Metadata:

  Identification_Information:
    Citation:
      Citation_Information:
        Originator: Irwin, W.P.
                  
        Publication_Date: 2010
        Publication_Time: 

        Title: Reconnaissance Geologic Map of the Hyampom 15' Quadrangle, 
Trinity County, California
        Edition: 1.0
        Geospatial_Data_Presentation_Form: vector digital geologic map
          Series_Name: U.S. Geological Survey Scientific Investigations Map
          Issue_Identification: SIM 3129
        Publication_Information:
	  Publication_Place: Menlo Park, CA
	  Publisher: U.S. Geological Survey
        Other_Citation_Details: 
           Online_Linkage: http://pubs.usgs.gov/sim/3129/
               
    Description: 
      Abstract: This map database represents a digital rendition of 
Miscellaneous Field Studies Map MF-1809, 1985, by William P. Irwin (Irwin, 
1985), with various improvements and additions. It was compiled by Irwin and 
C.M. Wentworth from the MF map, supplemented by field notes and field sheets in 
the possession of W.P. Irwin. The map shows the general distribution of 
bedrock and surficial deposits of the Hyampom 15-minute quadrangle, together 
with structural data, fossil localities, and the location of prospect pits. Geologic map units are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. This geologic map has been compiled at a scale of 1:50,000, in order to be compatible with the earlier released geologic maps of the Weaverville and Hayfork 15' quadrangles (Irwin, 2009, 2010), but the reconnaissance nature of the work and the 1:62,500-scale of most of the source materials make the locational accuracy and detail in the 
map and database layers only approximate.      

      Purpose: The digital database provides the geologic map in digital 
form, permitting graphic presentation in color on a colored topographic base, 
and includes as complete and legible a set of structural data as possible. 
The original MF publication is black and white, including the base, and is 
extremely difficult to read. It should be noted that cultural information in 
the base map and the locations of prospects are current as of 1951 
(base map) or the early 1980s. The 15-minute topographic series has long been 
abandoned by the U.S. Geological Survey, but was the best regional scale for 
the map at the time it was originally prepared. Because the author 
compilations were originally prepared at 1:50,000 for later reduction to MF 
publication scale of 1:62,500, it was reasonable here to compile at 1:50,000.
           
      This database and accompanying graphic map image depict the 
distribution of geologic materials and structures at a regional (1:50,000) 
scale.  The report is intended to show the geologic framework and geologic 
history of the region, and to aid in the search for new deposits of minerals, 
particularly gold.
                
      Supplemental_Information:
 
        Procedures_Used: The digital database in this report was compiled in 
workstation Arc-Info, version 8.2,a commercial Geographic Information System 
(Environmental Systems Research Institute, Redlands, California), with 
version 3.0 of the menu interface ALACARTE (Fitzgibbon and Wentworth, 1991; 
Fitzgibbon, 1991; Wentworth and Fitzgibbon, 1991).  The files are in either 
GRID (Arc-Info raster data) format or COVERAGE (Arc-Info vector data) format.  
Coverages are stored in uncompressed ARC export format.  Arc-Info export 
files (files with the .e00 extension) can be converted into Arc-Info 
coverages in Arc-Info (see below) and can be read by some other Geographic 
Information Systems, such as MapInfo via ArcLink and ESRI's ArcMap and 
ArcView. The geologic map information was digitized on-screen over raster 
scans of paper and mylar originals. Geographic registration was accomplished 
by defining locations of the quadrangle corners in the scanned images 
relative to locations calculated in Arc-Info and warping the images to those 
constraints. The GIS data model is that of ALACARTE, which is similar to the 
single geologic map model of Gautier (1999), and SGM-like tables to define 
values of PTYPE (geologic unit labels) and LTYPE (line types) are included.

        Revisions: Please see the ASCII text file sim3129-version.txt for 
information about any revisions to this report.

        Reviews_Applied_to_Data: The 1985 MF version of this report was 
scientifically reviewed at that time. The present report has also undergone 
two scientific peer reviews, one digital database review, one review for 
conformity with geologic names policy, and review of the map graphic for 
conformity with USGS map standards. 
 
        Related_Spatial_and_Tabular_Data_Sets: This report consists of a set 
of geologic map database files (Arc-Info coverages), and graphic files of the assembled geologic map (pdf format).  The base map layer used in the preparation of the geologic map graphic was prepared by scanning a colored topographic map (paper) at a scale of 1:62,500, converting that to an RGB grid stack in Arc-Info, and applying a set of processing steps to isolate the culture, contours, and drainage in a single raster grid.

        Other_References_Cited:

Fitzgibbon, T.T., 1991, ALACARTE installation and system manual 
(version 1.0): U.S. Geological Survey, Open-File Report 91-587B.

Fitzgibbon, T.T., and Wentworth, C.M., 1991, ALACARTE user 
interface - AML code and demonstration maps (version 1.0): U.S. Geological 
Survey, Open-File Report 91-587A.
  
Gautier, D.L., 1999, Data model for single geologic maps: an 
application of the national geologic map data model, in, Soller, D.R., ed., 
Digital mapping techniques '99 -- workshop proceedings: U.S. Geological 
Survey Open-File Report 99-386.
          
Irwin, W.P., 1985, Reconnaissance geologic map of the Hyampom 
quadrangle, Trinity County, California: U.S. Geological Survey Miscellaneous 
Field Studies Map MF-1809, scale 1:62,500.
           
Irwin, W.P., 2009, Geologic Map of the Weaverville 15' quadrangle, 
Trinity County, California: U.S. Geological Survey Scientific Investigations 
Map 3095, scale 1:50,000.
          
Irwin, W.P., 2010, Reconnaissance geologic map of the Hayfork 15' 
quadrangle, Trinity County, California: U.S. Geological Survey Scientific 
Investigations Map 3119, scale 1:50,000.

Irwin, W.P. and Blome, C.D., 2004, Fossil Localities of the Rattlesnake Creek, 
Western and Eastern Hayfork, and North Fork Terranes of the Klamath Mountains: 
U.S. Geological Survey Open-File Report 2004-1094.
          
Wentworth, C.M., and Fitzgibbon, T.T., 1991, ALACARTE user manual 
(version 1.0): U.S. Geological Survey, Open-File Report 91-587B.
        

    Time_Period_of_Content:
      Time_Period_Information:
        Single_Date/Time:
          Calendar_Date: 2010
      Currentness_Reference:
        The date given is the publication date.  The information in the 
report is the most up-to-date available at the time of publication. 
   
    Status:
      Progress:  Pre-Publication
      Maintenance_and_Update_Frequency: As needed 
   
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -123.30
	East_Bounding_Coordinate: -123.25
	North_Bounding_Coordinate:  40.750
        South_Bounding_Coordinate:  40.500
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus:  None
          Theme_Keyword:  geology
	  Theme_Keyword:  bedrock geology
	  Theme_Keyword:  surficial geology
	  Theme_Keyword:  geologic history
	  Theme_Keyword:  terranes
	  Theme_Keyword:  structural data
	  Theme_Keyword:  prospect
	  Theme_Keyword:  Klamath Mountains
	  Theme_Keyword:  Hyampom
	  Theme_Keyword:  North Fork terrane
	  Theme_Keyword:  Eastern Hayfork terrane
	  Theme_Keyword:  Western Hayfork terrane
	  Theme_Keyword:  Ironside Mountain batholith
	  Theme_Keyword:  Rattlesnake Creek terrane
	  Theme_Keyword:  Western Jurassic terrane
	  Theme_Keyword:  Pickett Peak terrane
	  Theme_Keyword:  Weaverville Formation
	  Theme_Keyword:  Great Valley sequence
	  Theme_Keyword:  Great Valley overlap assemblage
	  Theme_Keyword:  ultramafic
	  Theme_Keyword:  limestone

      Place:
        Place_Keyword_Thesaurus:  None
        Place_Keyword: United States of America
	Place_Keyword: California
	Place_Keyword: Trinity County
	Place_Keyword: Town of Hayfork

      Stratum:
        Stratum_Keyword_Thesaurus:  None
        Stratum_Keyword: Alluvium 
        Stratum_Keyword: Terrace deposits
        Stratum_Keyword: Landslide deposits
        Stratum_Keyword: Old alluvium
        Stratum_Keyword: Weaverville Formation
        Stratum_Keyword: Great Valley sequence
        Stratum_Keyword: Eastern Hayfork terrane
        Stratum_Keyword: Western Hayfork terrane
        Stratum_Keyword: Hayfork Bally Meta-andesite
        Stratum_Keyword: Ironside Mountain batholith
        Stratum_Keyword: Rattlesnake Creek terrane
        Stratum_Keyword: Pickett Peak terrane

      Temporal:
        Temporal_Keyword_Thesaurus:  None
        Temporal_Keyword: Quaternary
        Temporal_Keyword: Tertiary
        Temporal_Keyword: Mesozoic
        Temporal_Keyword: Cretaceous
        Temporal_Keyword: Jurassic
        Temporal_Keyword: Triassic
        Temporal_Keyword: Permian
        Temporal_Keyword: Mississippian
        Temporal_Keyword: Devonian
        Temporal_Keyword: Ordovician
        Temporal_Keyword: Pliensbachian
        
  
    Access_Constraints:  None 
   
    Use_Constraints:
      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 1:50,000 means that higher resolution 
information is not present in the dataset; in fact, even a scale of 1:50,000 
suggests higher resolution than is present, given the reconnaissance nature 
of the mapping and compilation largely from 1:62.500 materials.  Plotting at 
scales larger than 1:50,000-1:62,500 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.
   
   
    Point_of_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: USGS Earthquake Hazards Team
          Contact_Person: W. Porter Irwin
        Contact_Address:
          Address_Type: mailing address
          Address: 345 Middlefield Road, MS 977
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025
          Country: USA
 
Browse_Graphic:
      Browse_Graphic_File_Name:
            sim3129-map.pdf
      Browse_Graphic_File_Description:
        A PDF representation of the geologic map (1:50,000), map explanation, 
and terrane map, optimized for on-screen viewing.  xx megabytes.
      Browse_Graphic_File_Type: PDF
  
    Data_Set_Credit: The original geologic mapping was done in the field by 
      W. Porter during the period 1972-1984. OTHER CREDITS AND ACKNOWLEDGEMENTS
      Preparation of the digital map database (GIS) and digital cartography by
      W.P. Irwin and C.M. Wentworth (2009). 
     
    Security_Information:
      Security_Classification_System: None
      Security_Classification:  Unclassified
      Security_Handling_Description: None
  
    Native_Data_Set_Environment: Windows XP, Arc-Info version 8.1
  
    Cross_Reference:
      Citation_Information:
        Originator: Irwin, William P.
        Publication_Date: 1984
        Title: Reconnaissance geologic map of the Hyampom quadrangle, Trinity 
County, 
               California
        Geospatial_Data_Presentation_Form: Paper map
        Series_Information:
          Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
          Issue_Identification: MF-1809
        Other_Citation_Details: 1 sheet, scale 1:62,500.  This earlier black 
and white map is superceded by the present report.
   
  Data_Quality_Information:
    Attribute_Accuracy:
      Attribute_Accuracy_Report:  See Entity_Attribute_Information
      Quantitative_Attribute_Accuracy_Assessment:
        Attribute_Accuracy_Value:  See Explanation
        Attribute_Accuracy_Explanation: Attribute accuracy is described, 
where present, with each attribute defined in the Entity and Attribute 
Section.
  
    Logical_Consistency_Report:  Polygon and chain-node topology present
  
    Completeness_Report: The report is a general purpose geologic map that 
describes the surficial deposits and bedrock geology at 1:50,000 scale.  
Small limestone bodies mappable only at larger scale are represented by 
points (sim3129-pts) and map symbols. The detail of field mapping was of 
reconnaissance quality; all geologic mapping can be refined by more detailed 
field work and/or examination of artificial excavations.
  
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report: Well located data items are 
intended to have a horizontal positional accuracy within about 0.5 mm at 
1:50,000 scale, or about 30 meters on the ground.  The general positional 
accuracy of each line in the database is indicated within the LTYPE field in 
the Arc Attribute Table (see below).  Points in the database are generally 
considered to be similarly well located.  The position of each data item is 
located relative to the USGS topographic base map, and any locational 
inaccuracies in the base map are therefore inherent in the geologic locations 
as well.
   
      Vertical_Positional_Accuracy:
        Vertical_Positional_Accuracy_Report: No vertical positional data is 
recorded.
   
    Lineage: See Supplemental_Information
  
      Process_Step:
        Process_Description: The geologic map information was digitized on-
screen over raster scans of paper originals. Geographic registration was 
accomplished by defining locations of the quadrangle corners in the scanned 
images relative to locations calculated in Arc-Info and warping the images to 
those constraints. The map graphic image itself was initially prepared in 
ArcPlot, imported into Adobe Illustrator and there somewhat modified and 
supplemented by collar and explanatory material.

    Cloud_Cover: 
        Not relevant
  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method:  Vector
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type:  Point
        SDTS_Point_and_Vector_Object_Type:  String
        SDTS_Point_and_Vector_Object_Type:  GT-polygon composed of chains
 
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Planar:
        Grid_Coordinate_System:
          Grid_Coordinate_System_Name:
          Albers Conic Equal-Area
        Planar_Coordinate_Information:
          Planar_Coordinate_Encoding_Method: coordinate pair
          Coordinate_Representation:
            Abscissa_Resolution: 1.0
            Ordinate_Resolution: 1.0
          Planar_Distance_Units: METERS
      Geodetic_Model:
        Horizontal_Datum_Name:            NAD83
        Ellipsoid_Name:                   Clarke 1866
        Semi-major_Axis:                  6378206.4
        Denominator_of_Flattening_Ratio:  294.98
        Xshift:                           0.0000000000
        Yshift:                           0.0000000000 
        1st standard parallel:            34 00 00
	2nd standard parallel:             40 30 00	
        longitude of central meridian:   -122 52 30.000 
        latitude of projection's origin:  40 30  0.000

  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: SIM3129-GEOL.PAT
        Entity_Type_Definition: Attribute table of SIM3129-GEOL.
        Entity_Type_Definition_Source: Arc-Info
      Attribute:
        Attribute_Label:  -
        Attribute_Definition: Attribute table of SIM3129-GEOL.
        Attribute_Definition_Source: Arc-Info
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value:  -
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: AREA
        Attribute_Definition: Area of poly/region in square coverage units
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Positive real numbers
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: PERIMETER
        Attribute_Definition: Perimeter of poly/region in coverage units
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Positive real numbers
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label:  SIM3129-GEOL#
        Attribute_Definition: Internal feature number
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label:  SIM3129-GEOL-ID
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Set equal to SIM3129-GEOL#
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label: PTYPE
        Attribute_Definition: Geologic unit label 
        Attribute_Definition_Source: author
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Jdi
            Enumerated_Domain_Value_Definition: Middle Jurassic Ironside Mountain batholith and related plutons, mostly monzodiorite but also includes quartz diorite and minor amounts of gabbro and pyroxenite, Western Hayfork terrane
            Enumerated_Domain_Value_Definition_Source: author  
          Enumerated_Domain:
            Enumerated_Domain_Value: Jmsv
            Enumerated_Domain_Value_Definition: Middle Jurassic Hayfork Bally Meta-andesite, consisting of layered mafic volcanogenic rocks that are probably deposits of an oceanic volcanic arc, Western Hayfork terrane
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: JTrPrc
            Enumerated_Domain_Value_Definition: Middle Jurassic to Permian? melange, a highly dismembered ophiolite and melange, Rattlesnake Creek terrane
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: rcs
            Enumerated_Domain_Value_Definition: Jurassic(?) detrital sedimentary rocks consisting of well-bedded slaty rocks that at least locally resemble the Galice(?) Formation, Rattlesnake Creek terrane; may be tectonic inliers or fault slices of Western Hayfork terrane.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: Ks
            Enumerated_Domain_Value_Definition: Lower Cretaceous Great Valley 
sequence, consisting of firmly consolidated mudstone, sandstone, and 
conglomerate, with a local coal bed that has been mined.
            Enumerated_Domain_Value_Definition_Source: author
Enumerated_Domain:
            Enumerated_Domain_Value: Ksfm
            Enumerated_Domain_Value_Definition: Early Cretaceous South Fork Mountain Schist, consisting mostly of schistose metasedimentary rocks, Pickett Peak terrane.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: Jca
            Enumerated_Domain_Value_Definition: Middle Jurassic chert and argillite unit that consists of thin-bedded radiolarian chert locally interlayered with argillite and meta-andesite. Western Hayfork terrane
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: Jg
            Enumerated_Domain_Value_Definition: Late Jurassic Galice(?)Formation, consisting of mildly slaty to semischistose mudstone, graywacke, and conglomerate. Western Jurassic terrane
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: Jp
            Enumerated_Domain_Value_Definition: Jurassic? plutonic rocks that range from diorite to granite, and may include some intermediate to silicic volcanic rocks.
            Enumerated_Domain_Value_Definition_Source: author 
          Enumerated_Domain:
            Enumerated_Domain_Value: Qal
            Enumerated_Domain_Value_Definition: Holocene and(or) Pleistocene 
younger alluvium.
            Enumerated_Domain_Value_Definition_Source: author  
          Enumerated_Domain:
            Enumerated_Domain_Value: Qls
            Enumerated_Domain_Value_Definition: Holocene and (or) Pleistocene 
landslides
            Enumerated_Domain_Value_Definition_Source: author  
          Enumerated_Domain:
            Enumerated_Domain_Value: Qoal
            Enumerated_Domain_Value_Definition: Pleistocene older 
alluvium, associated with topographically high remnants of old land surfaces
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: Qt
            Enumerated_Domain_Value_Definition: Holocene and (or) Pleistocene terrace deposits.
            Enumerated_Domain_Value_Definition_Source: author 
          Enumerated_Domain:
            Enumerated_Domain_Value: Qos
            Enumerated_Domain_Value_Definition: Pleistocene old land surface.
            Enumerated_Domain_Value_Definition_Source: author 

          Enumerated_Domain:
            Enumerated_Domain_Value: TrPsv
            Enumerated_Domain_Value_Definition: Triassic and Permian 
melange of slaty argillite and other rocks, including chert and volcaniclastic rocks, Eastern Hayfork terrane

            Enumerated_Domain_Value_Definition_Source: author  
          Enumerated_Domain:
            Enumerated_Domain_Value: Tw
            Enumerated_Domain_Value_Definition: Miocene and (or) Oligocene 
Weaverville Formation, consisting of weakly consolidated nonmarine sandstone, conglomerate, and clay and tuff; lignitic coal beds present locally. 
            Enumerated_Domain_Value_Definition_Source: author  
       
      Entity_Type:
        Entity_Type_Label:  SIM3129-GEOL.AAT
        Entity_Type_Definition: Attribute table of SIM3129-GEOL.
        Entity_Type_Definition_Source: Arc-Info
      Attribute:
        Attribute_Label:  -
        Attribute_Definition: Attribute table of SIM3129-GEOL.
        Attribute_Definition_Source: Arc-Info
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value:  -
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: FNODE#
        Attribute_Definition: Internal number of from-node
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sequential unique positive integer

            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: TNODE#
        Attribute_Definition: Internal number of to-node
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: LPOLY#
        Attribute_Definition: Internal number of poly to left of arc
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value:  Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: RPOLY#
        Attribute_Definition: Internal number of poly to right of arc
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value:  Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: LENGTH
        Attribute_Definition: Length of arc in coverage units
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Positive real numbers
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: SIM3129-GEOL#
        Attribute_Definition: Internal feature number
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: SIM3129-GEOL-ID
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Set equal to SIM3129-GEOL#
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label: LTYPE
        Attribute_Definition: The type of geologic or geographic feature 
denoted by a line in the database.
        Attribute_Definition_Source: author
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: contact, approx. located 
            Enumerated_Domain_Value_Definition: Boundary between two mapped 
units that retains the original depositional or intrusive relationship (i.e. 
not faulted).  The contact has not been observed, so it is not well located 
as described in Positional_Accuracy, but the location is constrained to be 
within about 2.5 mm at map scale (1:50,000) or within about 125 meters on the 
ground.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: contact, inferred, queried
            Enumerated_Domain_Value_Definition: Boundary between two mapped units that retains the original depositional or intrusive relationship (i.e. not faulted).  The contact has not been observed, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 6 mm at map scale (1:50,000) or within about 300 meters on the ground.  The existence of the contact is inferred from structural and stratigraphic relationships observed nearby.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: fault, approx. located
            Enumerated_Domain_Value_Definition: Structural boundary between 
mapped units or structural discontinuity within a mapped unit that has 
experienced relative offset between the rock bodies on either side of the 
fault. The contact has not been observed, so it is not well located as 
described in Positional_Accuracy, but the location is constrained to be 
within about 2.5 mm at map scale (1:50,000) or within about 125 meters on the 
ground.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: fault, concealed
            Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault is overlain by water or surficial deposits, so it is not well-located as described in Positional_Accuracy, but is constrained to be within about 6 mm at map scale (1:62,500) or within about 300 meters on the ground.              
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: fault, inferred, queried
            Enumerated_Domain_Value_Definition: Structural boundary between 
mapped units or structural discontinuity within a mapped unit that has 
experienced relative offset between the rock bodies on either side of the 
fault. The fault has not been observed, so it is not well located as described in Positional_Accuracy, but the location is constrained to be within about 6 mm at map scale (1:50,000) or within about 300 meters on the ground.  The existence of the contact is inferred from structural and stratigraphic relationships observed nearby.
            Enumerated_Domain_Value_Definition_Source: author

          Enumerated_Domain:
            Enumerated_Domain_Value: fault, well located
            Enumerated_Domain_Value_Definition: Structural boundary between 
mapped units or structural discontinuity within a mapped unit that has 
experienced relative offset between the rock bodies on either side of the 
fault. The fault has been observed or is closely constrained, so the location 
is constrained to be within about 0.5 mm at 1:50,000 scale, or about 30 
meters on the ground.
            Enumerated_Domain_Value_Definition_Source: author         
          Enumerated_Domain:
            Enumerated_Domain_Value: map boundary
            Enumerated_Domain_Value_Definition: Boundary of the Hyampom 
quadrangle.  Determined by computation in ArcInfo, and therefore the location 
is well located as described in Positional_Accuracy
            Enumerated_Domain_Value_Definition_Source: author

  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: SIM3129-ATTS.PAT
        Entity_Type_Definition: Attribute table of SIM3129-ATTS.
        Entity_Type_Definition_Source: Arc-Info
      Attribute:
        Attribute_Label:  -
        Attribute_Definition: Attribute table of SIM3129-ATTS.
        Attribute_Definition_Source: Arc-Info
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value:  -
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: AREA
        Attribute_Definition: Degenerate area of point
        Attribute_Definition_Source: Assigned
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 0
            Enumerated_Domain_Value_Definition: No area for points
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label: PERIMETER
        Attribute_Definition: Degenerate perimeter of point
        Attribute_Definition_Source: Assigned
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 0
            Enumerated_Domain_Value_Definition: No perimeter for points
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  SIM3129-ATTS#
        Attribute_Definition: Internal feature number
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label:  SIM3129-ATTS-ID
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Calculated to equal SIM3129-
ATTS#
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label: PTTYPE
        Attribute_Definition: The type of planar feature that was observed at 
this point.
        Attribute_Definition_Source: author  
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: bedding, inclined
            Enumerated_Domain_Value_Definition: The orientation of inclined 
sedimentary layers was measured at this point.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: cleavage, inclined
            Enumerated_Domain_Value_Definition: The orientation of inclined 
rock cleavage was measured at this point.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: foliation, inclined
            Enumerated_Domain_Value_Definition: The orientation of inclined 
metamorphic foliation was measured at this point.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: foliation, vertical
            Enumerated_Domain_Value_Definition: The orientation of vertical 
metamorphic foliation was measured at this point.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: joint, inclined
            Enumerated_Domain_Value_Definition: The orientation of an 
inclined joint was measured at this point.
            Enumerated_Domain_Value_Definition_Source: author
          Enumerated_Domain:
            Enumerated_Domain_Value: joint, vertical
            Enumerated_Domain_Value_Definition: The orientation of a vertical 
joint was measured at this point.
            Enumerated_Domain_Value_Definition_Source: author    
      Attribute:
        Attribute_Label: DIP
        Attribute_Definition: The inclination of the planar structure 
measured in degrees down from the horizontal. The dip of horizontal planar 
features is recorded as 0.
        Attribute_Definition_Source: author
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 90
        Attribute_Units_of_Measure: degrees
        Attribute_Measurement_Resolution: 1
      Attribute:
        Attribute_Label: STRIKE
        Attribute_Definition: The orientation of a horizontal line in an 
inclined planar structure measured in degrees clockwise from north. The 0 
strike recorded for horizontal planar features (see PTTYPE) is meaningless.
        Attribute_Definition_Source: author
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 359
        Attribute_Units_of_Measure: degrees
        Attribute_Measurement_Resolution: 1

  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: SIM3129-LINS.PAT
        Entity_Type_Definition: Attribute table of SIM3129-LINS.
        Entity_Type_Definition_Source: Arc-Info
      Attribute:
        Attribute_Label:  -
        Attribute_Definition: Attribute table of SIM3129-LINS.
        Attribute_Definition_Source: Arc-Info
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value:  -
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: AREA
        Attribute_Definition: Degenerate area of point
        Attribute_Definition_Source: Assigned
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 0
            Enumerated_Domain_Value_Definition: No area for points
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label: PERIMETER
        Attribute_Definition: Degenerate perimeter of point
        Attribute_Definition_Source: Assigned
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 0
            Enumerated_Domain_Value_Definition: No perimeter for points
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  SIM3129-LINS#
        Attribute_Definition: Internal feature number
        Attribute_Definition_Source: Computed

        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label:  SIM3129-LINS-ID
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Calculated to equal SIM3129-
ATTS#
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label: PTTYPE
        Attribute_Definition: The type of linear feature that was observed at 
this point.
        Attribute_Definition_Source: author  
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: folds, minor, inclined
            Enumerated_Domain_Value_Definition: direction and axial plunge of 
one or more local folds measured at this point
            Enumerated_Domain_Value_Definition_Source: author 
     Attribute:
        Attribute_Label: DIP
        Attribute_Definition: The dip or plunge of linear feature (direction 
of dip, fold axis) measured in degrees down from horizontal. The dip of 
horizontal features is recorded as 0. 
        Attribute_Definition_Source: author
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 90
        Attribute_Units_of_Measure: degrees
        Attribute_Measurement_Resolution: 1
      Attribute:
        Attribute_Label: STRIKE
        Attribute_Definition: The horizontal orientation of the linear 
feature (direction of dip, fold axis) measured in degrees clockwise from 
north.
        Attribute_Definition_Source: author
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 359
        Attribute_Units_of_Measure: degrees
        Attribute_Measurement_Resolution: 1 

  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: SIM3129-FOSL.PAT
        Entity_Type_Definition: Attribute table of SIM3129-FOSL.
        Entity_Type_Definition_Source: Arc-Info
      Attribute:
        Attribute_Label:  -
        Attribute_Definition: Attribute table of SIM3129-FOSL.
        Attribute_Definition_Source: Arc-Info
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value:  -
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label: AREA
        Attribute_Definition: Degenerate area of point
        Attribute_Definition_Source: Assigned
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 0
            Enumerated_Domain_Value_Definition: No area for points
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label: PERIMETER
        Attribute_Definition: Degenerate perimeter of point
        Attribute_Definition_Source: Assigned
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 0
            Enumerated_Domain_Value_Definition: No perimeter for points
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  SIM3129-FOSL#
        Attribute_Definition: Internal feature number
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sequential unique positive integer
            Enumerated_Domain_Value_Definition:
            Enumerated_Domain_Value_Definition_Source:
      Attribute:
        Attribute_Label:  SIM3129-FOSL-ID
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Calculated to equal SIM3129-
FOSL#
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  LONG
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Floating Point Number
            Enumerated_Domain_Value_Definition: Longitude of point, datum 
NAD27 (NOT 83) where listed in Irwin and Blome (2004); those points with LONG 
values of 0 were located graphically from author maps and notes (see X-COORD)
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  LAT
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Latitude of point, datum 
NAD27 (NOT 83) where listed in Irwin and Blome (2004); those points with LAT 
values of 0 were located graphically from author maps and notes (see Y-COORD)
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  MAP#
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Number used to identify 
locality on face of map graphic.
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  FIELD#
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Original field sample number.
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  X-COORD
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Longitude (NAD27) generated 
with Arc command ADDXY with coverage in geographic projection
            Enumerated_Domain_Value_Definition_Source: author
      Attribute:
        Attribute_Label:  Y-COORD
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Integer
            Enumerated_Domain_Value_Definition: Latitude (NAD27) generated 
with Arc command ADDXY with coverage in geographic projection
            Enumerated_Domain_Value_Definition_Source: author
            
    Overview_Description:
      Entity_and_Attribute_Overview: The databases in this report were 
compiled in Arc-Info, a commercial Geographic Information System 
(Environmental Systems Research Institute, Redlands, California).  Most of 
the attributes in the various attribute tables of the coverages included in 
the report are set or calculated by Arc-Info.  The exceptions are 
"coveragename"-ID, LTYPE, PTYPE, PTTYPE, STRIKE, DIP, and the several 
descriptive fields in the sim3129-fosl coverage.  "coveragename"-ID is 
required by internal policy to be sequential. This ensures the highest 
compatibility of our databases with other GISs. Therefore "coveragename"-ID 
is calculated equal to "coveragename"#, which is a unique, sequential integer 
assigned by Arc-Info to each data record.  LTYPE, PTYPE, and PTTYPE are 
author added items to the coverage AAT or PAT that are used to describe the 
type of line (LTYPE), area (PTYPE), or point (PTTYPE) being recorded.  All 
coverages with AAT and PAT present include one of these items in the data 
structure.  Each has WIDTH 35, OUTPUT 35, TYPE C.  STRIKE and DIP are author 
added items to the coverage PAT that record information about the orientation 
of planar or linear features.  Both have WIDTH 3, OUTPUT 3, TYPE I. LONG, 
LAT, X-COORD, AND Y-COORD are floating point number fields; MAP# and LOC are 
integer fields, and FIELD#, USGS#, and COMMENT are character fields.

      Entity_and_Attribute_Detail_Citation: This metadata report combined 
with the explanation on the face of the map graphic.
 
  Distribution_Information:
    Distributor: U.S. Geological Survey
      Contact_Information: Digital Form
        Contact_Person_Primary:
          Contact_Person: W. Porter Irwin
          Contact_Organization: U.S. Geological Survey
        Contact_Address:
          Address_Type: mailing address
          Address: 345 Middlefield Rd., M/S 977
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025
          Country: USA
        Contact_Instructions: Please contact by mail or website.
    Resource_Description: USGS Scientific Investigations Map 3129 consists of 
a traditional geologic map graphic, Arc-Info format geospatial databases, and 
a raster base image.  The traditional geologic map can be obtained only as a 
digital plot file.
    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 careful review 
and is substantially complete, the USGS reserves the right to revise the data 
pursuant to further analysis and review.  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: PostScript plotfile [name to be determined]
          Format_Version_Number: 1.0
          Format_Version_Date: 2002
          Format_Specification: PostScript file generated by Adobe 
Illustrator CS2
          Format_Information_Content: 1 PostScript plotfile
          File_Decompression_Technique: gzip 
          Transfer_Size: XX MB
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address: 
                Network_Resource_Name: http://pubs.usgs.gov/sim/3129

      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: PDF plotfile package, [name to be determined]
          Format_Version_Number: 1.0
          Format_Version_Date: 2002
          Format_Specification: Adobe Acrobat PDF file, v. 8.0
          Format_Information_Content: 1 PDF (Adobe Acrobat) plotfile
          File_Decompression_Technique: gzip
          Transfer_Size: XX MB
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address: 
                Network_Resource_Name: http://pubs.usgs.gov/sim/3129

      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: Digital Database package, [name to be determined]
          Format_Version_Number: 1.0
          Format_Version_Date: 2000
          Format_Specification: Arc-Info v. 8.1
          Format_Information_Content: 5 Arc-Info export (.e00) files, and the 
metadata file (this file).
          File_Decompression_Technique: TAR and gzip 
          Transfer_Size: XX MB
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address: 
                Network_Resource_Name: http://pubs.usgs.gov/sim/3129
      Fees: No fees for digital forms of the report.
      Ordering_Instructions: Digital files (both plotfiles and database 
files) can be obtained on-line as described above at the publication web-site

      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: Digital Database package, [name to be determined]
          Format_Version_Number: 1.0
          Format_Version_Date: 2000
          Format_Specification: Arc-Info v. 8.1
          Format_Information_Content: 5 Arc shape files, and the metadata 
file (this file).
          File_Decompression_Technique: TAR and gzip 
          Transfer_Size: XX MB
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address: 
                Network_Resource_Name: http://pubs.usgs.gov/sim/3129
      Fees: No fees for digital forms of the report.
      Ordering_Instructions: Digital files (both plotfiles and database 
files) can be obtained on-line as described above at the publication web-site
      
    Distributor: U.S. Geological Survey
      Contact_Information: Non-Digital Form
        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:
  
  Metadata_Reference_Information:
    Metadata_Date: 20100518
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: C.M. Wentworth
          Contact_Organization: U.S. Geological Survey
        Contact_Address:
          Address_Type: Mailing
          Address: 345 Middlefield Rd., M/S 973
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025
          Country: USA
    Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial 
Metadata
    Metadata_Standard_Version: 19940608
    Metadata_Time_Convention: Local Time
    Metadata_Security_Information:
      Metadata_Security_Classification_System: None

      Metadata_Security_Classification: Unclassified
      Metadata_Security_Handling_Description: None