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Generalized Thermal Maturity Map of Alaska

Metadata also available as - [Questions & Answers] - [Parseable text] - [DIF]

Metadata:

Identification_Information
Spatial_Data_Organization_Information
Data_Quality_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Mark J. Johnsson

Originator: David G. Howell

Publication_Date: 1996

Title: Generalized Thermal Maturity Map of Alaska

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map
Issue_Identification: I-2494

Publication_Information:

Publication_Place: Menlo Park, CA
Publisher: U.S. Geological Survey

Online_Linkage: <http://geopubs.wr.usgs.gov/dds/dds-54/Map/>

Larger_Work_Citation:

Citation_Information:

Originator: Mark J. Johnson

Originator: Kevin R. Evans

Originator: Heather A. Marshall

Publication_Date: 1999

Title:

Thermal Maturity of Sedimentary Rocks in Alaska: Digital Resources

Edition: 1.0

Geospatial_Data_Presentation_Form: digital data

Series_Information:

Series_Name: U.S. Geological Survey Digital Data Series
Issue_Identification: DDS-54

Publication_Information:

Publication_Place: Menlo Park, CA
Publisher: U.S. Geological Survey

Online_Linkage: <http://geopubs.wr.usgs.gov/dds/dds-54/>

Keywords:

Theme:

Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
Theme_Keyword: 3400 - Graphical
Theme_Keyword: 3410 - PDF
Theme_Keyword: 3100 - Vector
Theme_Keyword: 3420 - PostScript
Theme_Keyword: 3110 - ESRI
Theme_Keyword: 3111 - coverage
Theme_Keyword: 3112 - export
Theme_Keyword: 3113 - shape

Place:

Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
Place_Keyword: US02 = Alaska

Theme:

Theme_Keyword_Thesaurus: Gateway to the Earth (USGS) draft 6
Theme_Keyword: structural geology
Theme_Keyword: stratigraphy
Theme_Keyword: faults
Theme_Keyword: folds (geologic)
Theme_Keyword: geologic maps
Theme_Keyword: rock types
Theme_Keyword: oil and gas resources

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation

Description:

Abstract:: Alska is a complex amalgamation of tectonic blocks with diverse histories. Sedimentary basins that are formed on these blocks both before amalgamation and as a result of collisions between them record the tectonic history of this complex region. Thermal-maturity data-indicators of maximum burial temperatures-provide important constraints both on basin evolution and on terrane amalgamation. To help elucidate these relations, and to provide constraints for hydrocarbon assessments, the U.S. Geological survey (USGS) has compilied thermal-maturity data from Alaska for many decades. This report is a digital release of our current understanding of thermal-maturity patters in Alaska.
Purpose:: The files in this directory are those that were used to create the Generalized Thermal Maturity Map of Alaska (USGS Miscellaneous Investigations Map I-2494), published in 1996. These files are necessary for importing the map in digital form into a Geographical Information System. Output files in several formats also are included in this directory; these can be used any time a digital version of the complete map is needed.
The map is based, in large part, on the vitrinite-reflectance (VR) and conodont color-alteration-index (CAI) data in USGS Open-File Report 92-409, an updated version of which also is included on this CD-ROM.
Supplemental_Information:: The 10 ARC/INFO coverages used to construct the map, together with the directory "INFO" (needed by ARC/INFO to support the coverages), are found in the "coverages" subdirectory. These coverages can be used by any GIS capable of importing files in ARC/INFO format.
Export version of these coverages are found in the subdirectory "exportfiles." These files can be imported into ARC/INFO with the "import" command.
Shapefile versions of 9 of the ARC/INFO coverages are found in the subdirectory "shapefiles." Each shapefile actually consists of three files, with extensions .shp, .shx., and .dbf; all are needed for importation into a GIS supporting the shapefile format.
Inset figures and text, as well as the map title, headers, and latitude-longitude ticks, were created as a separate file. This file is available in Adobe Illustrator 6.0 format (insets.ill) and in Encapsulated PostScript format (insets.eps) in the subdirectory "insetfigures."
The subdirectory "miscfiles" contains many important files needed to use these coverages in ARC/INFO or another GIS.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1996

Currentness_Reference: Publication date of the CD-ROM (1996).

Status:

Progress: Complete
Maintenance_and_Update_Frequency: Not planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -175.0
East_Bounding_Coordinate: -130.0
North_Bounding_Coordinate: 71.5
South_Bounding_Coordinate: 52.0

Access_Constraints: none

Use_Constraints: none

Browse_Graphic:

Browse_Graphic_File_Name:: <http://geopubs.wr.usgs.gov/dds/dds-54/Map/outputfiles/MapI2494.pdf>
Browse_Graphic_File_Description: PDF version of Alaska Thermal Maturity Map
Browse_Graphic_File_Type: PDF

Native_Data_Set_Environment: ARC/INFO version 7.1.1

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Mark Johnsson
Contact_Organization: Bryn Mawr College

Contact_Address:

Address_Type: mailing address
Address: Bryn Mawr College
City: Bryn Mawr
State_or_Province: PA
Postal_Code: 19010
Country: USA

Contact_Electronic_Mail_Address: johnsson@brynmawr.edu

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_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Complete chain

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Data_Quality_Information:

Logical_Consistency_Report:

The map is based, in large part, on the vitrinite-reflectance (VR) and conodont color-alteration-index (CAI) data in USGS Open-File Report 92-409, an updated version of which also is included on this CD-ROM.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Mark J. Johnsson

Originator: David G. Howell

Publication_Date: 1996

Title: Thermal Evolution of Sedimentary Basins in Alaska

Series_Information:

Series_Name: U.S. Geological Survey Bulletin
Issue_Identification: 2142

Publication_Information:

Publication_Place: Denver, CO
Publisher: U.S. Geological Survey

Online_Linkage: <http://geopubs.wr.usgs.gov/dds/dds-54/Report/Bull2142.pdf>

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1996

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Johnsson and Howell, 1996

Source_Contribution: Data to accompany thermal maturity map

Source_Information:

Source_Citation:

Citation_Information:

Originator: Johnsson, M.J.

Originator: Pawlewicz, M.J.

Originator: Harris, A.G.

Originator: Valin, Z.C.

Publication_Date: 1992

Title:

Vitrinite reflectance and conodont color alteration index data from Alaska: Data to accompany the thermal-maturity map of Alaska

Edition: 1.1

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 92-409

Other_Citation_Details: Revised 1999, packaged as part of DDS-54

Online_Linkage: <http://geopubs.wr.usgs.gov/dds/dds-54/Data/>

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 1992

Single_Date/Time:

Calendar_Date: 1999

Source_Currentness_Reference: Publication date and revision date

Source_Citation_Abbreviation: OFR 92-409

Source_Contribution:

The "data" directory contains vitrinite reflectance (VR) and conodont color-alteration-index (CAI) data in three formats: a Microsoft Excel (version 5.0) workbook, a set of four ASCII files; and a set of four files in Adobe's PDF format, also accessible through the PDF interface described above. The Excel workbook contains four spreadsheets: one each for VR data from outcrops, VR data from wells, conodont CAI data from outcrops, and conodont color alteration index data from wells. These spreadsheets are neatly formatted and will generally be easier to work with than the ASCII or PDF files, but they do require that the user own a copy of the Microsoft Excel application. The ASCII files are tab-delineated, with the first two records consisting of a title and field labels, respectively. Manipulation of the ASCII files requires a database-management, spreadsheet, or word-processing program capable of reading ASCII files.

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Transverse Mercator

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.926
Longitude_of_Central_Meridian: -100.00
Latitude_of_Projection_Origin: 0.00
False_Easting: 0
False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.025956
Ordinate_Resolution: 0.025956

Planar_Distance_Units: meters

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: AKCANBORDER
Entity_Type_Definition:: Coverage contains a single route in two sections that define the United States-Canadian border.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: LTYPE

Attribute_Definition: Line Type

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: national boundary
Enumerated_Domain_Value_Definition: location of national boundary

Detailed_Description:

Entity_Type:

Entity_Type_Label: BASE.AAT
Entity_Type_Definition:: Coverage contains a base map of Alaska produced by vectorizing a scanned image. Lines define coastline, streams, lakes, and bathymetry. Though cleaned up, it contains very small scanning artifacts that are not resolvable at 1:2,500,000, the intended scale of map.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: LTYPE

Attribute_Definition: Line Type

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Base, scan
Enumerated_Domain_Value_Definition: Scanned base map line

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: international boundary
Enumerated_Domain_Value_Definition: Boundary between Alaska and Canada

Detailed_Description:

Entity_Type:

Entity_Type_Label: CONTOURS.AAT
Entity_Type_Definition:: Coverage contains arcs defining contours on the U/M1 map-unit boundary in areas where sufficient well control exists to define that boundary (Colville Basin and Cook Inlet Basin).
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: LTYPE

Attribute_Definition: Line Type

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: contour, certain
Enumerated_Domain_Value_Definition: Certain U/M1 contour in meters below sea level

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: scratch boundary, certain
Enumerated_Domain_Value_Definition:: Connects the certain contours to create a continuous contour line

Detailed_Description:

Entity_Type:

Entity_Type_Label: GRATICULE.AAT
Entity_Type_Definition:: Coverage contains arcs defining latitude-longitude grid lines over map. Many arc segments are needed to make these lines smooth curves.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: LTYPE

Attribute_Definition: Line type

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: gridline, certain
Enumerated_Domain_Value_Definition: Certain latitude-longitude lines over map

Detailed_Description:

Entity_Type:

Entity_Type_Label: MAIN.PAT
Entity_Type_Definition:: Principal coverage containing all geologic features (contacts, faults), physiographic features (glaciers, lakes) and thermal-maturity units.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: PTYPE

Attribute_Definition: Polygon Type

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ig-M
Enumerated_Domain_Value_Definition: Igneous/metamorphic map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ig-M?
Enumerated_Domain_Value_Definition: Igneous/metamorphic map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition: Supermature map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: S?
Enumerated_Domain_Value_Definition: Supermature map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: O
Enumerated_Domain_Value_Definition: Overmature map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: O?
Enumerated_Domain_Value_Definition: Overmature map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M2
Enumerated_Domain_Value_Definition: Mature 2 map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M2?
Enumerated_Domain_Value_Definition: Mature 2 map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M1
Enumerated_Domain_Value_Definition: Mature 1 map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M1?
Enumerated_Domain_Value_Definition: Mature 1 map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: U
Enumerated_Domain_Value_Definition: Undermature map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: U?
Enumerated_Domain_Value_Definition: Undermature map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ?
Enumerated_Domain_Value_Definition: Unknown thermal maturity

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Qs
Enumerated_Domain_Value_Definition: Quaternary sedimentary deposits

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: W
Enumerated_Domain_Value_Definition: Water feature (lakes, oceans)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: G
Enumerated_Domain_Value_Definition: Glacier

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Unmapped
Enumerated_Domain_Value_Definition: Areas outside map area (Canada, Russia)

Attribute:

Attribute_Label: LTYPE

Attribute_Definition: Line type

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: contact, approximately located
Enumerated_Domain_Value_Definition: Contact whose position is not precisely known

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: contact, certain
Enumerated_Domain_Value_Definition: Observed contact

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: contact, concealed
Enumerated_Domain_Value_Definition: Contact whose position is concealed and inferred

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fault, approximately located
Enumerated_Domain_Value_Definition: Fault whose position is not precisely known

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fault, certain
Enumerated_Domain_Value_Definition: Observed fault

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fault, concealed
Enumerated_Domain_Value_Definition: Fault whose position is concealed and inferred

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fault, detachment, certain
Enumerated_Domain_Value_Definition: Observed detachment fault

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fault, detachement, concealed
Enumerated_Domain_Value_Definition: Detachment fault whose position is concealed and inferred

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: thrust fault, approximately located
Enumerated_Domain_Value_Definition: Thrust fault whose position is not precisely known

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: thrust fault, certain
Enumerated_Domain_Value_Definition: Observed thrust fault

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: thrust fault, concealed
Enumerated_Domain_Value_Definition: Thrust fault whose position is concealed and inferred

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: water boundary, certain
Enumerated_Domain_Value_Definition: Observed water boundary

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: glacier boundary, certain
Enumerated_Domain_Value_Definition: Observed glacier boundary

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: map boundary, scan
Enumerated_Domain_Value_Definition: Boundary of scanned map

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: scratch boundary, certain
Enumerated_Domain_Value_Definition:: Connects the certain contours to create a continuous contour line

Detailed_Description:

Entity_Type:

Entity_Type_Label: OUTCROPS.PAT
Entity_Type_Definition:: A coverage containing points corresponding to all outcrop sample localities.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: CAI

Attribute_Definition:

Real number giving conodont color-alteration-index value at this locality

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 8.0

Attribute:

Attribute_Label: VR

Attribute_Definition: Real number giving vitrinite-reflectance value at this locality

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 9.17

Attribute:

Attribute_Label: UNIT

Attribute_Definition:

Integer value used to define thermal-maturity map unit for this locality

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Map Unit "Undermature"

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: Map Unit "Mature I"

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: Map Unit "Mature II"

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: Map Unit "Overmature"

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition: Map Unit "Supermature"

Attribute:

Attribute_Label: CMDS

Attribute_Definition:

Character string; a flag used to define continental margin dredge samples. Assigned a null string for all localities except continental margin dredge samples; these are assigned a CMDS value corresponding to map unit for VR or CAI value; used to choose appropriate color of marker symbol in the plot.aml.

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ig-M
Enumerated_Domain_Value_Definition: Igneous/metamorphic map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ig-M?
Enumerated_Domain_Value_Definition: Igneous/metamorphic map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition: Supermature map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: S?
Enumerated_Domain_Value_Definition: Supermature map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: O
Enumerated_Domain_Value_Definition: Overmature map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: O?
Enumerated_Domain_Value_Definition: Overmature map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M2
Enumerated_Domain_Value_Definition: Mature 2 map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M2?
Enumerated_Domain_Value_Definition: Mature 2 map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M1
Enumerated_Domain_Value_Definition: Mature 1 map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: M1?
Enumerated_Domain_Value_Definition: Mature 1 map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: U
Enumerated_Domain_Value_Definition: Undermature map unit, certain

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: U?
Enumerated_Domain_Value_Definition: Undermature map unit, questionable

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ?
Enumerated_Domain_Value_Definition: Unknown thermal maturity

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Qs
Enumerated_Domain_Value_Definition: Quaternary sedimentary deposits

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: W
Enumerated_Domain_Value_Definition: Water feature (lakes, oceans)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: G
Enumerated_Domain_Value_Definition: Glacier

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Unmapped
Enumerated_Domain_Value_Definition: Areas outside map area (Canada, Russia)

Detailed_Description:

Entity_Type:

Entity_Type_Label: TEXT
Entity_Type_Definition:: Coverage contains all of map annotation, including names of water features, political and town names, map-unit tags, geologic-feature names, contour labels, and descriptions of thermal-maturity data from selected wells. Contains leaders as arcs.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: LTYPE

Attribute_Definition: Line type

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: leader, certain
Enumerated_Domain_Value_Definition: Definite leader

Detailed_Description:

Entity_Type:

Entity_Type_Label: TOWNS.PAT
Entity_Type_Definition:: Coverage contains points showing locations of towns. Database category "PTTYPE" defines three size classes, so that towns of different sizes can be plotted with different symbols.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: PTTYPE

Attribute_Definition:

Character string giving town size, used in plotting different size towns with different symbols. Takes on values small, medium, and large.

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: small
Enumerated_Domain_Value_Definition: small town

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: medium
Enumerated_Domain_Value_Definition: medium town

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: large
Enumerated_Domain_Value_Definition: large town

Detailed_Description:

Entity_Type:

Entity_Type_Label: WELLS1.PAT
Entity_Type_Definition:: A coverage containing points corresponding to selected wells for which thermal-maturity data were used to constrain contours on U/M1 map-unit boundary surface in the Colville Basin and Cook Inlet Basin.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: WELLNAME
Attribute_Definition: Character string giving name of well
Attribute_Definition_Source: I-2494

Attribute:

Attribute_Label: SURF

Attribute_Definition:

Vitrinite-reflectance value at the ground surface, extrapolated from subsurface data.

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.05
Range_Domain_Maximum: 1.52

Detailed_Description:

Entity_Type:

Entity_Type_Label: WELLS2.PAT
Entity_Type_Definition:: A coverage containing points corresponding to selected wells for which descriptions of thermal maturity data are provided as callouts in the text coverage.
Entity_Type_Definition_Source: I-2494

Attribute:

Attribute_Label: WELLNAME
Attribute_Definition: Character string giving name of well
Attribute_Definition_Source: I-2494

Attribute:

Attribute_Label: SURF

Attribute_Definition_Source: I-2494

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.04
Range_Domain_Maximum: 3.76

Attribute_Definition:

Vitrinite-reflectance value at the ground surface, extrapolated from subsurface data.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey Information Services

Contact_Address:

Address_Type: mailing address
Address: Box 25248, Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80255-0286
Country: USA

Contact_Voice_Telephone: 1-888-ASK-USGS

Contact_Facsimile_Telephone: 1-303-202-4693

Resource_Description: U.S. Geological Survey Digital Data Series DDS-54

Distribution_Liability:

This Compact Disc-Read Only Memory (CD-ROM) publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
Although all data and software published on this CD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the U.S. Geological Survey as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
Graphical map depictions on this disc are intended to be used within the map scale limits applicable to the source data. Although software enables the user to show images on the disc at various scales, the user is cautioned to refer to the source documentation for the appropriate map scale limitations.

Standard_Order_Process: