caldera (early Pleistocene): Caldera-collapse megablocks - Partly shattered and sheared but quasi-coherent 0.1-to-1-km slide blocks of caldera-wall rock (unit KJna) surrounded by intracaldera ignimbrite.  Examples shown on printed map are labeled QKmb.
        Enumerated_Domain:
          Enumerated_Domain_Value: Thb
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Hannegan Volcanics (Pliocene): Volcanic breccia-Mostly clinopyroxene-hornblende andesite clasts along with many clasts of older rocks in andesite tuff matrix.  Many andesite dikes, sills and (or) flows.
        Enumerated_Domain:
          Enumerated_Domain_Value: Thmb
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Hannegan Volcanics (Pliocene): Monolithologic breccia-Angular debris of older rocks, probably talus, and (or) debris-flow deposits.  Mapped on north side of Ruth Mountain and above Sulphide Creek. The latter occurrence includes volcanic breccia, is outside the caldera, and may be of different origin.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tht
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Hannegan Volcanics (Pliocene): Tuff-White to light-brown dacite tuff and welded tuff, some rhyolite tuff, and rare andesite tuff and flow rocks, commonly highly altered.  Bedding obscure.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tvr
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Other volcanic rocks: Volcanic rocks of Mount Rahm (Oligocene)-Dacitic to less commonly andesitic breccias, tuffs, and flows with some feldspathic sandstone and conglomerate interbeds.  Welded dacite tuff common.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tvbb
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Other volcanic rocks: Volcanic rocks of Big Bosom Buttes (Oligocene): Breccia-Predominantly dacite breccia; minor tuff beds.  Forms massive cliffs.  Scattered clasts of older rocks, including light-colored granitic rocks.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tvbd
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Other volcanic rocks: Volcanic rocks of Big Bosom Buttes (Oligocene): Dacite tuff-Biotite dacite tuff, commonly ash-flow tuff and bedded fine-grained tuff.  Also includes dacite on Middle Peak.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tvbm
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Other volcanic rocks: Volcanic rocks of Big Bosom Buttes (Oligocene): Monolithologic granite breccia-Angular blocks of biotite granite from a few cm to several meters across in a granitic sand matrix.  Scattered volcanic fragments.  Derived from granite of Pocket Peak phase (unit Tcp).
        Enumerated_Domain:
          Enumerated_Domain_Value: Tvpd
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Volcanic rocks of Pioneer Ridge (Oligocene): Dacite flows-Plagioclase- and quartz-phyric dacite.  Mafic minerals altered to smectites.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tvpb
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: Volcanic rocks of Pioneer Ridge (Oligocene): Mudflow breccia-Clasts of dacitic volcanic rocks and abundant clasts of underlying metamorphic rocks.  Also includes volcanic-lithic sandstone.  Locally strongly thermally metamorphosed.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tdt
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Tonalite of Cascade Pass dike (Miocene)-Medium-grained hornblende-biotite tonalite, hypidiomorphic granular with small glomeroporphyrocrysts of mafic minerals.  CI = 7-26 (Tabor, 1961, p. 175; Ford and others, 1988, p. 34), mostly CI=15-17.  Massive and coarsely jointed, with local areas of disseminated sulfide minerals.  The dike has finer-grained, porphyritic, chilled margins; contact lit-par-lit complexes are common, and alteration is locally pervasive.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcla
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Lake Ann stock (Pliocene)-Medium-grained hypersthene-clinopyroxene quartz monzodiorite and quartz monzonite, locally with biotite and very minor hornblende.  Normatively some is granodiorite; CI=12_19 (James, 1980). Euhedral biotite common near roof above Lake Ann.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcmi
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Miscellaneous granodiorite intrusions (Pliocene and/or Miocene)-Biotite granodiorite, micrographic, commonly altered, with much chlorite.  As mapped comprises lithologically-similar stocks cropping out on the north side of Hagan Mountain, in Sulphide Creek, and upper Noisy Creek.  Also includes fine-grained biotite pyroxene amphibole granodiorite stock on Bar Creek, which may be as young as middle Pleistocene (Hildreth and others, 2003).
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcnm
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Quartz monzonite and granite of Nooksack cirque (Pliocene)-Quartz monzonite and  granite with minor granodiorite and quarzt monzodiorite.  Predominantly with uralitic hornblende and relict clinopyroxene.  CI=7-15.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcrg
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Granite of Ruth Mountain (Pliocene)-Biotite granite and granodiorite, commonly with large twinned perthite crystals.  Minor hornblende.  CI=4-17.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcid
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Quartz diorite and quartz monzodiorite of Icy Peak (Pliocene)-Biotite-clinopyroxene quartz diorite to quartz monzodiorite with minor hypersthene and uralite.  Some rock is plagioclase-porphyritic.  CI=15-32.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcgp
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Granite porphyry of Egg Lake (Pliocene)-Hornblende and biotite granite and granodiorite porphyry with phenocrysts of quartz, plagioclase, and hornblende in a xenomorphic matrix of K-feldspar, quartz, and plagioclase.  Compositionally heterogeneous and commonly altered.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcrgd
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Ruth Creek pluton (Miocene)-Biotite granodiorite, some granite and quartz monzodiorite, locally with quartz eyes as large as 1 cm in diameter; CI=3-7 (Tepper, 1991, p. 78), but mostly 4-5.  Rare blocky hornblende with pyroxene cores.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcm
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Mineral Mountain pluton (Miocene)-Biotite granite.  CI=3-7.  Characterized by conspicuous quartz eyes several centimeters across which are glomerocrysts of rounded quartz grains with K-feldspar in the curved triangular interstices.  Micrographic integrowths of K-feldspar and quartz common.  Conspicuous chloritic alteration.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcwb
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Granite of western Bear Mountain (Miocene?)-Biotite granite and granodiorite, some with hornblende.  Rock is heterogeneous; CI=2-12.  Quartz eyes conspicuous.  Rock is cut by numerous aplitic dikes (Tepper, 1991, p. 79).
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcdcg
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Granite of Depot Creek (Miocene)-Biotite-hornblende granite with relict clinopyroxene cores in hornblende.  Forms a small stock below the Redoubt Glacier.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcrq
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Quartz monzodiorite of Redoubt Creek (Miocene)-Biotite-pyroxene-hornblende quartz monzodiorite, quartz monzonite, granite, granodiorite, and diorite, commonly altered, with pinkish cast.  CI=3-20, but most CI=11-17.  Some rocks are porphyritic allotriomorphic and vermicular; micrographic quartz is common (Tepper, 1991, p. 68).
        Enumerated_Domain:
          Enumerated_Domain_Value:Tcbx
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Intrusive breccia (Miocene and/or Oligocene)-On north ridge of Mount Blum, unit consists of alaskite and other intermediate plutonic rocks mixed with hypabyssal rocks in altered porphyroclastic xenomorphic and cataclastic matrix of rhyolitic composition; rocks are thermally metamorphosed.  Breccia is cut by or marginal to a variety of silicic dike rocks.  Above Luna Lake, gneiss, hypabyssal dike rocks, mafic schist, and country rock gneiss clasts with vuggy quartz, pyrite, and radial amphibole bursts.  Near Tapto Lakes, mafic plutonic-rock clasts, such as diorite, are mixed with andesite clasts in an altered dacitic matrix (Moore, 1972, p. 49-50).
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcsg
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Mount Sefrit Gabbronorite of Tepper and others (1993) (Miocene)-Mostly olivine-bearing gabbronorite with minor two-pyroxene diorite, hornblende diorite, and quartz diorite.  Rocks are dark, partly because of swarms of minute dark inclusions in calcic plagioclase (Tepper, 1985).
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcpc
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Perry Creek phase (Miocene and Oligocene)-Mostly biotite-hornblende tonalite and granodiorite, commonly with relict clinopyroxene.  Minor quartz monzodiorite and quartz diorite.  Hornblende or biotite may predominate.  Quartz is typically mesostasic.  CI=8-22, but most are CI=12-19.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcpct
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Perry Creek phase (Miocene and Oligocene)-Mostly biotite-hornblende tonalite and granodiorite, commonly with relict clinopyroxene.  Minor quartz monzodiorite and quartz diorite.  Hornblende or biotite may predominate.  Quartz is typically mesostasic.  CI=8-22, but most are CI=12-19: Tectonized tonalite -Shattered and locally cataclastic to mylonitic, highly altered tonalite and granodiorite; mafic minerals chloritized.  Also includes hornfels and shattered and recrystallized plutonic and hypabyssal rocks, with biotite, amphibole, plagioclase and quartz mosaics.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcbg
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Biotite granodiorite of Little Beaver Creek (Oligocene)-Mostly hornblende-biotite granodiorite and minor granite, locally quartz and plagioclase phyric; CI=3-10.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tccv
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Chilliwack valley phase (Oligocene)-Biotite-hornblende tonalite, granodiorite, and minor quartz diorite, commonly with subhedral plagioclase prisms in quartz mesostasis.  Minor clinopyroxene; locally.  CI=7-30, but mostly CI=15-20.  As mapped, probably includes several plutons.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tccvt
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Chilliwack valley phase (Oligocene)- Dark tonalite-Pyroxene-hornblende tonalite with distinctive dark vitreous appearance in outcrop.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcig
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Indian Mountain phase (Oligocene)-Biotite-hornblende granodiorite and granite, with minor quartz monzonite and quartz monzodiorite.  CI=3-19, most CI=12-19.  Texturally heterogeneous, some quartz or K-feldspar pheoncrystic but these minerals are generally mesostasic; locally granophyric.  Rock is commonly pinkish and with chloritized hornblende and biotite.  As mapped, probably includes several plutons.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcbr
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Baker River phase (Oligocene)-Mostly biotite hornblende granodiorite with some tonalite and quartz diorite, locally with clinopyroxene and hypersthene.  Subhedral plagioclase in quartz mesostasis common.  CI=7-25, but for most rocks in southern part CI=13-18 and, in Skagit Range, CI=17-20.  Mostly tonalite, quartz diorite, and rare diorite in Skagit Range and in small pluton on American Border Peak; some diorite is hornfelsic.  As mapped, probably includes several plutons.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcbrp
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Price Glacier pluton-Biotite-hornblende quartz diorite with mesostasic quartz.  CI=16-18.  Tepper (1991) describes some of the rock making up this unit as part of his granodiorite of Ruth Mountain.  Specific age uncertain.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcml
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Tonalite of Maiden Lake-Biotite-hornblende metatonalite and metaquartz diorite with highly altered plagioclase and biotite.  Hypidiomorphic granular.  Metamorphic minerals are chlorite, epidote, prehnite, pumpellyite, sericite and carbonate.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcsp
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Silesia Creek pluton (Oligocene)-Biotite-hornblende granodiorite, quartz monzodiorite and quartz diorite with inclusions and layers of biotite granodiorite and granite; some granitic xenoliths as long as 200 m.  CI=5-20.  Quartz diorite displays prominent magmatic alignment of feldspar and mafic minerals.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcba
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Biotite alaskite of Mount Blum (Oligocene)-Medium-grained biotite alaskite (granite) with prominent perthite prisms, rare hornblende, locally quartz phyric.  CI=1-4
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcp
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Pocket Peak phase (Oligocene)-Biotite granite.  Medium grained, hypidiomorphic granular.  Commonly with quartz eyes, which are glomerocrysts of rounded quartz grains with K-feldspar in the curved triangular interstices.  CI=1-5 mostly CI=3-5.  As mapped, probably includes several plutons.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcht
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Heterogeneous tonalite and granodiorite of Middle Peak (Oligocene?)-Quartz diorite to biotite granite, mostly mafic-poor.  Many rocks hornfelsic.  Also includes amphibolite of unknown origin.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcdg
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Granodiorite of Mount Despair (Oligocene)-Biotite-hornblende granodiorite with minor tonalite, quartz diorite, and quartz monzodiorite.  Conspicuous quartz eyes which are glomerocrysts of rounded quartz grains with K-feldspar in the curved triangular interstices.  CI=7-20, but mostly CI=10-12; hornblende usually predominates.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcdga
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Granodiorite of Mount Despair (Oligocene)- Agmatite-Swarms of dark rounded inclusions from 0,25m to several meters across composed of mafic biotite-hornblende quartz diorite and fine-grained tonalite in a lighter colored granodiorite and tonalite matrix.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcmg
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Miscellaneous gabbros and diorites (Oligocene?)-Pyroxene-hornblende gabbro, diorite, and quartz diorite.  Rocks contain much uralite.  Mafic hornblende gabbro near Mount Spickard is mixed with granitic rocks  A small body of pyroxene gabbro at Chilliwack Pass is not shown on the map.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcmge
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Miscellaneous gabbros and diorites (Oligocene?)- Inclusion-rich diorite of Ensawkwatch Creek-Layered hypersthene hornfels inclusions in diorite and quartz diorite.  East of Pocket Peak.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tcclg
          Enumerated_Domain_Value_Definition: ROCKS OF THE CASCADE MAGMATIC ARC: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Gabbro of Copper Lake (Oligocene)-Oikocrystic hornblende gabbro surrounded by equigranular hornblende diorite.  Some pyroxene in the diorite which is also zoned to quartz and biotite-bearing varieties.  CI=25_40.  Cumulous textures throughout.  Description adopted from Tepper (1991, p. 20-27).
        Enumerated_Domain:
          Enumerated_Domain_Value: Tc
          Enumerated_Domain_Value_Definition: LATE OROGENIC  AND POST OROGENIC DEPOSITS: Chuckanut Formation (Eocene)-Mostly fluvial, plagioclase arkose, biotite-rich with minor muscovite, buff-weathering, medium- to thick-bedded, and minor interbeds of siltstone, mudstone, and very fine grained sandstone.  Also includes minor pebble to cobble conglomerate.  Conspicuous crossbeds, convolute bedding, and plant fossils.  Sandstone is locally thinner bedded and more lithic.  Ochre-colored silty beds near base of unit may be paleosols.  Basal beds, where exposed, commonly include bull-quartz pebble conglomerate which appears to have been derived from the underlying Easton Metamorphic Suite.
        Enumerated_Domain:
          Enumerated_Domain_Value:Tys
          Enumerated_Domain_Value_Definition: LATE OROGENIC  AND POST OROGENIC DEPOSITS: Younger sandstone and conglomerate (middle Eocene or younger)-West of lower Bacon Creek, mostly coarse cobble conglomerate with clasts derived from the Marblemount pluton.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tos
          Enumerated_Domain_Value_Definition: LATE OROGENIC  AND POST OROGENIC DEPOSITS: Older sandstone and conglomerate (age uncertain)-Thick- to thin-bedded fluviatile arkosic sandstone and interbedded argillite, siltstone, and very fine grained sandstone.  Locally has conspicuous crossbeds, fossil leaves, and fossil logs.  Basal beds commonly rich in angular fragments derived from underlying rocks.  Southeast of Berdeen Lake, unit includes conglomerate with clasts of granitic rock, geenstone, gneiss, schist, phyllite, abundant well-rounded cobbles of quartzite, and minor sandstone and limestone.  On Mount Despair, unit includes pebble to cobble conglomerate with clasts of gneiss, metachert, and minor pegmatite; intruded by granodiorite of Mount Despair, indicating unit age here is early Oligocene or older.  Converted to biotite hornfels, commonly with cordierite and (or) andalusite, in proximity to younger plutons.
        Enumerated_Domain:
          Enumerated_Domain_Value: bc
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Conglomerate of Bald Mountain  (Age uncertain)-Coarse polymictic conglomerate, chert-pebble conglomerate, grey lithic sandstone, and phyllitic black to silvery argillite.  Polymictic conglomerate includes clasts of chert, argillite, green metatonalite, dacite, buff-weathering calcite-cemented quartzose sandstone, and rare bedded lithic sandstone.  Clast-supported, pebbles and boulders well rounded.  Clasts in conglomerates locally flattened and boudinaged.  Rare siltstone and shale interbeds.  East of Goat Mountain unit contains abundant fossil plant material.
        Enumerated_Domain:
          Enumerated_Domain_Value:bcs
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Conglomerate of Bald Mountain  (Age uncertain)-Sandstone and argillite-Highly indurated, thin- to medium-bedded sandstone; beds generally disrupted.  Sandstone poorly sorted, rich in chert clasts.  Black argillite, flaky to slaty.  Minor chert-pebble conglomerate beds.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kjb
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Bell Pass mlange, undivided-Disrupted argillite, slate, phyllite, sandstone, semischist, ribbon chert, and basalt of the Elbow Lake Formation of Brown and others (1987), with tectonic blocks of meta-igneous rocks, gneiss, schist, ultramafic rocks, and marble.  Sandstone commonly lithic subquartzose, either volcanic rich and(or) chert rich; argillite is mostly scaly, and grades into slate and phyllite.  Greenstones are recrystallized basalt, mafic tuff, diabase, and gabbro and commonly make the most prominent outcrops.  Metamorphic minerals in greenstones and metasedimentary rocks are chlorite, epidote, albite, pumpellyite, rare actinolite, carbonate minerals, and indistinct masses of pumpellyite and(or) lawsonite.
        Enumerated_Domain:
          Enumerated_Domain_Value: bb
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Blueschist of Baker Lake (Cretaceous to Jurassic metamorphic age)-Metabasaltic rocks, meta-ribbon chert, and marble, characterized by distinctive (for the Northwest Cascades System) high-pressure/low-temperature crossite, lawsonite, some aragonite metamorphism.  Metabasaltic rocks range from very fine grained schistose metatuff to incipiently recrystallized basalt.
        Enumerated_Domain:
          Enumerated_Domain_Value: byan
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Yellow Aster Complex of Misch (1966) (Paleozoic protolith age)- Non-gneissic rocks-Predominantly  massive metagabbro, metadiabase, metatonalite; locally includes minor gneissic igneous rocks.  May include late Paleozoic or Mesozoic intrusive rocks similar to units MzPzg and MzPzt.
        Enumerated_Domain:
          Enumerated_Domain_Value: byag
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Yellow Aster Complex of Misch (1966) (Paleozoic protolith age)- Gneissic rocks-Layered siliceous gneiss, quartz-rich pyroxene gneiss, gneissic megacrystic granite, and minor marble, as well as associated metagabbro, metadiabase, and metatonalite.  Gneissic granite with K-feldspar megacrysts known only from Kidney Creek.  Includes areas lacking siliceous gneiss, but with strongly mylonitic quartz-rich meta-igneous rocks.  Talus blocks east of Park Butte  grade from graphitic marble to quartz-rich pyroxene gneiss.  Most rocks are highly strained and recrystallized in amphibolite or upper-greenschist facies.  Locally, intruded by associated metagabbro, metadiabase, and metatonalite.
        Enumerated_Domain:
          Enumerated_Domain_Value: bu
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Yellow Aster Complex of Misch (1966) (Paleozoic protolith age): Ultramafic rocks-Serpentinite and partially serpentinized dunite and harzburgite.
        Enumerated_Domain:
          Enumerated_Domain_Value: but
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Yellow Aster Complex of Misch (1966) (Paleozoic protolith age): Ultramafic rocks: Twin Sisters Dunite of Ragan (1961; 1963)-Dunite and harzburgite, locally serpentinized.
        Enumerated_Domain:
          Enumerated_Domain_Value: bup
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Ultramafic rocks: Pyroxenite-Massive pyroxenite consisting of mostly enstatite and minor olivine and serpentine minerals.
        Enumerated_Domain:
          Enumerated_Domain_Value: bv
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Vedder Complex of Armstrong and others (1983) (Permian metamorphic age)-Amphibolite, blueschist, micaceous quartzite, and mica-quartz schist.  Some garnet.  Amphiboles are hornblende, actinolite, and barroisite.  Some amphibolites contain albite porphyroblasts.
        Enumerated_Domain:
          Enumerated_Domain_Value: bm
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Marble-Coarsely crystalline marble.  Outcrops near Anderson Creek.
        Enumerated_Domain:
          Enumerated_Domain_Value: KJrs
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Slate of Rinker Ridge (Cretaceous to Late Jurassic)-Slate and semischist similar to the semischist of Mount Josephine, but less thoroughly recrystallized.  Metamorphic minerals are chlorite and sericite.  Exposed only in lower Skagit River valley.
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPzg
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Gabbroic intrusions (Mesozoic and Paleozoic)-Metagabbro, metadiabase, and minor mafic metatonalite.  Generally highly cataclastically deformed and altered to chlorite, epidote, albite, pumpellyite, and carbonate minerals.  Many rocks with very fine grained high-relief minerals replacing plagioclase, probably pumpellyite and (or) lawsonite.
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPzt
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Tonalitic intrusions (Mesozoic and Paleozoic)-Metatonalite, commonly strongly cataclastically deformed.  Metatonalite in the Cultus Formation of Daly (1912) consists of albitic plagioclase and quartz, commonly in micrographic intergrowths, with less than10% chlorite, epidote, and opaque ore minerals, which have replaced hornblende and (or) biotite.
.
        Enumerated_Domain:
          Enumerated_Domain_Value: MxPzcc
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Chilliwack Group of Cairnes (1944) and Cultus Formation of Brown and others (1987) undivided (Mesozoic and Paleozoic).
.
        Enumerated_Domain:
          Enumerated_Domain_Value: JTrc
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Cultus Formation of Brown and others (1987) (Early Jurassic and Late Triassic)-Tuffaceous siltstone, sandstone, and argillite, mostly thin bedded to finely laminated.  Also includes much rhythmite.  Medium-bedded sandstone on Loomis Mountain.
        Enumerated_Domain:
          Enumerated_Domain_Value: JTrcd
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Cultus Formation of Brown and others (1987) (Early Jurassic and Late Triassic): Dacite and associated tuffaceous sedimentary rocks-Generally light green vitreous metadacite with microphyric plagioclase.
        Enumerated_Domain:
          Enumerated_Domain_Value: PDc
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian)-Mostly well bedded gray to brown and black argillite and volcanic subquartzose sandstone with minor pebble conglomerate, marble,  and rare chert.  Also basalt, andesite, dacite, volcanic breccia, and tuff.  In sedimentary rocks, graded beds, scour structures, and load casts locally prominent; also includes some rhythmite.  Locally sandstone beds strongly disrupted in argillite matrix.  Rocks grade rapidly from little-deformed to phyllitic with a pronounced foliation generally subparallel to bedding.  Most rocks partially recrystallized in sub-greenschist facies.
        Enumerated_Domain:
          Enumerated_Domain_Value: Pcmv
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Volcanic rocks of Mount Herman (Permian)-Breccia, pillows, pillow breccia, and associated volcanic sandstone of basalt or basaltic andesite composition.  Most volcanic rocks are plagioclase-phyric, some are amygdaloidal.  Unit weathers orange-brown; dark- to light-green on fresh surfaces.
        Enumerated_Domain:
          Enumerated_Domain_Value: Pcms
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Sedimentary rocks of Mount Herman (Permian)-Volcanic sandstone, siliceous siltstone, argillite, and limestone.  Generally well bedded and with little foliation.
        Enumerated_Domain:
          Enumerated_Domain_Value: PDcv
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Volcanic rocks (Permian, Carboniferous, and Devonian)-Mostly basaltic greenstone, with subordinate andesite and rare dacite or rhyolite.  Breccia and tuff predominate.  Mafic volcanic rocks commonly with relict plagioclase and clinopyroxene in a chlorite-epidote matrix, commonly with carbonate minerals.  Plagioclase is mostly recrystallized as albite.  Also includes some gabbro and diabase.
        Enumerated_Domain:
          Enumerated_Domain_Value: PDcl
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Welker Peak and Excelsior nappes: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Limestone and marble (Permian, Carboniferous, and Devonian)-Mostly coarsely crystalline, gray to black, and petroliferous limestone and marble;  occurs in small isolated pods and blocks; locally fossiliferous.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kg
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Rocks of the Autochthon: Gabbroic intrusions (Early Cretaceous?)-Metagabbro with relict clinopyroxene.  Altered to chlorite, epidote, albite, carbonate minerals, and montmorillonoids after olivine(?).  Intrudes  the Nooksack Formation at the toe of the Roosevelt Glacier.  Lithologically similar dikes (unmapped) form swarm southeast of intrusion.
        Enumerated_Domain:
          Enumerated_Domain_Value: KJna
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Rocks of the Autochthon: Nooksack Formation (Early Cretaceous to Middle Jurassic)-Described here as sedimentary rocks, although much of the unit is incipiently recrystallized (Brown and others, 1981, 1987): Argillite and sandstone-Predominantly massive to laminated black argillite.  Locally with thin to medium beds of mostly lithic-volcanic sandstone.  Also includes minor limy siltstone and limestone.  Some beds heavily bioturbated.  Local detrital muscovite.  Cleavage weakly developed north of Mount Baker, but pronounced to south.  Argillite near top of the Wells Creek Volcanic Member rich in pyrogenic plagioclase and quartz phenocrysts.  Belemnite molds characteristic.
        Enumerated_Domain:
          Enumerated_Domain_Value: KJnt
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Rocks of the Autochthon: Nooksack Formation (Early Cretaceous to Middle Jurassic)-Described here as sedimentary rocks, although much of the unit is incipiently recrystallized (Brown and others, 1981, 1987): Thick-bedded sandstone and argillite-Volcanic lithic sandstone with minor interbeds of argillite.
        Enumerated_Domain:
          Enumerated_Domain_Value: KJng
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Rocks of the Autochthon: Nooksack Formation (Early Cretaceous to Middle Jurassic)-Described here as sedimentary rocks, although much of the unit is incipiently recrystallized (Brown and others, 1981, 1987): Grit and thick-bedded sandstone-Poorly rounded to angular small pebble conglomerate and volcanic-lithic sandstone.  Minor interbeds of argillite.
        Enumerated_Domain:
          Enumerated_Domain_Value: KJnv
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Rocks of the Autochthon: Nooksack Formation (Early Cretaceous to Middle Jurassic)-Described here as sedimentary rocks, although much of the unit is incipiently recrystallized (Brown and others, 1981, 1987): Volcanic-rich conglomerate and sandstone-Massive to locally well-bedded pebble to boulder conglomerate rich in dacite and tonalite clasts.  Boulders as large as 1 m diameter.  Also includes some well-bedded volcanic sandstone and tuff.  Belemnite fragments common.
        Enumerated_Domain:
          Enumerated_Domain_Value: Jnw
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Rocks of the Autochthon: Nooksack Formation (Early Cretaceous to Middle Jurassic)-Described here as sedimentary rocks, although much of the unit is incipiently recrystallized (Brown and others, 1981, 1987): Wells Creek Volcanic Member -Incipiently recrystallized dacite, dacite breccia and tuff, and andesite, with some argillite interbeds.  Metamorphic pumpellyite, chlorite, epidote, and albite.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kjs
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Shuksan nappe: Semischist and phyllite of Mount Josephine (Early Cretaceous?)-Graphitic sericite-plagioclase-quartz phyllite and semischistose lithic-volcanic subquartzose sandstone.  Protolith sediments thin to medium bedded.  Locally highly contorted, but generally lacks prominent multiple crenulations characteristic of the Darrington Phyllite.
        Enumerated_Domain:
          Enumerated_Domain_Value: KJsu
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Shuksan nappe: Semischist and phyllite of Mount Josephine (Early Cretaceous?): Ultramafic rocks-Serpentinite and silica-carbonate rock.
        Enumerated_Domain:
          Enumerated_Domain_Value: Ked
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Shuksan nappe: Easton Metamorphic Suite (Early Cretaceous): Darrington Phyllite (Early Cretaceous)-Silvery to black quartzose graphitic phyllite, with minor greenschist, metachert, and muscovite-quartz-albite schist.  Commonly with multiple foliations and crenulation lineations; abundant quartz veins.  Dominant foliation is commonly second-generation or later.  Mineralogy is quartz-albite-white mica-chlorite, + lawsonite, garnet, and margarite.  Thin sections show well-crystallized white mica: fine grain size in hand sample reflects tendency of rock to break along post-peak metamorphic pressure-solution cleavage surfaces along which fine insoluble material has concentrated.  Locally interlayered with unit Kes.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kes
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Shuksan nappe: Easton Metamorphic Suite (Early Cretaceous): Shuksan Greenschist (Early Cretaceous)-Greenschist and lesser blueschist.  Locally includes iron- and manganese-rich quartzite (metachert), greenstone, and graphitic phyllite.  Rare relict clinopyroxene in some greenschist.  Schist varieties include dark-green, fine-grained, muscovite-chlorite-epidote-actinolite schist with common knots and masses of epidote, quartz-albite-chlorite veins, and relict pillow or breccia structure, and well-layered light-green chlorite-rich schist that appears to be metamorphosed tuff.  Well-layered, Fe3+-poor metatuffs with conspicuous patches of albite relict after plagioclase phenocrysts are locally abundant.  Blueschist bears Na-amphibole (crossite-soda actinolite-riebeckite) + hematite (Brown, 1986).  Locally interlayered with unit Ked.
        Enumerated_Domain:
          Enumerated_Domain_Value: Keu
          Enumerated_Domain_Value_Definition: ROCKS WEST OF THE STRAIGHT CREEK FAULT: Northwest Cascades System: Shuksan nappe: Easton Metamorphic Suite (Early Cretaceous): Ultramafic rock (Early Cretaceous)-Serpentinite, silica-carbonate rock, and forsterite-enstatite-tremolite-chlorite rock on Mount Sefrit (Tepper, 1985) and west of Grandy Creek.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKsgp
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): -Heterogeneous complex of supracrustal schist, amphibolite, and rare marble and ultramafic rocks intruded in a lit-par-lit fashion by mostly hornblende-biotite and biotite-tonalite orthogneiss.  Orthogneiss bodies range from a few centimeters thick in the banded gneisses to several kilometers thick in the mapped orthogneiss.  Abundant deformed dikes and sills of light-colored pegmatitic tonalite and lineated granite: Granite pegmatite -Granite pegmatite (associated with unit TKeb) in mostly layer-parallel sills and dikes; country rock sparse to absent between multiple intrusions.  Quartz in pegmatite generally highly strained, mylonitic to blastomylonitic.
       Enumerated_Domain:
          Enumerated_Domain_Value: TKsbg
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Banded gneiss, mostly biotite gneiss-Biotite schist, biotite-garnet schist, biotite paragneiss (some garnet, cummingtonite), hornblende-biotite paragneiss, gneissic hornblende-biotite tonalite, and tonalite gneiss.  Strongly layered rocks with minor amphibolite gneiss, and hornblende schist.  Commonly strongly migmatitic with concordant and crosscutting light-colored dikes of foliated, lineated, fine-grained to pegmatitic leucotonalite and lineated granite and granodiorite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKsbga
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Banded gneiss, mostly amphibole gneiss and amphibolite-Hornblende and biotite-hornblende paragneiss, gneissic amphibolite, hornblende schist, biotite schist and paragneiss, and tonalite gneiss.  Rare marble.  In some mapped areas, hornblendic rocks are conspicuous but may not be dominant.  Commonly strongly migmatitic with concordant and crosscutting light-colored dikes of foliated, lineated, fine-grained to pegmatitic leucotonalite and lineated granite and granodiorite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKso
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss-Gneissic hornblende-biotite tonalite.  Relatively uniform crystalloblastic granitoid gneiss with rare relict euhedral oscillatory-zoned plagioclase crystals.  Hornblende or biotite may predominate.  Garnet locally.  Quartz and biotite commonly moderately to highly strained.  Locally migmatitic with concordant and crosscutting light-colored dikes of foliated, lineated, fine-grained to pegmatitic leucotonalite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKsom
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss: Mafic orthogneiss-Garnet-hornblende diorite orthogneiss above Diablo Lake.  Also includes amphibolite and hornblendite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKsoa
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss: Mafic migmatite-Heterogeneous hornblende tonalite migmatite and orthogneiss rich in slivers of hornblendite and amphibolite east of Snowfield Peak.  Cross-cutting dikes of light-colored, fine-grained to pegmatitic, foliated and lineated tonalite and lineated granite and granodiorite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKsn
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss of The Needle-Hornblende tonalite to granodiorite orthogneiss with distinctive texture of approximately 1-mm equant crystals forming centimeter size patches rich in quartz, plagioclase, hornblende, or biotite.  Dominant foliation locally axial-planar to small folds of an earlier foliation.
        Enumerated_Domain:
          Enumerated_Domain_Value: Tksu
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Ultramafic rocks-Harzburgite tectonite, talc-tremolite schist, anthophyllite-talc-tremolite schist, chlorite-rich blackwall, and retrograde serpentinite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKsm
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Marble and calcsilicate rocks.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKho
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Plutons of the tonalitic group: Orthogneiss of Haystack Creek (Middle Eocene to Late Cretaceous)-Hornblende biotite gneiss with blotchy patches of aggregate mafic minerals.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKmo
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Plutons of the tonalitic group: Orthogneiss of Marble Creek (Middle Eocene to Late Cretaceous)-Biotite tonalite to granodiorite gneiss with minor hornblende, muscovite, and well-formed igneous(?) epidote.  Ranges from granitoid gneiss with intergranular quartz and relict euhedral oscillatory zoned plagioclase to highly strained flaser gneiss with anastomosing mylonite with quartz and biotite.  Pluton is rich in screens and rafts of supracrustal schists and pods of ultramafic rocks.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKto
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Plutons of the tonalitic group: Orthogneiss of Mount Triumph (Tertiary and Late Cretaceous)-Gneissic medium-grained biotite-hornblende tonalite.  Epidote locally intergrown with hornblende and biotite.  Weak foliation and lineation and common cataclasis.  Contact metamorphism by adjacent Chilliwack batholith has annealed some textures of earlier deformation.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKeb
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Plutons of the granodioritic group: Eldorado Orthogneiss (Middle Eocene to Late Cretaceous)-Biotite-hornblende monzodiorite to biotite granodiorite gneiss, rare tonalite and quartz diorite (Ford and others, 1988, p. 107-108).  Medium-grained subhedral to euhedral sodic plagioclase commonly filled with epidote or clinozoisite and set in a crystalloblastic to mylonitic matrix of quartz, K-feldspar, hornblende, biotite, and epidote; accessory sphene, apatite, zircon, and opaque oxides; commonly well -aligned prismatic aggregates of hornblende and biotite, but in many rocks mafic minerals are aligned in a streaky planar fabric.  Common mafic enclaves locally define strong flattening and weak strike-parallel elongation.  Gradational over several 100 meters into unit TKef.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKef
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Plutons of the granodioritic group: Eldorado Orthogneiss (Middle Eocene to Late Cretaceous): Flaser gneiss border zone-Fine- to medium-grained biotite-hornblende metatonalite and metagranodiorite flaser gneiss, with augen of quartz and plagioclase or simple sodic plagioclase mosaic and rare filled plagioclase crystals set in mylonitic fabric of finer-grained quartz, plagioclase, and mafic minerals.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKbl
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Plutons of the granodioritic group: Hidden Lake stock (Middle Eocene to Late Cretaceous)-Biotite metatonalite with relict hypidiomorphic granular texture.  Rocks are granodiorite based on CIPW normative minerals and (18O values greater than 10 (Ford and others, 1988, p. 26).  Plagioclase mostly filled with well-crystallized metamorphic epidote and muscovite; some grain margins have recrystallized and quartz is sutured.  Some K-feldspar is microcline.  Rock is massive and sharply intrusive.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKao
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Terrane overlap units and stitching plutons: Plutons of the granodioritic group: Orthogneiss of Alma Creek (Middle Eocene to Late Cretaceous)-Biotite leucogranodiorite and leucotonalite gneiss, with minor muscovite.  Hypidiomorphic granular with highly strained quartz; biotite commonly decussate.  CI<10.  Local 2 to 4 -cm diameter orbicules are biotite which tangentially rims quartzofeldspathic cores.  Some small irregular bodies northwest of Skagit River are not shown.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKns
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Napeequa Schist (Middle Eocene to Late Cretaceous)-Predominantly fine-grained hornblende-mica schist, mica-quartz schist, hornblende schist, amphibolite, garnet-biotite schist, and minor hornblende-zoisite schist, hornblende garbenschiefer, calc-silicate schist, marble, and ultramafic rocks.  In the Cascade River area and in the Straight Creek Fault zone, phyllitic muscovite-chlorite-quartz schist predominates.  Rocks are mostly white, tan, brown to black, locally greenish with conspicuous compositional banding.  Fine lamellar foliation, locally blastomylonitic.  On outcrop scale the schist is isoclinally folded, commonly crenulated; small crinkle folds of prominent foliation surfaces.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kns
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Napeequa Schist (Late Cretaceous)-Predominantly fine-grained hornblende-mica schist, mica-quartz schist, hornblende schist, amphibolite, garnet-biotite schist, and minor hornblende-zoisite schist, hornblende garbenschiefer, calc-silicate schist, marble, and ultramafic rocks.  In the Cascade River area and in the Straight Creek Fault zone, phyllitic muscovite-chlorite-quartz schist predominates.  Rocks are mostly white, tan, brown to black, locally greenish with conspicuous compositional banding.  Fine lamellar foliation, locally blastomylonitic.  On outcrop scale the schist is isoclinally folded, commonly crenulated; small crinkle folds of prominent foliation surfaces.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKnu
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Napeequa Schist (Middle Eocene to Late Cretaceous): Ultramafic rocks-Serpentinite, talc-magnesite schist, talc schist, tremolite-talc schist, and olivine-talc rocks.
        Enumerated_Domain:
          Enumerated_Domain_Value: Knu
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Napeequa Schist (Late Cretaceous): Ultramafic rocks-Serpentinite, talc-magnesite schist, talc schist, tremolite-talc schist, and olivine-talc rocks.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKcs
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Cascade River Schist (Middle Eocene to Late Cretaceous)-Mostly fine grained, highly fissile, green, brown, and black micaceous schist ranging from phyllitic sericite-quartz schist to granoblastic biotite- and muscovite-biotite-quartz-albite schist, hornblende-biotite-andesine schist, garbenschiefer, fine-grained amphibolite, and fine-grained paragneiss.  Many rocks have garnet, less commonly staurolite and kyanite.  Rare chloritoid.  Calcareous mica schist locally.  Hornblende is commonly blue green.  Relict clastic textures common in metasandstone; unit also includes small-pebble metaconglomerate.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kcs
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Cascade River Schist (Late Cretaceous)-Mostly fine grained, highly fissile, green, brown, and black micaceous schist ranging from phyllitic sericite-quartz schist to granoblastic biotite- and muscovite-biotite-quartz-albite schist, hornblende-biotite-andesine schist, garbenschiefer, fine-grained amphibolite, and fine-grained paragneiss.  Many rocks have garnet, less commonly staurolite and kyanite.  Rare chloritoid.  Calcareous mica schist locally.  Hornblende is commonly blue green.  Relict clastic textures common in metasandstone; unit also includes small-pebble metaconglomerate.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKcc
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Cascade River Schist (Middle Eocene to Late Cretaceous): Metaconglomerate-Gray to dark-green rocks ranging from boulder conglomerate with weak foliation to highly schistose rocks in which clasts are so highly attenuated that they are only visible on surfaces cut perpendicular to fabric lineation.  Identifiable clast protoliths are quartzite, volcanic rocks, and granitoid rocks, including rocks derived from the protolith of the Marblemount pluton.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kcc
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Cascade River Schist (Late Cretaceous): Metaconglomerate-Gray to dark-green rocks ranging from boulder conglomerate with weak foliation to highly schistose rocks in which clasts are so highly attenuated that they are only visible on surfaces cut perpendicular to fabric lineation.  Identifiable clast protoliths are quartzite, volcanic rocks, and granitoid rocks, including rocks derived from the protolith of the Marblemount pluton.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kcmv
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Cascade River Schist (Middle Eocene to Late Cretaceous): Metavolcanic rocks-Fine-grained leucogreenschist, commonly with relict highly flattened phenocrysts of plagioclase or mafic minerals.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kmd
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Marblemount pluton (Middle Eocene to Late Cretaceous)-Meta-quartz diorite and metatonalite and tonalitic gneiss; light-colored metatonalite dikes.  Locally includes unmetamorphosed hornblende tonalite north of Skagit River.  Rocks have CI =16-54 (Ford and others, 1988), are medium-grained, pale green, have numerous anastomosing zones rich in chlorite, epidote, and actinolitic hornblende, and vary from massive with relict hypidiomorphic granular texture to highly foliate and mylonitic.  Plagioclase commonly transformed to unzoned, complexly twinned albite filled with epidote and (or) white mica.
        Enumerated_Domain:
          Enumerated_Domain_Value: Kmf
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Chelan Mountains terrane: Marblemount pluton (Middle Eocene to Late Cretaceous): Flaser gneiss border zone-Dark-colored epidote-chlorite-muscovite-quartz-plagioclase flaser gneiss, locally with chlorite schist.  Subhedral to subidioblastic sodic plagioclase in a foliate matrix, locally with biotite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKhr
          Enumerated_Domain_Value_Definition: ROCKS IN THE ROSS LAKE FAULT ZONE: Ruby Creek Heterogeneous Plutonic Belt of Misch (1966) (Middle Eocene to Late Cretaceous)-Heterogeneous gabbro to granodiorite in small masses and dikes.  Grain size and composition varies considerably on an outcrop scale.  Some rocks cataclastically foliated.  Plutons of the belt intrude the phyllite and schist of Little Jack Mountain and are commonly rich in inclusions of the country rock.  Also includes much medium-colored fine- to medium-grained, locally cataclastic, hornblende-biotite tonalite and abundant light-colored hornblende-biotite tonalite to granodiorite.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKhri
          Enumerated_Domain_Value_Definition: ROCKS IN THE ROSS LAKE FAULT ZONE: Ruby Creek Heterogeneous Plutonic Belt of Misch (1966) (Middle Eocene to Late Cretaceous): Prominent inclusions of mafic metagabbro and ultramafic rocks-Similar to TKhr, with prominent inclusions of mafic and ultramafic components of the Skymo Complex of Wallace (1976).
        Enumerated_Domain:
          Enumerated_Domain_Value: TKhrd
          Enumerated_Domain_Value_Definition: ROCKS IN THE ROSS LAKE FAULT ZONE: Ruby Creek Heterogeneous Plutonic Belt of Misch (1966) (Middle Eocene to Late Cretaceous): Diorite-Pyroxene metadiorite, highly altered, locally cataclastic.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKs
          Enumerated_Domain_Value_Definition: ROCKS IN THE ROSS LAKE FAULT ZONE: Skymo Complex of Wallace (1976) (Middle Eocene to Late Cretaceous)-Metamorphosed troctolite, gabbronorite, and anorthosite intruded by irregular patches and veins of lighter colored medium- to coarse-grained gabbro and rare tonalitic pegmatite.  Gabbronorite locally grades to pyroxenite.  Troctolite and gabbronorite weather orange-brown.  Oikocrystic orthopyroxene in gabbronorite.  Troctolite, gabbronorite, and anorthosite weakly layered; cumulate origin is probable.  Unit is highly faulted and cut by mylonitic zones.
        Enumerated_Domain:
          Enumerated_Domain_Value: TKsf
          Enumerated_Domain_Value_Definition: ROCKS IN THE ROSS LAKE FAULT ZONE: Skymo Complex of Wallace (1976) (Middle Eocene to Late Cretaceous): Fine-grained granulites-Interlayered calc-silicate gneiss, garnet plagioclase schist, hypersthene-plagioclase gneiss, and orthogneiss (Hyatt and others, 1996).
        Enumerated_Domain:
          Enumerated_Domain_Value: TKlp
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Little Jack terrane: Phyllite and schist of Little Jack Mountain (Middle Eocene to Late Cretaceous)-Mostly quartz-mica phyllite and biotite schist with local staurolite, garnet, andalusite, and sillimanite.  Rare ribbon chert, local marble, and ubiquitous pods of metapyroxenite, talc-bearing metaperidotite, and serpentinite.  Local amphibolite and hornblende-biotite schist.  Biotite commonly porphyroblastic.  Intruded by dacite porphyry dikes ranging from undeformed to mylonitic with strong, mostly northwest-trending, stretching lineation.
        Enumerated_Domain:
          Enumerated_Domain_Value: JTrhgs
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Hozomeen terrane: Hozomeen Group (Mesozoic and Paleozoic): Greenstone, clastic sedimentary rock, limestone, and chert (Middle Jurassic to Late Triassic)-Heterogeneous discontinuously bedded greenstone, graywacke, argillite, marble, and ribbon chert.  Local chaotic mixing suggestive of deposition by submarine landslides.  Greenstones commonly derived from Ti-rich basalt, locally with well-developed pillows.  Partially recrystallized to prehnite-pumpellyite facies.  Limestones mostly coarsely recrystallized, gray, and in 0.1- to 10-m pods.  Deformational fabric ranges from none to (mostly) incipient slaty cleavage.  Description modified from Haugerud (1985).  Unit JTrhgs corresponds to the uppermost of four units described by McTaggart and Thompson (1967).
        Enumerated_Domain:
          Enumerated_Domain_Value: Trhc
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Hozomeen terrane: Hozomeen Group (Mesozoic and Paleozoic): Chert (Late and Middle Triassic)-Mostly ribbon chert and slaty argillite with minor greenstone and marble.  Probably equivalent to third highest of four units described by McTaggart and Thompson (1967).
        Enumerated_Domain:
          Enumerated_Domain_Value: Pzhg
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Hozomeen terrane: Hozomeen Group (Mesozoic and Paleozoic): Greenstone with minor argillite, chert, and limestone (Permian and Pennsylvanian)-Mostly pillow basalt, pillow breccia, flows, and minor basaltic tuff, with minor argillite, volcanic lithic sandstone, ribbon chert, and limestone.  Partially recrystallized to prehnite-pumpellyite facies.  Probably corresponds to second highest of four units described by McTaggart and Thompson (1967).
        Enumerated_Domain:
          Enumerated_Domain_Value: Pzhgl
          Enumerated_Domain_Value_Definition: ROCKS BETWEEN THE STRAIGHT CREEK FAULT AND ROSS LAKE FAULT ZONE: Hozomeen terrane: Hozomeen Group (Mesozoic and Paleozoic): Greenstone with minor argillite, chert, and limestone (Permian and Pennsylvanian): Limestone, chert, and minor greenstone and metatuff-Mostly gray, well-recrystallized limestone.
        Enumerated_Domain:
          Enumerated_Domain_Value: wa
          Enumerated_Domain_Value_Definition: water.
        Enumerated_Domain:
          Enumerated_Domain_Value: gl
          Enumerated_Domain_Value_Definition: glacier.
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      Attribute_Domain_Values:
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      Attribute_Definition: User-defined feature number.
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    Attribute
     Attribute_Label: PTTYPE
     Attribute_Definition: Location  of small outcrop of limestone (marble), or ultramafic rock too small to show at map scale.
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
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          Enumerated_Domain_Value: um
          Enumerated_Domain_Value_Definition: ultramafic rock
        Enumerated_Domain:
          Enumerated_Domain_Value: ls
          Enumerated_Domain_Value_Definition: limestone or marble
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      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
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      Attribute_Definition_Source: ESRI
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      Attribute_Definition_Source: ESRI
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      Attribute_Definition: Internal feature number.
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      Attribute_Domain_Values:
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      Attribute_Definition: User-defined feature number.
      Attribute_Definition_Source: ESRI
Attribute
    Attribute_Label: PTTYPE
    Attribute_Definition: Location of sample dated by radiometric or fission track methodes, and locations of reported fossils..
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: isoage
          Enumerated_Domain_Value_Definition: radiometric or fission-track age.  See Table 3 in published text keyed to sample number (http://pubs.usgs.gov/imap/i2660/
        Enumerated_Domain:
          Enumerated_Domain_Value: foss loc
          Enumerated_Domain_Value_Definition: Fossil locality with identified fossil.  See Table 2 in published text keyed to sample number (http://pubs.usgs.gov/imap/i2660/
    Attribute:
    Attribute_Label: SAMPNO
    Attribute_Definition: Field number of rock sample analysed for age determination or containing fossils
      Attribute_Definition_Source: Author
    Attribute:
      Attribute_Label: DESCRIPTION
    Attribute_Definition: additional information about sample, includes, comments on lithology, age, fossils, minerals analysed for radiometric age etc.
    Attribute:
      Attribute_Label: AGE
Attribute_Definition: age(s) of samples dated by radimetric or fission track methodes
    Attribute:
      Attribute_Label: REFERENCE
Attribute_Definition: bibliographic reference for age of sample; see References Cited in map text  (http://pubs.usgs.gov/imap/i2660/)
    Attribute:
      Attribute_Label: MAPNO
    Attribute_Definition: number on printed map; keyed to Tables 2 or 3 respectively (see  http://pubs.usgs.gov/imap/i2660/)
Attribute:
      Attribute_Label: UNIT
    Attribute_Definition: Source unit of sample.
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: AlmaCr pluton
          Enumerated_Domain_Value_Definition: Orthogneiss of Alma Creek (Middle Eocene to Late Cretaceous)-Biotite leucogranodiorite and leucotonalite gneiss, with minor muscovite.  Hypidiomorphic granular with highly strained quartz; biotite commonly decussate.  CI<10.  Local 2 to 4 -cm diameter orbicules are biotite which tangentially rims quartzofeldspathic cores.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: B.granodi.LittleBeav
          Enumerated_Domain_Value_Definition: Biotite granodiorite of Little Beaver Creek (Oligocene)-Mostly hornblende-biotite granodiorite and minor granite, locally quartz and plagioclase phyric; CI=3-10

      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: BakerLk.blueschist
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Blueschist of Baker Lake (Cretaceous to Jurassic metamorphic age)-Metabasaltic rocks, meta-ribbon chert, and marble, characterized by distinctive (for the Northwest Cascades System) high-pressure/low-temperature crossite, lawsonite, some aragonite metamorphism.  Metabasaltic rocks range from very fine grained schistose metatuff to incipiently recrystallized basalt
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Bell Pass melange
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Bell Pass mlange, undivided-Disrupted argillite, slate, phyllite, sandstone, semischist, ribbon chert, and basalt of the Elbow Lake Formation of Brown and others (1987), with tectonic blocks of meta-igneous rocks, gneiss, schist, ultramafic rocks, and marble.  Sandstone commonly lithic subquartzose, either volcanic rich and(or) chert rich; argillite is mostly scaly, and grades into slate and phyllite.  Greenstones are recrystallized basalt, mafic tuff, diabase, and gabbro and commonly make the most prominent outcrops.  Metamorphic minerals in greenstones and metasedimentary rocks are chlorite, epidote, albite, pumpellyite, rare actinolite, carbonate minerals, and indistinct masses of pumpellyite and(or) lawsonite
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Biot. alaskite of Mt
          Enumerated_Domain_Value_Definition: Biotite alaskite of Mount Blum (Oligocene)-Medium-grained biotite alaskite (granite) with prominent perthite prisms, rare hornblende, locally quartz phyric.  CI=1-4
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: CascadeRiver Schist
          Enumerated_Domain_Value_Definition: Cascade River Schist (Middle Eocene to Late Cretaceous)-Mostly fine grained, highly fissile, green, brown, and black micaceous schist ranging from phyllitic sericite-quartz schist to granoblastic biotite- and muscovite-biotite-quartz-albite schist, hornblende-biotite-andesine schist, garbenschiefer, fine-grained amphibolite, and fine-grained paragneiss.  Many rocks have garnet, less commonly staurolite and kyanite.  Rare chloritoid.  Calcareous mica schist locally.  Hornblende is commonly blue green.  Relict clastic textures common in metasandstone; unit also includes small-pebble metaconglomerate; Metavolcanic rocks-Fine-grained leucogreenschist, commonly with relict highly flattened phenocrysts of plagioclase or mafic minerals.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack Group
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian)-Mostly well bedded gray to brown and black argillite and volcanic subquartzose sandstone with minor pebble conglomerate, marble,  and rare chert.  Also basalt, andesite, dacite, volcanic breccia, and tuff.  In sedimentary rocks, graded beds, scour structures, and load casts locally prominent; also includes some rhythmite.  Locally sandstone beds strongly disrupted in argillite matrix.  Rocks grade rapidly from little-deformed to phyllitic with a pronounced foliation generally subparallel to bedding.  Most rocks partially recrystallized in sub-greenschist facies; Limestone and marble (Permian, Carboniferous, and Devonian)-Mostly coarsely crystalline, gray to black, and petroliferous limestone and marble;  occurs in small isolated pods and blocks; locally fossiliferous.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: ChilliwackVal phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene) Chilliwack valley phase (Oligocene)-Biotite-hornblende tonalite, granodiorite, and minor quartz diorite, commonly with subhedral plagioclase prisms in quartz mesostasis.  Minor clinopyroxene; locally.  CI=7-30, but mostly CI=15-20.  As mapped, probably includes several plutons.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Conglom.ofBaldMtn
          Enumerated_Domain_Value_Definition: Conglomerate of Bald Mountain  (Age uncertain)-Coarse polymictic conglomerate, chert-pebble conglomerate, grey lithic sandstone, and phyllitic black to silvery argillite.  Polymictic conglomerate includes clasts of chert, argillite, green metatonalite, dacite, buff-weathering calcite-cemented quartzose sandstone, and rare bedded lithic sandstone.  Clast-supported, pebbles and boulders well rounded.  Clasts in conglomerates locally flattened and boudinaged.  Rare siltstone and shale interbeds.  East of Goat Mountain  unit contains abundant fossil plant material.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Cultus & Chilliwack
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) and Cultus Formation of Brown and others (1987) undivided (Mesozoic and Paleozoic).
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Cultus Formation
          Enumerated_Domain_Value_Definition: Cultus Formation of Brown and others (1987) (Early Jurassic and Late Triassic)-Tuffaceous siltstone, sandstone, and argillite, mostly thin bedded to finely laminated.  Also includes much rhythmite.  Medium-bedded sandstone on Loomis Mountain.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: dike
          Enumerated_Domain_Value_Definition: Dike cutting older rocks.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Easton Meta.Suite
          Enumerated_Domain_Value_Definition: Easton Metamorphic Suite (Early Cretaceous): Shuksan Greenschist (Early Cretaceous)-Greenschist and lesser blueschist.  Locally includes iron- and manganese-rich quartzite (metachert), greenstone, and graphitic phyllite.  Rare relict clinopyroxene in some greenschist.  Schist varieties include dark-green, fine-grained, muscovite-chlorite-epidote-actinolite schist with common knots and masses of epidote, quartz-albite-chlorite veins, and relict pillow or breccia structure, and well-layered light-green chlorite-rich schist that appears to be metamorphosed tuff.  Well-layered, Fe3+-poor metatuffs with conspicuous patches of albite relict after plagioclase phenocrysts are locally abundant.  Blueschist bears Na-amphibole (crossite-soda actinolite-riebeckite) + hematite (Brown, 1986).  Locally interlayered with unit Ked.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Elbow Lake Fm.
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Bell Pass mlange, undivided-Disrupted argillite, slate, phyllite, sandstone, semischist, ribbon chert, and basalt of the Elbow Lake Formation of Brown and others (1987), with tectonic blocks of meta-igneous rocks, gneiss, schist, ultramafic rocks, and marble.  Sandstone commonly lithic subquartzose, either volcanic rich and(or) chert rich; argillite is mostly scaly, and grades into slate and phyllite.  Greenstones are recrystallized basalt, mafic tuff, diabase, and gabbro and commonly make the most prominent outcrops.  Metamorphic minerals in greenstones and metasedimentary rocks are chlorite, epidote, albite, pumpellyite, rare actinolite, carbonate minerals, and indistinct masses of pumpellyite and(or) lawsonite.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Eldorado Orthogneiss
          Enumerated_Domain_Value_Definition: Eldorado Orthogneiss (Middle Eocene to Late Cretaceous)-Biotite-hornblende monzodiorite to biotite granodiorite gneiss, rare tonalite and quartz diorite (Ford and others, 1988, p. 107-108).  Medium-grained subhedral to euhedral sodic plagioclase commonly filled with epidote or clinozoisite and set in a crystalloblastic to mylonitic matrix of quartz, K-feldspar, hornblende, biotite, and epidote; accessory sphene, apatite, zircon, and opaque oxides; commonly well -aligned prismatic aggregates of hornblende and biotite, but in many rocks mafic minerals are aligned in a streaky planar fabric.  Common mafic enclaves locally define strong flattening and weak strike-parallel elongation.  Gradational over several 100 meters into unit TKef.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Gabbro of CopperLk.
          Enumerated_Domain_Value_Definition: Gabbro of Copper Lake (Oligocene)-Oikocrystic hornblende gabbro surrounded by equigranular hornblende diorite.  Some pyroxene in the diorite which is also zoned to quartz and biotite-bearing varieties.  CI=25-40.  Cumulous textures throughout.  Description adopted from Tepper (1991, p. 20-27).
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Grano.Mt.Despair
          Enumerated_Domain_Value_Definition: Granodiorite of Mount Despair (Oligocene)-Biotite-hornblende granodiorite with minor tonalite, quartz diorite, and quartz monzodiorite.  Conspicuous quartz eyes which are glomerocrysts of rounded quartz grains with K-feldspar in the curved triangular interstices.  CI=7-20, but mostly CI=10-12; hornblende usually predominates
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Hannegan Vols.
          Enumerated_Domain_Value_Definition: Hannegan Volcanics (Pliocene): Volcanic breccia-Mostly clinopyroxene-hornblende andesite clasts along with many clasts of older rocks in andesite tuff matrix.  Many andesite dikes, sills and (or) flows; Tuff-White to light-brown dacite tuff and welded tuff, some rhyolite tuff, and rare andesite tuff and flow rocks, commonly highly altered.  Bedding obscure.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HaystackCr pluton
          Enumerated_Domain_Value_Definition: Orthogneiss of Haystack Creek (Middle Eocene to Late Cretaceous)-Hornblende biotite gneiss with blotchy patches of aggregate mafic minerals.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HiddenLk stock
          Enumerated_Domain_Value_Definition: Hidden Lake stock (Middle Eocene to Late Cretaceous)-Biotite metatonalite with relict hypidiomorphic granular texture.  Rocks are granodiorite based on CIPW normative minerals and d 18O values greater than 10 (Ford and others, 1988, p. 26).  Plagioclase mostly filled with well-crystallized metamorphic epidote and muscovite; some grain margins have recrystallized and quartz is sutured.  Some K-feldspar is microcline.  Rock is massive and sharply intrusive.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Hozomeen Group
          Enumerated_Domain_Value_Definition: Hozomeen Group (Mesozoic and Paleozoic): Chert (Late and Middle Triassic)-Mostly ribbon chert and slaty argillite with minor greenstone and marble.  Probably equivalent to third highest of four units described by McTaggart and Thompson (1967); Limestone, chert, and minor greenstone and metatuff-Mostly gray, well-recrystallized limestone.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Indian Mtn.phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Indian Mountain phase (Oligocene)-Biotite-hornblende granodiorite and granite, with minor quartz monzonite and quartz monzodiorite.  CI=3-19, most CI=12-19.  Texturally heterogeneous, some quartz or K-feldspar pheoncrystic but these minerals are generally mesostasic; locally granophyric.  Rock is commonly pinkish and with chloritized hornblende and biotite.  As mapped, probably includes several plutons.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Kulshan
          Enumerated_Domain_Value_Definition: Rocks of Kulshan caldera (early Pleistocene): Rhyodacite lava flows, domes, dikes and shallow intrusions - At least seven separate eruptive units of biotite-hypersthene-hornblende-plagioclase rhyodacite (69-72% SiO2) intrude and overlie intracaldera ignimbrite or sedimentary deposits.  Five more intrude and overlie unit KJna on Cougar Divide (where three are shown on the geologic map), and at least one dike (30 m thick, but not shown on the map) of similar rhyodacite cuts unit Pcmv on the divide between Swift and Rainbow  Creeks just south of the caldera.  Compositionally, the lavas and dikes are similar to the dominant pumice in the ignimbrite or slightly less evolved.  Phenocryst contents range widely, from 5 to 25%.  Like the ignimbrite, the lavas and dikes contain plagioclase, hypersthene, hornblende, biotite, FeTi oxides, apatite, and zircon, although one or more of these may be missing in some flows; sanidine is lacking, and clinopyroxene and quartz are absent or very rare.  Lithologically, the lavas and dikes are massive or flow-banded felsite; glacial erosion has stripped all but sparse remnants of glassy external zones, which tend to be altered where they survive.  The felsite is pale to medium grey where fresh but is largely tan to orange-brown owing to pervasive oxidation and ferruginous films on joints and vugs.  In areas of hydrothermal alteration, especially where brecciated, the lavas are pale green, cream, or white, commonly stained and streaked ochre to rusty brown due to decomposition of disseminated pyrite.
   Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Lake Ann stock
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Lake Ann stock (Pliocene)-Medium-grained hypersthene-clinopyroxene quartz monzodiorite and quartz monzonite, locally with biotite and very minor hornblende.  Normatively some is granodiorite; CI=12-19 (James, 1980). Euhedral biotite common near roof above Lake Ann.
        Enumerated_Domain:
          Enumerated_Domain_Value: Lake Ann stock hornf
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Lake Ann stock (Pliocene)-hornfels adjacent to Lake Ann stock.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MarbleCr.pluton
          Enumerated_Domain_Value_Definition: Orthogneiss of Marble Creek (Middle Eocene to Late Cretaceous)-Biotite tonalite to granodiorite gneiss with minor hornblende, muscovite, and well-formed igneous(?) epidote.  Ranges from granitoid gneiss with intergranular quartz and relict euhedral oscillatory zoned plagioclase to highly strained flaser gneiss with anastomosing mylonite with quartz and biotite.  Pluton is rich in screens and rafts of supracrustal schists and pods of ultramafic rocks.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Marblemount pluton
          Enumerated_Domain_Value_Definition: Marblemount pluton (Middle Eocene to Late Cretaceous)-Meta-quartz diorite and metatonalite and tonalitic gneiss; light-colored metatonalite dikes.  Locally includes unmetamorphosed hornblende tonalite north of Skagit River.  Rocks have CI =16-54 (Ford and others, 1988), are medium-grained, pale green, have numerous anastomosing zones rich in chlorite, epidote, and actinolitic hornblende, and vary from massive with relict hypidiomorphic granular texture to highly foliate and mylonitic.  Plagioclase commonly transformed to unzoned, complexly twinned albite filled with epidote and (or) white mica.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MineralMtn.pluton
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Mineral Mountain pluton (Miocene)-Biotite granite.  CI=3-7.  Characterized by conspicuous quartz eyes several centimeters across which are glomerocrysts of rounded quartz grains with K-feldspar in the curved triangular interstices.  Micrographic integrowths of K-feldspar and quartz common.  Conspicuous chloritic alteration.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Mount Baker
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of present-day Mount Baker stratovolcano (Holocene and late Pleistocene) - Plagioclase-rich pyroxene andesite (56-63% SiO2; mostly olivine-bearing) lava flows and flow breccia with subordinate agglutinate, scoria, and pyroclastic-flow deposits - all erupted from the central vent of the modern stratovolcano. Unit includes andesite lava remnants along Kulshan, Heliotrope, and Glacier Creeks; Andesite of Table Mountain (middle Pleistocene) - Plagioclase-rich pyroxene andesite lava flows (59-62.5% SiO2) that form stacks as thick as 150 m at Table Mountain  and 250 m at nearby Kulshan Ridge.  Glacially scoured remnants, mostly glassy and polygonally jointed, make up much of the surface in the Heather Meadows ski area.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Mt.Sefrit gabbronori
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Mount Sefrit Gabbronorite of Tepper and others (1993) (Miocene)-Mostly olivine-bearing gabbronorite with minor two-pyroxene diorite, hornblende diorite, and quartz diorite.  Rocks are dark, partly because of swarms of minute dark inclusions in calcic plagioclase (Tepper, 1985).
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Napeequa Schist
          Enumerated_Domain_Value_Definition: Napeequa Schist (Middle Eocene to Late Cretaceous)-Predominantly fine-grained hornblende-mica schist, mica-quartz schist, hornblende schist, amphibolite, garnet-biotite schist, and minor hornblende-zoisite schist, hornblende garbenschiefer, calc-silicate schist, marble, and ultramafic rocks.  In the Cascade River area and in the Straight Creek Fault zone, phyllitic muscovite-chlorite-quartz schist predominates.  Rocks are mostly white, tan, brown to black, locally greenish with conspicuous compositional banding.  Fine lamellar foliation, locally blastomylonitic.  On outcrop scale the schist is isoclinally folded, commonly crenulated; small crinkle folds of prominent foliation surfaces.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Nooksack Formation
          Enumerated_Domain_Value_Definition: Nooksack Formation (Early Cretaceous to Middle Jurassic): Argillite and sandstone-Predominantly massive to laminated black argillite.  Locally with thin to medium beds of mostly lithic-volcanic sandstone.  Also includes minor limy siltstone and limestone.  Some beds heavily bioturbated.  Local detrital muscovite.  Cleavage weakly developed north of Mount Baker, but pronounced to south.  Argillite near top of the Wells Creek Volcanic Member rich in pyrogenic plagioclase and quartz phenocrysts.  Belemnite molds characteristic; Thick-bedded sandstone and argillite-Volcanic lithic sandstone with minor interbeds of argillite.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Perry Creek phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Perry Creek phase (Miocene and Oligocene)-Mostly biotite-hornblende tonalite and granodiorite, commonly with relict clinopyroxene.  Minor quartz monzodiorite and quartz diorite.  Hornblende or biotite may predominate.  Quartz is typically mesostasic.  CI=8-22, but most are CI=12-19.  As mapped, probably includes several plutons.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Qtzmonzodi.RedoubtCt
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Quartz monzodiorite of Redoubt Creek (Miocene)-Biotite-pyroxene-hornblende quartz monzodiorite, quartz monzonite, granite, granodiorite, and diorite, commonly altered, with pinkish cast.  CI=3-20, but most CI=11-17.  Some rocks are porphyritic allotriomorphic and vermicular; micrographic quartz is common (Tepper, 1991, p. 68).
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Ruth Cr.pluton
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Quartz monzodiorite of Redoubt Creek (Miocene): Ruth Creek pluton (Miocene)-Biotite granodiorite, some granite and quartz monzodiorite, locally with quartz eyes as large as 1 cm in diameter; CI=3-7 (Tepper, 1991, p. 78), but mostly 4-5.  Rare blocky hornblende with pyroxene cores.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Semisch&phy.MtJoseph
          Enumerated_Domain_Value_Definition: Semischist and phyllite of Mount Josephine (Early Cretaceous?)-Graphitic sericite-plagioclase-quartz phyllite and semischistose lithic-volcanic subquartzose sandstone.  Protolith sediments thin to medium bedded.  Locally highly contorted, but generally lacks prominent multiple crenulations characteristic of the Darrington Phyllite.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: SilesiaCr pluton
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Silesia Creek pluton (Oligocene)-Biotite-hornblende granodiorite, quartz monzodiorite and quartz diorite with inclusions and layers of biotite granodiorite and granite; some granitic xenoliths as long as 200 m.  CI=5-20.  Quartz diorite displays prominent magmatic alignment of feldspar and mafic minerals.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Skagit Gneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous)-Heterogeneous complex of supracrustal schist, amphibolite, and rare marble and ultramafic rocks intruded in a lit-par-lit fashion by mostly hornblende-biotite and biotite-tonalite orthogneiss.  Orthogneiss bodies range from a few centimeters thick in the banded gneisses to several kilometers thick in the mapped orthogneiss.  Abundant deformed dikes and sills of light-colored pegmatitic tonalite and lineated granite: Banded gneiss, mostly biotite gneiss-Biotite schist, biotite-garnet schist, biotite paragneiss (some garnet, cummingtonite), hornblende-biotite paragneiss, gneissic hornblende-biotite tonalite, and tonalite gneiss.  Strongly layered rocks with minor amphibolite gneiss, and hornblende schist.  Commonly strongly migmatitic with concordant and crosscutting light-colored dikes of foliated, lineated, fine-grained to pegmatitic leucotonalite and lineated granite and granodiorite; Orthogneiss-Gneissic hornblende-biotite tonalite.  Relatively uniform crystalloblastic granitoid gneiss with rare relict euhedral oscillatory-zoned plagioclase crystals.  Hornblende or biotite may predominate.  Garnet locally.  Quartz and biotite commonly moderately to highly strained.  Locally migmatitic with concordant and crosscutting light-colored dikes of foliated, lineated, fine-grained to pegmatitic leucotonalite; Mafic orthogneiss-Garnet-hornblende diorite orthogneiss above Diablo Lake.  Also includes amphibolite and hornblendite; and Orthogneiss of The Needle-Hornblende tonalite to granodiorite orthogneiss with distinctive texture of approximately 1-mm equant crystals forming centimeter size patches rich in quartz, plagioclase, hornblende, or biotite.  Dominant foliation locally axial-planar to small folds of an earlier foliation.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Tonalite of Maiden L
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Tonalite of Maiden Lake-Biotite-hornblende metatonalite and metaquartz diorite with highly altered plagioclase and biotite.  Hypidiomorphic granular.  Metamorphic minerals are chlorite, epidote, prehnite, pumpellyite, sericite and carbonate.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Vedder Cmplx
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Vedder Complex of Armstrong and others (1983) (Permian metamorphic age)-Amphibolite, blueschist, micaceous quartzite, and mica-quartz schist.  Some garnet.  Amphiboles are hornblende, actinolite, and barroisite.  Some amphibolites contain albite porphyroblasts.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Vol.rks.MtRahm
          Enumerated_Domain_Value_Definition: Volcanic rocks of Mount Rahm (Oligocene)-Dacitic to less commonly andesitic breccias, tuffs, and flows with some feldspathic sandstone and conglomerate interbeds.  Welded dacite tuff common.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Vol.rks.ofMt.Herman
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Volcanic rocks of Mount Herman (Permian)-Breccia, pillows, pillow breccia, and associated volcanic sandstone of basalt or basaltic andesite composition.  Most volcanic rocks are plagioclase-phyric, some are amygdaloidal.  Unit weathers orange-brown; dark- to light-green on fresh surfaces.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Wells Creek Member
          Enumerated_Domain_Value_Definition: Nooksack Formation (Early Cretaceous to Middle Jurassic): Wells Creek Volcanic Member -Incipiently recrystallized dacite, dacite breccia and tuff, and andesite, with some argillite interbeds.  Metamorphic pumpellyite, chlorite, epidote, and albite.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Yellow Aster
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Yellow Aster Complex of Misch (1966) (Paleozoic protolith age): Non-gneissic rocks-Predominantly  massive metagabbro, metadiabase, metatonalite; locally includes minor gneissic igneous rocks.  May include late Paleozoic or Mesozoic intrusive rocks similar to units MzPzg and MzPzt and Gneissic rocks-Layered siliceous gneiss, quartz-rich pyroxene gneiss, gneissic megacrystic granite, and minor marble, as well as associated metagabbro, metadiabase, and metatonalite.  Gneissic granite with K-feldspar megacrysts known only from Kidney Creek.  Includes areas lacking siliceous gneiss, but with strongly mylonitic quartz-rich meta-igneous rocks.  Talus blocks east of Park Butte  grade from graphitic marble to quartz-rich pyroxene gneiss.  Most rocks are highly strained and recrystallized in amphibolite or upper-greenschist facies.  Locally, intruded by associated metagabbro, metadiabase, and metatonalite.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Younger ss & cgl
          Enumerated_Domain_Value_Definition: Younger sandstone and conglomerate (middle Eocene or younger)-West of lower Bacon Creek, mostly coarse cobble conglomerate with clasts derived from the Marblemount pluton
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  Horizontal_Coordinate_System_Definition:
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        Map_Projection_Name: Transverse Mercator
        Transverse_Mercator:
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          Latitude_of_Projection_Origin: 0.000000
          False_Easting: 500000.000000
          False_Northing: 0.000000
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        Coordinate_Representation:
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      Ellipsoid_Name: Clarke 1866
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      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: AREA
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Area is always zero for point coverages.  Values are automatically generated.
    Attribute:
      Attribute_Label: PERIMETER
      Attribute_Definition: Perimeter of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Perimeter is always zero for point coverages.  Values are automatically generated.
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      Attribute_Label: MBSTRUCT#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
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      Attribute_Label: MBSTRUCT-ID
      Attribute_Definition: User-defined feature number.
      Attribute_Definition_Source: ESRI
    Attribute:
     Attribute_Label: PTTYPE
    Attribute_Definition: strike and dip of planar structures and bearing and plunge of linear structures
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: _l_lineation_i_
          Enumerated_Domain_Value_Definition: inclined lineation
         Enumerated_Domain:
          Enumerated_Domain_Value: bedding w/tops
          Enumerated_Domain_Value_Definition: strike and dip of bedding; top direction known

         Enumerated_Domain:
          Enumerated_Domain_Value: bedding 
          Enumerated_Domain_Value_Definition: strike and dip of bedding; top direction unknown
         Enumerated_Domain:
          Enumerated_Domain_Value: crumpled bedding 
          Enumerated_Domain_Value_Definition: strike and dip of bedding, somewhat folded on outcrop scale; top direction unknown
         Enumerated_Domain:
          Enumerated_Domain_Value: horizontal lineation
          Enumerated_Domain_Value_Definition: strike of lineation
         Enumerated_Domain:
          Enumerated_Domain_Value: foliation
          Enumerated_Domain_Value_Definition: strike and dip of aligned planar minerals in metamorphic rocks
         Enumerated_Domain:
           Enumerated_Domain_Value: fault_ball
          Enumerated_Domain_Value_Definition: position of ball symbol showing downthrown side of high-angle fault
        Enumerated_Domain:
          Enumerated_Domain_Value: vert foliation
          Enumerated_Domain_Value_Definition: strike of vertical foliation
         Enumerated_Domain:
          Enumerated_Domain_Value: ot bedding w/tops 
          Enumerated_Domain_Value_Definition: strike and dip of overturned bedding; original top direction known
         Enumerated_Domain:
          Enumerated_Domain_Value: vert bedding
          Enumerated_Domain_Value_Definition: Vertical bedding; top direction unknown
         Enumerated_Domain:
          Enumerated_Domain_Value: vert bedding w/tops
          Enumerated_Domain_Value_Definition: vertical bedding; top direction known
         Enumerated_Domain:
          Enumerated_Domain_Value: horz foliation
          Enumerated_Domain_Value_Definition: horizontal foliation
         Enumerated_Domain:
          Enumerated_Domain_Value: flat bedding
          Enumerated_Domain_Value_Definition: horizontal bedding
         Enumerated_Domain:
          Enumerated_Domain_Value: _l_fold_i_
          Enumerated_Domain_Value_Definition: minor fold with inclined axis
         Enumerated_Domain:
          Enumerated_Domain_Value: _l_lineation_att_I_
          Enumerated_Domain_Value_Definition: inclined lineation combined with foliation
    Attribute:
Attribute_Label: DIP
Attribute_Definition: Dip of planar structure (angle of plane to horizontal) or plunge of lineation (angle of lineation to horizontal)
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
    Attribute:
      Attribute_Label: STRIKE
Attribute_Definition: Strike of planar structure (azimuth of horizontal line on plane) or azimuth of linear structure
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        Transverse_Mercator:
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          Latitude_of_Projection_Origin: 0.000000
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          False_Northing: 0.000000
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        Coordinate_Representation:
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          Ordinate_Resolution: 0.000128
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      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.400000
      Denominator_of_Flattening_Ratio: 294.978698
Entity_and_Attribute_Information:
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    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: AREA
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Area is always zero for point coverages.  Values are automatically generated.
    Attribute:
      Attribute_Label: PERIMETER
      Attribute_Definition: Perimeter of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Perimeter is always zero for point coverages.  Values are automatically generated.
    Attribute:
      Attribute_Label: MBROCKSAMP#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: MBROCKSAMP-ID
      Attribute_Definition: User-defined feature number.
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: PTTYPE
      Attribute_Definition: archival category
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
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          Enumerated_Domain_Value: archival
          Enumerated_Domain_Value_Definition: most representative sample or unusual specimen in easily retrieved archive, North Cascades National Park, Marblemount, WA
Attribute_Domain_Values:
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          Enumerated_Domain_Value: store
          Enumerated_Domain_Value_Definition: sample in boxed storage, North Cascades National Park, Marblemount, WA
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: combine
          Enumerated_Domain_Value_Definition:multiple  samples from same collection site in archive and store.
       Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: special
          Enumerated_Domain_Value_Definition: unusual disposition of sample and/or thin section
        Attribute_Label: SAMPNO
    Attribute_Definition: Field number of sample
      Attribute_Definition_Source: Author
    Attribute:
      Attribute_Label: SEL
    Attribute_Definition: number indicating category (archival or store, etc.) and existence of thin section for sample
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: archival sample, no thin section
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: archival sample with thin section
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition: stored sample without thin section
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: 4
          Enumerated_Domain_Value_Definition: stored sample with thin section
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: 5
          Enumerated_Domain_Value_Definition: Thin section exists, but sample missing from NCNP collection or record incomplete (see description field below)
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: 7
          Enumerated_Domain_Value_Definition: Sample and/or thin secion sent to Dave Tucker, Western Washington University, Bellingham, WA (see description field below)
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: 6
          Enumerated_Domain_Value_Definition: multiple samples at collection site. Some may have thin sections (see description field below)
    Attribute:
      Attribute_Label: DESCRIPTION
    Attribute_Definition: additional information about sample, includes, comments on lithology, age, references, etc.  For "combine" samples, identifies those with thin sections
      Attribute_Definition_Source: Author
     Attribute:
      Attribute_Label: UNIT
    Attribute_Definition: Source unit of sample
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: B.granodiorite of Little Beaver Cr
          Enumerated_Domain_Value_Definition: Biotite granodiorite of Little Beaver Creek (Oligocene); number of samples of this unit = 14; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Bell Pass melange: Vedder Complex
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Vedder Complex of Armstrong and others (1983) (Permian metamorphic age); number of samples of this unit = 8; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Bell Pass melange: Yellow Aster Cmplx
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Yellow Aster Complex of Misch (1966) (Paleozoic protolith age); number of samples of this unit = 50; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Bell Pass melange; Baker Lk blueschist
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Blueschist of Baker Lake (Cretaceous to Jurassic metamorphic age); number of samples of this unit = 5; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Bell Pass melange; Elbow Lk. Fm.
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Bell Pass mlange, undivided; number of samples of this unit = 50; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Bell Pass melange; ultramafite
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Ultramafic rocks; number of samples of this unit = 6; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Bell Pass melange; Twin Sisters
          Enumerated_Domain_Value_Definition: Rocks of the Bell Pass mlange (Cretaceous to Late Jurassic): Ultramafic rocks: Twin Sisters Dunite of Ragan; number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Biot. alaskite of Mt. Blum
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Biotite alaskite of Mount Blum (Oligocene); number of samples of this unit = 11; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Cascade River Schist
          Enumerated_Domain_Value_Definition: Cascade River Schist (Middle Eocene to Late Cretaceous); number of samples of this unit = 11; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack bath:BakerR phase:PriceGl plu
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Price Glacier pluton; number of samples of this unit = 4; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack bath;Baker R.phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Baker River phase (Oligocene); number of samples of this unit = 34; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack Group
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian); Limestone and marble (Permian, Carboniferous, and Devonian); number of samples of this unit = 46; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack Group: sed.rks.of Mt.Herman
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Sedimentary rocks of Mount Herman (Permian); number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack Group: vol.rks.of Mt.Herman
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Volcanic rocks of Mount Herman (Permian) ; number of samples of this unit = 14; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack Group: volcanic rocks
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) (Permian, Carboniferous, and Devonian): Volcanic rocks (Permian, Carboniferous, and Devonian); number of samples of this unit = 22; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack Grp, Cultus Fm, undivided
          Enumerated_Domain_Value_Definition: Chilliwack Group of Cairnes (1944) and Cultus Formation of Brown and others (1987) undivided (Mesozoic and Paleozoic); number of samples of this unit = 12; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack val.phase:dark ton
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Chilliwack valley phase (Oligocene): Dark tonalite; number of samples of this unit = 4; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chilliwack valley phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Chilliwack valley phase (Oligocene); number of samples of this unit = 51; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Chuckanut Formation
          Enumerated_Domain_Value_Definition: LATE OROGENIC  AND POST OROGENIC DEPOSITS : Chuckanut Formation (Eocene); number of samples of this unit = 6; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Conglomerate of Bald Mountain
          Enumerated_Domain_Value_Definition: Conglomerate of Bald Mountain  (Age uncertain); number of samples of this unit = 5; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Cultus Formation
          Enumerated_Domain_Value_Definition: Cultus Formation of Brown and others (1987) (Early Jurassic and Late Triassic); number of samples of this unit = 25; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Darrington Phyllite
          Enumerated_Domain_Value_Definition: Easton Metamorphic Suite (Early Cretaceous): Darrington Phyllite (Early Cretaceous); number of samples of this unit = 7; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: dike
          Enumerated_Domain_Value_Definition: dike which cuts Rocks of the Chilliwack composite batholith: Pocket Peak phase (Oligocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Eldorado orthogneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Plutons of the granodioritic group: Eldorado Orthogneiss (Middle Eocene to Late Cretaceous); number of samples of this unit = 17; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Eldorado orthogneiss: flaser gneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Plutons of the granodioritic group: Eldorado Orthogneiss (Middle Eocene to Late Cretaceous): Flaser gneiss border zone; number of samples of this unit = 5; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Eldorado orthogneiss: metadikes
          Enumerated_Domain_Value_Definition: foliated dikes cutting Terrane overlap units and stitching plutons: Plutons of the granodioritic group: Eldorado Orthogneiss (Middle Eocene to Late Cretaceous); number of samples of this unit = 16; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Ensawkwatch diorite
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Miscellaneous gabbros and diorites (Oligocene?): Inclusion-rich diorite of Ensawkwatch Creek; number of samples of this unit = 10; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Gabbro of Copper Lake
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Gabbro of Copper Lake (Oligocene); number of samples of this unit = 4; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Granite of Depot Cr
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Granite of Depot Creek (Miocene); number of samples of this unit = 2; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Granite of Ruth Mtn.
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Granite of Ruth Mountain (Pliocene); number of samples of this unit = 7; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Granite of W. Bear Mtn.
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Granite of western Bear Mountain (Miocene?); number of samples of this unit = 8; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Granite porphyry of Egg Lake
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Granite porphyry of Egg Lake (Pliocene); number of samples of this unit = 5; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Granodiorite of Mt.Despair
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene):Granodiorite of Mount Despair (Oligocene); number of samples of this unit = 17; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Grd. Mt.Despair: agmatite
          Enumerated_Domain_Value_Definition: : INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene):Granodiorite of Mount Despair (Oligocene): Agmatite; number of samples of this unit = 8; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Hannegan Volcanics
          Enumerated_Domain_Value_Definition: Hannegan Volcanics (Pliocene): Volcanic breccia and Tuff; number of samples of this unit = 18; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Hetero. ton. and granod. of Middle Pk.
          Enumerated_Domain_Value_Definition INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Heterogeneous tonalite and granodiorite of Middle Peak (Oligocene?); number of samples of this unit = 6; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Hozomeen Group
          Enumerated_Domain_Value_Definition: Hozomeen Group (Mesozoic and Paleozoic): Chert (Late and Middle Triassic) and Greenstone with minor argillite, chert, and limestone (Permian and Pennsylvanian); number of samples of this unit = 39; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Indian Mtn. Phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Indian Mountain phase (Oligocene); number of samples of this unit = 17; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Intrusive breccia
          Enumerated_Domain_Value_Definition: : INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Intrusive breccia (Miocene and/or Oligocene); number of samples of this unit = 13; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Lake Ann stock
          Enumerated_Domain_Value_Definition: : INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Lake Ann stock; number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Marblemount pluton
          Enumerated_Domain_Value_Definition: Marblemount pluton; number of samples of this unit = 7; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Marblemount pluton:flaser gn. border
          Enumerated_Domain_Value_Definition: Marblemount pluton; Flaser gneiss border zone number of samples of this unit = 2; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of Bastille Ridge
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Bastille Ridge (middle Pleistocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of Black Buttes
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Black Buttes (middle Pleistocene); number of samples of this unit = 5; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of Coleman Pinnacle
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Coleman Pinnacle (middle Pleistocene); number of samples of this unit = 2; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of Cougar Divide
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Cougar Divide (middle Pleistocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of Forest Divide
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Forest Divide (middle Pleistocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of Lava Divide
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Lava Divide (middle Pleistocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of present-day cone
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of present-day Mount Baker stratovolcano (Holocene and late Pleistocene; number of samples of this unit = 5; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of Swift Creek
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of Swift Creek (late Pleistocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:andesite of The Portals
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Andesite of The Portals (late Pleistocene); number of samples of this unit = 4; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:basalt of Lake Shannon
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Basalt of Lake Shannon (late Pleistocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:basalt of Sulphur Creek
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Basalt of Sulphur Creek (Holocene); number of samples of this unit = 2; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: MB:misc. lava-flow remnants
          Enumerated_Domain_Value_Definition: Rocks of the Mount Baker volcanic center (Holocene and Pleistocene): Miscellaneous lava-flow remnants (Pleistocene): remnant in upper Thompson Creek; remnant on southwest slope of Lookout Mountain; number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value Metagabbro intrusions
          Enumerated_Domain_Value_Definition: Gabbroic intrusions (Mesozoic and Paleozoic); number of samples of this unit = 7; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Metatonalite intrusions
          Enumerated_Domain_Value_Definition: Tonalitic intrusions (Mesozoic and Paleozoic); number of samples of this unit = 6; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Gabbroic intrusions
          Enumerated_Domain_Value_Definition: Gabbroic intrusions (Early Cretaceous?); number of samples of this unit = 2; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Mineral Mountain pluton
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Mineral Mountain pluton (Miocene); number of samples of this unit = 24; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Misc. gabbros and diorites
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Miscellaneous gabbros and diorites (Oligocene?)-; number of samples of this unit = 19; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Misc. granodiorite intrusions
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Pliocene and Miocene): Miscellaneous granodiorite intrusions (Pliocene and/or Miocene); number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Mt Sefrit Gabbronorite
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Mount Sefrit Gabbronorite of Tepper and others (1993) (Miocene); number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Napeequa Schist
          Enumerated_Domain_Value_Definition: Napeequa Schist (Middle Eocene to Late Cretaceous); number of samples of this unit = 57; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Nooksack Formation
          Enumerated_Domain_Value_Definition: Nooksack Formation (Early Cretaceous to Middle Jurassic): Argillite and sandstone; Thick-bedded sandstone and argillite; Grit and thick-bedded sandstone; and Volcanic-rich conglomerate and sandstone; number of samples of this unit =38; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Nooksack Formation: Wells Creek Member
          Enumerated_Domain_Value_Definition: Nooksack Formation (Early Cretaceous to Middle Jurassic): Wells Creek Volcanic Member; number of samples of this unit = 7; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Older sandstone and conglomerate
          Enumerated_Domain_Value_Definition: LATE OROGENIC  AND POST OROGENIC DEPOSITS: Older sandstone and conglomerate (age uncertain); number of samples of this unit = 18; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Orthogneiss of Alma Creek
          Enumerated_Domain_Value_Definition: Plutons of the granodioritic group: Orthogneiss of Alma Creek (Middle Eocene to Late Cretaceous); number of samples of this unit = 2; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Perry Cr. phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Perry Creek phase (Miocene and Oligocene); number of samples of this unit = 44; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/

         Enumerated_Domain:
          Enumerated_Domain_Value: Perry Cr. Phase; tectonized
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE SNOQUALMIE FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Perry Creek phase (Miocene and Oligocene): tectonized tonalite; number of samples of this unit = 4; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/

         Enumerated_Domain:
          Enumerated_Domain_Value: Phyllite and sch of Little Jack Mtn
          Enumerated_Domain_Value_Definition: Phyllite and schist of Little Jack Mountain (Middle Eocene to Late Cretaceous); number of samples of this unit = 33; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Pocket Peak phase
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Pocket Peak phase (Oligocene); number of samples of this unit = 17; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Q.di and q.monzodi. of Icy Pk
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Quartz diorite and quartz monzodiorite of Icy Peak; number of samples of this unit = 16; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Q.monz. and gr. of Nooksack cirq
          Enumerated_Domain_Value_Definition: : INTRUSIVE ROCKS OF CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Quartz monzonite and granite of Nooksack cirque (Pliocene); number of samples of this unit = 9; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Q.monzodiorite of Redoubt Cr.
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Quartz monzodiorite of Redoubt Creek (Miocene); number of samples of this unit = 17; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Rocks of Kulshan caldera
          Enumerated_Domain_Value_Definition: Rocks of Kulshan caldera (early Pleistocene): Rhyodacite lava flows, domes, dikes and shallow intrusions and Ignimbrite of Swift Creek; number of samples of this unit = 15; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Ruby Cr Heterogeneous Plutonic Belt
          Enumerated_Domain_Value_Definition: Ruby Creek Heterogeneous Plutonic Belt of Misch (1966) (Middle Eocene to Late Cretaceous); number of samples of this unit = 10; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Ruth Cr. pluton
          Enumerated_Domain_Value_Definition: : INTRUSIVE ROCKS OF CASCADE PASS FAMILY: Rocks of the Chilliwack composite batholith (Miocene and Oligocene): Ruth Creek pluton (Miocene); number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Semisch. and phyllite of Mount Josephene
          Enumerated_Domain_Value_Definition: Shuksan nappe: Semischist and phyllite of Mount Josephine (Early Cretaceous?); number of samples of this unit = 13; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Shuksan Greenschist
          Enumerated_Domain_Value_Definition: Shuksan nappe: Shuksan Greenschist (Early Cretaceous); number of samples of this unit = 13; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Silesia Cr. Pluton
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Silesia Creek pluton (Oligocene); number of samples of this unit = 5; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: ultramafic rock
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Ultramafic rocks; number of samples of this unit = 6; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: banded biot. Gneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Banded gneiss, mostly biotite gneiss; number of samples of this unit = 56; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: banded hrnbl. Gneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Banded gneiss, mostly amphibole gneiss and amphibolite; number of samples of this unit = 28; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: granite pegmatite
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Granite pegmatite: amphibolite screens; number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: lineated orthogneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss; number of samples of this unit = 12; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: mafic orthogneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss: Mafic othogneiss; number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: mafic migmatite
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss: Mafic migmatite; number of samples of this unit = 1; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: orthogneiss
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss:  number of samples of this unit = 67; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skagit: orthogneiss of the Needle
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Skagit Gneiss Complex (Middle Eocene to Late Cretaceous): Orthogneiss of The Needle; number of samples of this unit = 4; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Skymo Complex
          Enumerated_Domain_Value_Definition: Skymo Complex of Wallace (1976) (Middle Eocene to Late Cretaceous); number of samples of this unit = 36; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Slate of Rinker Ridge
          Enumerated_Domain_Value_Definition: Slate of Rinker Ridge (Cretaceous to Late Jurassic); number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Stitching: orthogneiss of Haystack Creek
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Plutons of the tonalitic group: Orthogneiss of Haystack Creek (Middle Eocene to Late Cretaceous); number of samples of this unit = 11; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Stitching: orthogneiss of Marble Creek
          Enumerated_Domain_Value_Definition: Terrane overlap units and stitching plutons: Plutons of the tonalitic group: Orthogneiss of Marble Creek (Middle Eocene to Late Cretaceous); number of samples of this unit = 6; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Tonalite of Maiden Lk.
          Enumerated_Domain_Value_Definition: INTRUSIVE ROCKS OF THE INDEX FAMILY: Rocks of the Chilliwack composite batholith (Oligocene): Tonalite of Maiden Lake; number of samples of this unit = 3; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Volcanic rocks of Big Bosom Buttes
          Enumerated_Domain_Value_Definition: Volcanic rocks of Big Bosom Buttes (Oligocene): Breccia; Dacite tuff; and Monolithologic granite breccia; number of samples of this unit = 24; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Volcanic rocks of Mt. Rahm
          Enumerated_Domain_Value_Definition: Volcanic rocks of Mount Rahm (Oligocene); number of samples of this unit = 8; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
         Enumerated_Domain:
          Enumerated_Domain_Value: Volcanic rocks of Pioneer Ridge
          Enumerated_Domain_Value_Definition: Volcanic rocks of Pioneer Ridge (Oligocene): Dacite flows and Mudflow breccia; number of samples of this unit = 10; for description see downloadable pdf of Description of Map Units: http://pubs.usgs.gov/imap/i2660/
    Attribute:
      Attribute_Label: COUNTY2
Attribute_Definition: County in Washington State where sample collected
      Attribute_Definition_Source: Author
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: what
          Enumerated_Domain_Value_Definition: Whatcom County
      Attribute_Domain_Values:
         Enumerated_Domain:
          Enumerated_Domain_Value: Skag
          Enumerated_Domain_Value_Definition: Skagit County
Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Database Coordinator
          Contact_Organization: U.S. Geological Survey
        Contact_Address:
          Address_Type: mailing address
          Address: 345 Middlefield Rd., M/S 973
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025
          Country: USA
        Contact_Voice_Telephone: 650-329-4935
        Contact_Facsimile_Telephone: 650-329-4936
        Contact_Electronic_Mail_Address: kwheeler@usgs.gov
        Contact_Instructions:
    Resource_Description: USGS Miscellaneous Investigations Series I-2660 and USGS Data Series, DS-205 consists of both traditional geologic map products and ARC/INFO format geospatial databases.  Furthermore, the traditional geologic map products (map sheets and pamphlets) can be obtained either as paper or as PDF files.
    Distribution_Liability: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.  Although this publication has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review.  Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
    Standard_Order_Process:
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: Mount Baker geologic map as a PDF file
          Format_Specification:Adobe Acrobat Document
          Format_Information_Content: PDFs (2 files) of geologic map and cross sections, correlation chart, generalized geologic map,  and maps of previous work and sources of data 
Transfer_Size: 21.6 MB
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address: 
                Network_Resource_Name: http://pubs.usgs.gov/imap/i2660/
       Digital_Form:
        Digital_Transfer_Information:
Format_Name:accompanying pamphlet  as a PDF file
Format_Specification:Adobe Acrobat Document
          Format_Information_Content: Introduction, Acknowledgements, Summary of Geologic History, expanded description of rock units, tables, and reference list
          Transfer_Size: 732 KB
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:                 
                Network_Resource_Name http://pubs.usgs.gov/imap/i2660/
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: mbcovers2.tar.gz
          Format_Version_Number: 1
          Format_Version_Date: 2006
          Format_Specification: ARC/INFO v. 7.1.1
          Format_Information_Content: 7 ARC/INFO export (.e00) files.
          File_Decompression_Technique: TAR and gzip (see the readme  for more information about TAR and gzip).
          Transfer_Size: 4.2 MB
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address: 
                Network_Resource_Name: http://pubs.usgs.gov/ds
Fees: No fees for digital forms of the report.
      Ordering_Instructions: Digital files (both PDFs and database files) can be obtained on-line as described above at the publication web-site, or by sending a request to the Database Coordinator at the address shown above.
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: USGS Information Services
        Contact_Address:
          Address_Type: mailing address
          Address: Box 25286, Denver Federal Center
          City: Denver
          State_or_Province: CO
          Postal_Code: 80225-0046
          Country: USA
        Contact_Voice_Telephone: (303) 202-4200
        Contact_Voice_Telephone: 1-888-ASK-USGS
        Contact_Facsimile_Telephone: (303) 202-4695
        Contact_Electronic_Mail_Address: infoservices@usgs.gov
        Hours_of_Service:
        Contact_Instructions:
    Resource_Description: USGS Miscellaneous Investigations I-2660 
and USGS Data Series consist of both traditional geologic map 
products and ARC/INFO format geospatial databases.  Furthermore, 
the traditional geologic map products (map sheets and pamphlets) 
can be obtained either as paper or as digital files.
    Distribution_Liability: Any use of trade, product, or firm 
names is for descriptive purposes only and does not imply 
endorsement by the U.S. Government.  Although this publication has 
been subjected to rigorous review and is substantially complete, 
the USGS reserves the right to revise the data pursuant to further 
analysis and review.  Furthermore, it is released on condition 
that neither the USGS nor the United States Government may be held 
liable for any damages resulting from its authorized or 
unauthorized use.
    Standard_Order_Process:
      Non-digital_Form: Paper copies of the map sheets and 
pamphlet can be obtained by contacting USGS Information Services 
via the contact information listed above.
Metadata_Reference_Information:
  Metadata_Date: 8/17/06
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: United States Geological Survey
        Contact_Person: Karen L. Wheeler
      Contact_Address:
        Address_Type: 345 Middlefield Rd. MS 973
        City: Menlo Park
        State_or_Province: California
        Postal_Code: 94025
      Contact_Voice_Telephone: 650-329-4935
      Contact_Facsimile_Telephone: 650-329-4936
      Contact_Electronic_Mail_Address: kwheeler@usgs.gov]
  Metadata_Standard_Name: FGDC Content Standards for Digital 
Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile