Metadata:

Identification_Information:

Citation:

Citation_Information:

Originator: Douglas B. Stoeser

Originator: Gregory N. Green

Originator: Laurie C. Morath

Originator: William D. Heran

Originator: Anna B. Wilson

Originator: David W. Moore

Originator: Bradley S. Van Gosen

Publication_Date: 2005

Title:

Preliminary Integrated Geologic Map Databases for the United States

Central States: Montana, Wyoming, Colorado, New Mexico,

Kansas, Oklahoma, Texas, Missouri, Arkansas, and Louisiana,

\- The State of Montana

Edition: version 1.0

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report

Issue_Identification: 2005-1351

Publication_Information:

Publication_Place: Denver, CO

Publisher: U.S. Geological Survey

Online_Linkage: http://pubs.usgs.gov/of/2005/1351/

Larger_Work_Citation:

Citation_Information:

Originator: Douglas B. Stoeser

Originator: Gregory N. Green

Originator: Laurie C. Morath

Originator: William D. Heran

Originator: Anna B. Wilson

Originator: David W. Moore

Originator: Bradley S. Van Gosen

Publication_Date: 2005

Title:

Preliminary Integrated Geologic Map Databases for the United States

Central States: Montana, Wyoming, Colorado, New Mexico,

Kansas, Oklahoma, Texas, Missouri, Arkansas, and Louisiana.

Edition: version 1.0

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report

Issue_Identification: 1351

Publication_Information:

Publication_Place: Reston, VA

Publisher: U.S. Geological Survey

Online_Linkage: http://pubs.usgs.gov/of/2005/1351/

Description:

Abstract:

This open-file report presents the results of the USGS Mineral Resources

Program activity to compile a national-scale geologic map database to
support

national and regional level projects, including mineral resource and
geo-

environmental assessments. The only comprehensive sources of regional-
and

national-scale geologic maps are state geologic maps with scales ranging
from

1:100,000 to 1:1,000,000. Digital versions of these state maps form the
core

of what is presented here. Because no adequate geologic map exists for
the

state of Alaska, it is being compiled in regional blocks that also form
part

of this national database. It is expected that this series will
completed by

approximately the end of 2007. These maps and databases are being
released

in blocks of states or, in the case of Alaska, as compiled blocks of

1:250,000-scale quadrangles as chapters in this series. For Alaska,
formal

maps as well as databases are being published here, whereas for the

conterminous U.S. only state databases and preview graphics are
presented,

because published maps for most states already exist. For Alaska these

regional compilations will form the base for compiling a new geologic
map of

the state. As documented in Chapter A, standards for the conterminous
U.S.

are somewhat different than those for Alaska and Hawaii.

Purpose:

A primary goal of this work is to develop geologic map datasets with

standardized structure and attribution. The database design and
standards are

documented in Chapter A of this series. The intent is that contiguous
databases

can be merged seamlessly and without any additional effort. In addition
to a

common database structure, the conterminous U.S. state databases

(the contiguous 48 states) have been fitted to a set of standard state

boundaries so that, when states are merged, they match without slivers
or

overlap. No attempt has been made to reconcile differences in mapping
across

state boundaries.

Supplemental_Information:

This database consists of five major Arc/Info GIS datasets for each
state;

\- one: geologic map with formations,

\- two: faults (where present),

\- three: dikes (where present),

\- four: miscellaneous line features (where present),

\- five: miscellaneous point features (where present).

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2005

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: none planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -116.25

East_Bounding_Coordinate: -104.00

North_Bounding_Coordinate: 49.00

South_Bounding_Coordinate: 44.25

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: geology

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: USA

Place_Keyword: Montana

Theme:

Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes,
augmented

Theme_Keyword: 3100 - Vector

Theme_Keyword: 3110 - ESRI

Theme_Keyword: 3112 - export

Theme_Keyword: 1100 - Geology

Theme_Keyword: 1101 - General

Place:

Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0

Place_Keyword: US30 = Montana

Access_Constraints: none

Use_Constraints:

This database is not meant to be used or displayed at any scale other

than 1:500,000.

Any hardcopies utilizing these data sets shall clearly indicate

their source. If the licensee has modified the data in any way

they are obligated to describe the types of modifications they

have performed on the hardcopy map. Licensee specifically agrees

not to misrepresent these data sets, nor to imply that changes they

made were approved by the U.S. Geological Survey.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Gregory N. Green

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address: MS 973, USGS, Denver Federal Center

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-5390

Contact_Electronic_Mail_Address: ggreen@usgs.gov

Data_Set_Credit:

State Geologic Map Compilation (SGMC) activity of the National Surveys
and Analysis

projects of the US Geological Survey Mineral Resources Program.

Native_Data_Set_Environment:

ARC/INFO version 8.3

ArcView 3.2

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The values of the attributes ROCKTYPE1 and ROCKTYPE2 were assigned based
on the

information in the legends of the source maps (most of which are paper).
The definitions of

these values are described in the draft document Geologic Map
Classification version 6.1

(Johnson and others); available at the following website:
http://geology.usgs.gov/dm )

Logical_Consistency_Report:

All internal polygons were checked for closure with vendor software and
on hard copy plots.

Overshoots and undershoots have been deleted or corrected as
appropriate.

Completeness_Report:

Bodies of water are classified as water, and the geologic units
underlying them are not included in

this coverage.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The geologic map was digitized from compilations ranging in scale from
1:1,000,000 to 1:100,000

and is an accurate representation of the source maps. It is intended to
be used at scales

ranging from 1:1,000,000 to 1:500,000. Display at significantly larger
scales may produce small

errors in locations of contacts or faults relative to features contained
in other data sets.

Accuracy of Montana state boundary and those arcs intersecting it: The
accuracy of the state

boundary arcs is based on the 1:100000 scale original data used to
produce this boundary.

(Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State
Boundaries of the

Conterminous United States: U.S. Geological Survey, unpublished

(see metadata file: st100kmeta.txt, Chapter A))

Those internal arcs intersecting the state boundary were extended or
shortened as needed to

complete polygons, possibly creating a small amount of error.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Ross, C.P

Originator: Andres, D.A.

Originator: Witkind, I.J.

Publication_Date: 1955

Title: Geologic map of Montana

Geospatial_Data_Presentation_Form: map

Source_Scale_Denominator: 5000000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1955

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Ross and others (1955)

Source_Contribution: Preliminary geologic map of Montana

Source_Information:

Source_Citation:

Citation_Information:

Originator: G.L. Raines

Originator: B.R. Johnson

Publication_Date: 1995

Title: Digital representation of the Montana state geologic map in
ARC/INFO export format

Geospatial_Data_Presentation_Form: map

Source_Scale_Denominator: 500000

Type_of_Source_Media: digital map

Source_Contribution: Digital geologic map of Montana

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1995

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: MT001

Source_Information:

Source_Citation:

Citation_Information:

Originator: Bruce R. Johnson

Title: 1:100,000 Scale State Boundaries of the Conterminous United
States

Geospatial_Data_Presentation_Form: vector digital data

Publication_Date: unpublished material

Source_Scale_Denominator: 100,000

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 199808

Source_Currentness_Reference: unknown

Source_Citation_Abbreviation: US001

Source_Contribution: Provided linework for state boundaries

Source_Information:

Source_Citation:

Citation_Information:

Originator: Bruce R. Johnson

Publication_Date: unpublished material

Title: Geologic Map Unit Classification, ver. 6.1

Geospatial_Data_Presentation_Form: document

Type_of_Source_Media: online; http://geology.usgs.gov/dm

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: unknown

Source_Currentness_Reference: unknown

Source_Citation_Abbreviation: Johnson Lith Class 6.1

Source_Contribution: Classification scheme used for lithology.

Process_Step:

Process_Description:

The purpose of this standardization is to allow all SGMC covers to be

seamlessly joined without any additional effort to form regional or
national

level digital maps. Note that for Alaska, the state is being compiled as
blocks

of 1:250k quadrangles that will ultimately be used to compile a new
state map.

Douglas Stoeser and Ric Wilson are co-coordinators for the overall SGMC
effort,

with Stoeser coordinating work on the mainland states and Wilson
coordinating

work for Alaska and Hawaii.

Process_Date: 2003 - 2004

Process_Step:

Process_Description:

G.N. Green obtained the digital geologic map of Montana from the
website:

http://pubs.usgs.gov/of/ofr-95-0691/

Re-projected the coverage into the following:

projection: Lambert Conformal Conic

units: meters

datum: NAD27

standard parallel 1: 33 0 0.000

standard parallel 2: 45 0 0.000

central meridian: -100 0 0.000

reference latitude: 0 0 0.000

false easting: 0.00000

false northing: 0.00000

All attributes were deleted except FORMATION.

(Note: Attributes associated with the generation of the coverages were
not deleted.

PAT - shape, area, perimeter, coverage#, and coverage-id

AAT - shape, fnode#, tnode#, lnode#, rnode#, length, coverage#, and
coverage-id)

The values from FORMATION where then calculated into a new field called
orig_label.

Process_Date: 20031223

Process_Step:

Process_Description:

The following attributes were exported from Filemaker as a comma
delimited file

map_symbol1

map_symbol2

unit_link

reference_id

unit_age

rocktype1

rocktype2

The attributes were then loaded into INFO with the following structures:

item name: orig_label

width: 12

output: 12

type: c

item name: sgmc_label

width: 16

output: 16

type: c

item name: unit_link

width: 18

output: 18

type: c

item name: source

width: 6

output: 8

type: c

item name: unit_age

width: 60

output: 60

type: c

item name: rocktype1

width: 40

output: 40

type: c

item name: rocktype2

width: 40

output: 40

type: c

Process_Date: 20040318

Process_Step:

Process_Description:

Once the .csv was loaded, it was joined in Arc/Info with the joinitem
command.

orig_label as the related item.

Process_Date: 20040106

Process_Step:

Process_Description:

Once the .pat file was correct, the .aat file was addressed. The
following items were added

to the table:

item name: arc-code

width: 3

output: 3

type: i

item name: arc-para1

width: 3

output: 3

type: i

item name: arc-para2

width: 3

output: 3

type: i

item name: source

width: 6

output: 8

type: c

Process_Date: 20031223

Process_Step:

Process_Description:

Arc-code was populated using the digital map source to tag the lines
using the AAT line type

data dictionary.

Arc-para1 was populated when additional information was available such
as upthrown side of

a fault or angle of thrusting on a fault.

Arc-para2 is a scratch field that is used mostly in Alaska.

Source was populated with code that designates the source used for the
linework; typically

the paper map.

Process_Date: 20031223

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Lambert Conformal Conic

Lambert_Conformal_Conic:

Standard_Parallel: 33

Standard_Parallel: 45

Longitude_of_Central_Meridian: -100.0

Latitude_of_Projection_Origin: 0

False_Easting: 0.00000

False_Northing: 0.00000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.01

Ordinate_Resolution: 0.01

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: mt_geol.pat

Entity_Type_Definition: Polygon attribute table for the Montana geologic
coverage.

Entity_Type_Definition_Source: ESRI

Attribute:

Attribute_Label: orig_label

Attribute_Definition: unmodified map unit symbol from source cover.

Attribute_Definition_Source: Doug Stoeser

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Qal

Enumerated_Domain_Value_Definition: Alluvium

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Qg

Enumerated_Domain_Value_Definition: Glacial drift

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Qgl

Enumerated_Domain_Value_Definition: Glacial lake deposits

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: QTi

Enumerated_Domain_Value_Definition: Terrace deposits

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tf

Enumerated_Domain_Value_Definition: Flaxville gravel

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ta

Enumerated_Domain_Value_Definition: Arikaree formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Twr

Enumerated_Domain_Value_Definition: White River formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tw

Enumerated_Domain_Value_Definition: Wasatch formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tfu

Enumerated_Domain_Value_Definition: Fort Union formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ts

Enumerated_Domain_Value_Definition: Tertiary sedimentary rocks,
undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tv

Enumerated_Domain_Value_Definition: Tertiary volcanic rocks

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tg

Enumerated_Domain_Value_Definition: Tertiary coarse-grained intrusive
rocks

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Td

Enumerated_Domain_Value_Definition: Tertiary dikes and sills

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Twc

Enumerated_Domain_Value_Definition: Willow Creek formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: TKb

Enumerated_Domain_Value_Definition: Boulder batholith and broadly
related stocks

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: TKl

Enumerated_Domain_Value_Definition: Livingston formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ksm

Enumerated_Domain_Value_Definition: St. Mary River formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Khc

Enumerated_Domain_Value_Definition: Hell Creek formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kh

Enumerated_Domain_Value_Definition: Horsethief sandstone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kfh

Enumerated_Domain_Value_Definition: Fox Hill sandstone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kb

Enumerated_Domain_Value_Definition: Bearpaw shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kjr

Enumerated_Domain_Value_Definition: Judith River formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kcl

Enumerated_Domain_Value_Definition: Claggett formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Keu

Enumerated_Domain_Value_Definition: Eagle sandstone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kvi

Enumerated_Domain_Value_Definition: Eagle sandstone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ktc

Enumerated_Domain_Value_Definition: Telegraph Creek formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Km

Enumerated_Domain_Value_Definition: Montana group, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kl

Enumerated_Domain_Value_Definition: Lennep sandstone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kdg

Enumerated_Domain_Value_Definition: Diorite and gabbro

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kv

Enumerated_Domain_Value_Definition: Cretaceous volcanic rocks

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ktm

Enumerated_Domain_Value_Definition: Two Medicine formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kp

Enumerated_Domain_Value_Definition: Pierre shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kn

Enumerated_Domain_Value_Definition: Niobrara formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kce

Enumerated_Domain_Value_Definition: Carlile shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kg

Enumerated_Domain_Value_Definition: Greenhorn formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kbf

Enumerated_Domain_Value_Definition: Belle Fourche shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ku

Enumerated_Domain_Value_Definition: Cretaceous, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kcb

Enumerated_Domain_Value_Definition: Basal part of Cody shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kc

Enumerated_Domain_Value_Definition: Colorado shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kf

Enumerated_Domain_Value_Definition: Frontier formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kmo

Enumerated_Domain_Value_Definition: Mowry shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kt

Enumerated_Domain_Value_Definition: Thermopolis shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ki

Enumerated_Domain_Value_Definition: Idaho batholith and associated
masses

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kib

Enumerated_Domain_Value_Definition: Border zone of Idaho batholith and
associated masses

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Kk

Enumerated_Domain_Value_Definition: Kootenai formation and associated
rocks

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ju

Enumerated_Domain_Value_Definition: Jurassic, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: TRu

Enumerated_Domain_Value_Definition: Triassic, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: JTR

Enumerated_Domain_Value_Definition: Jurassic and Triassic rocks,
undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Pu

Enumerated_Domain_Value_Definition: Permian, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: PAu

Enumerated_Domain_Value_Definition: Pennsylvanian, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Mu

Enumerated_Domain_Value_Definition: Mississippian, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Du

Enumerated_Domain_Value_Definition: Devonian, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ou

Enumerated_Domain_Value_Definition: Ordovician, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: CAu

Enumerated_Domain_Value_Definition: Cambrian, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: PZ

Enumerated_Domain_Value_Definition: Paleozoic rocks, undifferentiated

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAm

Enumerated_Domain_Value_Definition: Missoula group

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAnb

Enumerated_Domain_Value_Definition: North Boulder group

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAb

Enumerated_Domain_Value_Definition: Purcell basalt

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAd

Enumerated_Domain_Value_Definition: Diabase, metagabbro, and diorite and
related rocks

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAh

Enumerated_Domain_Value_Definition: Helena limestone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAe

Enumerated_Domain_Value_Definition: Empire shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAs

Enumerated_Domain_Value_Definition: Spokane shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAg

Enumerated_Domain_Value_Definition: Greyson shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAw

Enumerated_Domain_Value_Definition: Wallace Formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAn

Enumerated_Domain_Value_Definition: Newland limestone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAsi

Enumerated_Domain_Value_Definition: Siyeh limestone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCApi

Enumerated_Domain_Value_Definition: Piegan group

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAga

Enumerated_Domain_Value_Definition: Grinnell argillite

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAap

Enumerated_Domain_Value_Definition: Appekunny argillite

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAa

Enumerated_Domain_Value_Definition: Altyn limestone

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAc

Enumerated_Domain_Value_Definition: Chamberlain shale

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAr

Enumerated_Domain_Value_Definition: Ravalli group

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAp

Enumerated_Domain_Value_Definition: Prichard formation

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAne

Enumerated_Domain_Value_Definition: Neihart quartzite

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAsc

Enumerated_Domain_Value_Definition: Stillwater complex

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: pCAgs

Enumerated_Domain_Value_Definition: Pre-Belt gneiss, schist, and related
rocks

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_Label: sgmc_label

Attribute_Definition:

sgmc_label = orig_label + ;n where n= province number (n=0 if no
province number)

Attribute_Definition_Source: Doug Stoeser

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: n/a

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_label: unit_link

Attribute_Definition:

composite map label = ST + sgmc_label

This creates a unique identifier for every unit in the CONUS
(continental United States) covers.

Attribute_Definition_Source: Doug Stoeser

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: n/a

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_Label: source

Attribute_Definition: reference to the source used

Attribute_Definition_Source: Doug Stoeser

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MT001

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source:

Raines, G.L. and Johnson, B.R., 1995, Digital representation of the
Montana state geologic

map in ARC/INFO export format: U.S. Geological Survey Open File OFR-691,
scale 1:500,000

online at http://pubs.usgs.gov/of/1995/ofr-95-0691/

Attribute:

Attribute_Label: unit_age

Attribute_Definition: geologic age from the source map used.

Attribute_Definition_Source: Doug Stoeser

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Holocene

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Quaternary

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Quaternary-Tertiary

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tertiary

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Paleocene-Late Cretaceous

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tertiary-Late Cretaceous

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tertiary-Cretaceous

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Late Archean - Tertiary

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Tertiary - Archean

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Late Cretaceous

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Cretaceous

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Cretaceous(?)

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Early Cretaceous-Late Cretaceous

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Early Cretaceous

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Early Cretaceous; Jurassic

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Jurassic

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Jurassic-Triassic

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Triassic

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Paleozoic

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Permian

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Pennsylvanian

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Mississippian

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Ordovician

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Devonian

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Cambrian

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Proterozoic

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Middle-Proterozoic

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: Proterozoic; Late Cretaceous; Tertiary

Enumerated_Domain_Value_Definition: geologic age

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_Label: rocktype1

Attribute_Definition: The predominant lithology found in the formation.

Attribute_Definition_Source: unit classification

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: playa

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: alluvium

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: alluvial terrace

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: clastic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: claystone

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: fine-grained mixed clastic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: medium-grained mixed clastic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: coarse-grained mixed clastic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: glacial drift

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: mudstone

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: glaciolacustrine

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: shale

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: sandstone

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: quartzite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: carbonate

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: dolomite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: metamorphic rock

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: meta-conglomerate

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: meta-argillite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: igneous

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: volcanic rock

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: hypabyssal

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: granitoid

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: diorite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: anorthosite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: water

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_Label: rocktype2

Attribute_Definition: The second most predominant lithology in the
formation.

Attribute_Definition_Source: unit classification

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: alluvium

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: arenite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: glacial drift

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: bentonite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: carbonate

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: coal

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: fine-grained mixed clastic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: mixed fine-grained clastic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: coarse-grained mixed clastic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: conglomerate

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: mudstone

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: limestone

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: marl

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: shale

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: siltstone

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: sandstone

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: quartzite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: argillite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: meta-argillite

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: meta-conglomerate

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: metasedimentary rock

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: tuff

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: volcanic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: mixed clastic/volcanic

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: plutonic rock

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: gabbro

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source: n/a

Detailed_Description:

Entity_Type:

Entity_Type_Label: mt_geol.aat

Entity_Type_Definition: Arc attribute table for Montana geologic
coverage.

Entity_Type_Definition_Source: ESRI

Attribute:

Attribute_Label: arc-code

Attribute_Definition: Unique identifier for the line feature

Attribute_Definition_Source: AAT data dictionary, Appendix H

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1

Enumerated_Domain_Value_Definition: contact, location certain

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 2

Enumerated_Domain_Value_Definition: contact, location approximate

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 3

Enumerated_Domain_Value_Definition: contact, location inferred, queried

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 4

Enumerated_Domain_Value_Definition: normal fault, location certain

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 6

Enumerated_Domain_Value_Definition: normal fault, location inferred,
queried

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 50

Enumerated_Domain_Value_Definition: dike or sills, unspecified

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 52

Enumerated_Domain_Value_Definition: normal fault, concealed

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 101

Enumerated_Domain_Value_Definition:

thrust fault, direction of motion undefined, location certain

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 103

Enumerated_Domain_Value_Definition:

thrust fault, direction of motion undefined, location inferred

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 121

Enumerated_Domain_Value_Definition: dike or sill , mafic

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 124

Enumerated_Domain_Value_Definition: state boundary

Enumerated_Domain_Value_Definition_Source: n/a

Enumerated_Domain:

Enumerated_Domain_Value: 125

Enumerated_Domain_Value_Definition: international boundary

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_Label: arc-para1

Attribute_Definition: Used for \"decorated\" lines where additional
information is needed.

Attribute_Definition_Source: AAT data dictionary n/a

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0

Enumerated_Domain_Value_Definition: no additional information

Enumerated_Domain_Value_Definition_Source: n/a

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1

Enumerated_Domain_Value_Definition: for normal faults, upthrown side is
to the right

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_Label: arc-para2

Attribute_Definition: \"Scratch\" field used mostly in Alaska.

Attribute_Definition_Source: AAT data dictionary

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0

Enumerated_Domain_Value_Definition: no additional information

Enumerated_Domain_Value_Definition_Source: n/a

Attribute:

Attribute_Label: source

Attribute_Definition: A coded reference citation indicating source
material used.

Attribute_Definition_Source: AAT data dictionary

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MT001

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source:

Raines, G.L. and Johnson, B.R., 1995, Digital representation of the
Montana state geologic

map in ARC/INFO export format: U.S. Geological Survey Open File OFR-691,
scale 1:500,000

online at http://pubs.usgs.gov/of/1995/ofr-95-0691/

Enumerated_Domain:

Enumerated_Domain_Value: US001

Enumerated_Domain_Value_Definition: n/a

Enumerated_Domain_Value_Definition_Source:

Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State
Boundaries of the

Conterminous United States: U.S. Geological Survey, unpublished (see
metadata file:

st100kmeta.txt, Chapter A)

Overview_Description:

Entity_and_Attribute_Overview:

Coding for polygon attributes:

NAME: FEATURE:

orig_label unmodified map unit symbols from source cover

sgmc_label orig_label modified for standard geologic age symbols and an

integer code added for province

unit_link sgmc_label and a state code identifier

source reference to source of data

unit_age geologic age

rocktype1 predominant lithology

rocktype2 second most predominant lithology

Coding for arc attributes:

NAME: FEATURE:

arc-code unique integer identifier

arc-para1 used where additional information is needed

arc-para2 scratch field

source reference to source of data

Coding for point attributes:

NAME: FEATURE:

point_feature name of feature on map

source reference to source of data

Coding for dikes (special arcs) attributes:

NAME: FEATURE:

orig_label unmodified map unit symbols from source cover

sgmc_label orig_label modified for standard geologic age symbols and an

integer code added for province

arc-code unique integer identifier

dike_lith general lithology

dike_age geologic age

source reference to source of data

Entity_and_Attribute_Detail_Citation: ESRI

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey Information Services

Contact_Address:

Address_Type: mailing and physical address

Address:

U.S. Geological Survey

507 National Center

City: Reston

State_or_Province: Virginia

Postal_Code: 20192

Country: USA

Contact_Voice_Telephone:

1-888-ASK-USGS

or

1-703-648-5953

Contact_Electronic_Mail_Address: http://www.usgs.gov/contact/

Distribution_Liability:

This report is preliminary and has not been reviewed for conformity with

U.S. Geological Survey (USGS) editorial standard nor with the North
American

stratigraphic codes. Any use of trade, product, or firm names is for

descriptive purposes only and does not imply endorsement by the USGS.

Although these data have been used by the USGS and have been
successfully

imported into data base programs, no warranty, expressed or implied, is
made

by the USGS as to how successfully or accurately the data can be
imported into

any specific application software running on any specific hardware
platform.

The fact of distribution shall not constitute any such warranty, and no

responsibility is assumed by the USGS in connection therewith.

This data base GIS is not meant to be used or displayed at any scale
other than 1:500,000.

Resource_Description: USGS OFR 2005-1351

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ARC/INFO export

Format_Version_Number: 8.3

Format_Information_Content: Geologic units and structural features

File_Decompression_Technique: gzip and tar

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://pubs.usgs.gov/of/2005/1351

Fees: none

Metadata_Reference_Information:

Metadata_Date: 20041018

Metadata_Review_Date: 20041019

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Gregory N. Green

Contact_Address:

Address_Type: mailing and physical address

Address: MS 973, USGS, Denver Federal Center

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 1-303-236-5390

Contact_Electronic_Mail_Address: ggreen@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial
Metadata

Metadata_Standard_Version: FGDC-STD-001-1998