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- Identification_Information:
- Citation:
- Citation_Information:
- Originator: Dr. Thomas Ahlbrandt
- Publication_Date: 199808
- Title:
- Map showing Geology, Oil and Gas Fields and Geological Provinces
- of the Former Soviet Union
- Edition: 1
- Geospatial_Data_Presentation_Form: map
- Series_Information:
- Series_Name: World Energy Data on CD-ROM - Open File Report 97-470E
- Issue_Identification: Former Soviet Union
- Publication_Information:
- Publication_Place: Denver, Colorado
- Publisher: U.S. Geological Survey
- Other_Citation_Details: N/A
- Description:
- Purpose:
- The data provides governments, geological community, consultants,
- and public with important information on the geological basis used
- to define provinces and oil and gas fields for U.S.G.S. Oil and
- Gas assessement of the World. The map is a visual summary of the
- data gathered for region 1.
- Abstract:
- The map showing Geology, Oil and Gas fields and Geologic Provinces
- of the Former Soviet Union is a result of a GIS data set designed originally
- in ESRI's ARC/INFO ver. 7.0.4 and 7.1.2 system.
-
- There are the two files in root directory of the CD-ROM -
-
- 1. fsumap.pdf - Portable Document File (Adobe Acrobat).
- This file contains a complete color map of geology, oil and gas field
- centerpoints from the Petroconsultants 1996 database, geological
- provinces at the scale of 1:7,500,000, country boundaries from
- ESRI's ArcWorld (1:3 million) in an Adobe Portable Document File (PDF) format.
- The PDF file is 13 pages and includes geological provinces list sorted
- by Name and by Code.
- This PDF file is readable by means of the freeware program, Acrobat
- Reader 3 (or greater), which is included on the CD-ROM.
- This PDF file and accompanying software permits users to preview
- the map data contained in this product; understand methodoligies
- in creating the product; link from geologic province name or
- number to that specific area on the maps and also to print/plot
- these data.
-
- 2. fsu_geo.aep - ESRI's ArcExplorer 1.1 Project file.
- (Workspace is \fsu\views - source ArcView shape files).
- This file consists of geology, geologic province, oil and gas
- fields centerpoints, major cities, and latitude/longitude grid
- layers (ArcView themes).
- This file is readable by means of the freeware program,
- ESRI's ArcExplorer 1.1.
- It can be downloaded FREE from ESRI home page -
- http://www.esri.com/software/arcexplorer/index.html
-
- The rest of the information on the CD-ROM is in directory "FSU".
- That directory in turn has benn subdivided into directories
- ARC_COVR, EXPORT, METADATA (this file), PLOT, TEXT, VIEWS.
-
- --------------------
- There are several data sets subdivided into directories -
- 1. ARC_COVR
-
- Contains original UNIX ARC/INFO (ver. 7.1.2) coverages
- in (Equidistant Conic projection -
- 1.1 geo1 - Surficial geology. Item "glg" in Feature Attribute
- Table.
- 1.2 prov1 - Geological Provinces that outline areas with
- common geological structures and petroleum systems.
- There are four additional items in the .pat -
- "code" - Geologic Province code
- "name" - Geologic Province name
- "type" - Province type (rank)
- "reg" - USGS World Region Code (equal to 1 for the Former
- Soviet Union).
- 1.3 fld1 - Centerpoints of Oil and Gas fields (Petroconsultants).
- There is additional item in Point Attribute Table (.pat) -
- "fie_type" - type of oil/gas field.
- 1.4 pol1 - Political boundaries (ESRI).
- 1.5 llf1 - Latitude/Longitude gradicule with cell size 4 by 6 degrees.
- 1.6 ocean - annotations for Ocean names.
- 1.7 city1 - Major cities (ESRI).
- 1.8 outline - outer map boundary (neatline).
- 1.9 info - a standard ARC/INFO info directory.
- 1.10 rus_wep.lut - Look-up table with shade codes for "glg".
- 1.11 index.lut - Look-up table with shade codes for Regions.
- ***************************************************************
-
- 2. EXPORT
-
- Contains several subsets in EXPORT and UNGENERATE formats -
- 2.1 ARC/INFO EXPORT data set (Equidistant Conic projection)
- consists of eight files in ARC/INFO INTERCHANGE format
- (*.e00 files without compression).
- File names correspond to the original coverages names
- (see section 1).
- 2.2 ARC/INFO UNGENERATE files (ASCII comma delimeted) for seven
- of major coverages except "ocean" (*.gen extention).
- File names correspond to the original coverage names.
- 2.3 Attribute files (*.csv extention).
- Contains ASCII, comma delimeted files for the seven "Feature
- Attribute tables" of the ARC/INFO coverages - geo1, fld1, city1,
- llf1, pol1, prov1.
- ***************************************************************
- 3. PLOT
-
- Contains six files -
- 3.1 rus_all.gra - ARC/INFO graphic file to draw the complete
- map on supported graphic displays.
- 3.2 rus_all.rtl - RTL file (ready to use plot file for HP650
- color plotter).
- 3.3 rus_all.eps - Encapsulated Postscript file for the map
- (used as input for ADOBE PDF file). This file directly
- loadable to Adobe Illustrator 7.0.
- 3.4 rus_prov.eps - Encapsulated Postscript file same as above
- but without geology.
- 3.5 index.gra - file to draw a small world index map on upper
- left map corner of the large-scale map of region 1.
- 3.6 index.eps - same as above but it is used for the first page of
- ADOBE PDF file.
- *****************************
- 4. TEXT
-
- These three identical sets each for UNIX, DOS and MAC
- (see below under "Supplemental Information").
- *****************************
- 5. VIEWS
-
- ARCVIEW (ver 3.0) data set consists of 21 files. The most
- significant is project file - "rus_geo.apr".
- There are six shape-files (*.shp) corresponding to six major
- ARCINFO coverages - geo1, fld1, prov1, latlong, city, ouline.
- Every shape file is supplemented by the two standard ARCVIEW
- files with *.shx and *.dbf extentions.
- There are two legend files for geology theme -
- rus_geo.avl - indexes and names for geologic map units.
- fld.avl - legend for oil/gas markers.
-
- *****************************
-
- The ARC/INFO coverages are supplemented by several files
- (total 30) in ARC/INFO INTERCHANGE format (.e00) (where it was
- available). These files allow user to produce complete Map
- of data at a scale 1:7,500,000 by using ARCPLOT subsystem.
- Correspondent ARC/INFO AML program file to create a plot is
- plot_map.e00 (needs to imported to ARC/INFO by IMPORT program).
-
- Supplemental_Information:
- The 20 files are provided as supplementary for plotting final Map
- in ARC/INFO ARCPLOT. They are located in "text" directory.
-
- They all are in ARC/INFO INTERCHANGE format uncompressed (extention .e00):
- 1. plot_map/ - AML program to produce complete plot of the
- map at a scale 1:7,500,000 and to plot that map on HP650C
- plotter (compiled by F. Persits).
- To use this file the user must copy it to a master
- directory and rest of the files in corresponding subdirectories
- under this master directory like /text, /arc_covr, etc.
- 2. usgs - U.S.G.S. title text.
- 3. source - description of source map and data processing
- steps.
- 4. prov_nam - List of USGS Geologic Province names.
- 5. proj - Map projection descriptive text.
- 6. dsclaim - Text for disclaimer.
- 7. equi_geo - Projection data for ARC/INFO PROJECT.
- 8. fnt034 - Pattern for rus_shd shadeset.
- 9. geo_key - Key-legend file for Geologic Legend.
- 10. intro - Introductory text for the Map.
- 11. mapbar - AML program for drawing scale and scalebar
- (by B. Beeman).
- 12. offile - Open File report text.
- 13. oil_key - Key-legend file for Oil/Gas fields centerpoints.
- 14. pol_key - Key-legend file for International boundaries.
- 15. con_key - Key-legend file for geologic polygon outline.
- 16. city_key - Key-legend file for Major cities markers.
- 17. rus_shd - Polygon shadeset file.
- 18. rus_wep - INFO look-up table for ARC/INFO POLYGONSHADE
- based on "glg" item in geo1.pat.
- 19. prov_key - Key-legend for Geologic Province outline.
- 20. refer - References (other related sources of information).
- Time_Period_of_Content:
- Time_Period_Information:
- Range_of_Dates/Times:
- Beginning_Date: 199708
- Ending_Date: 199806
- Currentness_Reference: Publication date
- Status:
- Progress: Complete
- Maintenance_and_Update_Frequency: None planned.
- Spatial_Domain:
- Bounding_Coordinates:
- West_Bounding_Coordinate: 19.0
- East_Bounding_Coordinate: -170.0
- North_Bounding_Coordinate: 82.
- South_Bounding_Coordinate: 35.0
- Keywords:
- Theme:
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Oil
- Theme_Keyword: Gas
- Theme_Keyword: Geology
- Theme_Keyword: Former Soviet Union
- Theme_Keyword: Russia
- Theme_Keyword: Geologic Province
- Place:
- Place_Keyword_Thesaurus: None
- Place_Keyword: Armenia
- Place_Keyword: Azerbaijan
- Place_Keyword: Byelarus
- Place_Keyword: Commonwealth of Independant States
- Place_Keyword: Estonia
- Place_Keyword: Former Soviet Union
- Place_Keyword: Georgia
- Place_Keyword: Kazakhstan
- Place_Keyword: Kyrgyzstan
- Place_Keyword: Latvia
- Place_Keyword: Lithuania
- Place_Keyword: Moldova
- Place_Keyword: Russia
- Place_Keyword: Tajikistan
- Place_Keyword: Turkmenistan
- Place_Keyword: Ukraine
- Place_Keyword: Uzbekistan
- Access_Constraints:
- The oil and gas field centerpoints data set are part of
- a proprietary database and field names or any other data
- associated with the field centerpoints can not be
- attributed or displayed. Furthermore, portions of this
- database covering coastline and country boundaries contain
- intellectual property of Environmental Systems Research
- Institute, Inc. (ESRI), and are used with permission. End
- users are permitted to use these data sets for their own
- internal use, including derivative work, but are prohibited
- from using and redistributing these data individually or in
- a derivative work to third parties. Please refer to the
- "ATTACHMENT B" file (attach_b.txt) on this CD-ROM for further
- information on ESRI's license agreement. ESRI and MapObjects
- are registerd trademarks in the United States and are either
- trademarks or registered trademarks in all other countries
- where they are used, and ArcExplorer is a trademark of
- Environmental Systems Research, Inc.
- Use_Constraints:
- Since the oil and gas field centerpoints data set is part
- of a proprietary database, permission must be obtained from
- Petroconsultants International Data Corp. prior to further
- use of the data. In addition, portions of this database
- covering the coastline and country boundaries contain
- intellectual property of Environmental Systems Research
- Institute, Inc. (ESRI), and are used herein with permission.
- End users are permitted to use these data sets for their own
- internal use, including any derivative work, but are prohibited
- from using and redistributing these data sets individually or
- in a derivative work to third parties. Please refer the
- "ATTACHMENT B" file on this CD-ROM for more comprehensive
- information concerning ESRI's license agreement. ESRI and MapObjects
- are registerd trademarks in the United States and are either
- trademarks or registered trademarks in all other countries
- where they are used, and ArcExplorer is a trademark of
- Environmental Systems Research, Inc.
- Point_of_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: Feliks Persits
- Contact_Organization:
- U.S. Geological Survey,
- Central Region, Denver
- Contact_Position: GIS Contractor
- Contact_Address:
- Address_Type: mailing and physical address
- Address:
- U.S. Geological Survey
- Energy Resource Team, Box 25046
- Denver Federal Center, MS 939
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80225-0046
- Country: USA
- Contact_Voice_Telephone: 303-236-3612
- Contact_Facsimile_Telephone: 303-236-8822
- Contact_Electronic_Mail_Address: fpersits@usgs.gov
- Hours_of_Service: 9 a.m - 5 p.m. U.S. Rocky Mountain Time Zone
- Data_Set_Credit:
- Digital Map Compilation - Feliks Persits
- Geological Attribution - Feliks Persits, Douglas Steinshouer
- Province Boundaries - Gregory Ulmishek
- Province Boundaries Digital Compilation - Lee Osmonson
- Oil and Gas Database - Tim Klett
- Security_Information:
- Security_Classification_System: None
- Security_Classification: None
- Security_Handling_Description: None
- Native_Data_Set_Environment:
- Hardware: Sun Sparc Server 1000 with Solaris 2.5.1
- GIS software: Workstation ARC/INFO ver. 7.0.4
- Set of subdirectories of 320 MB total size
- Data_Quality_Information:
- Attribute_Accuracy:
- Attribute_Accuracy_Report:
- Overall accuracy is based on accuracy of general geology coverage.
- Since all the attributes are of character type, only
- correctness of polygon labelling can be provided (see below).
- Quantitative_Attribute_Accuracy_Assessment:
- Attribute_Accuracy_Value:
- Standard ARC/INFO attributes accuracy in Feature Attributes
- Tables like AREA, PERIMETER, etc. depend on horizontal positional
- accuracy.
- All the additional attributes are character type.
- Attribute_Accuracy_Explanation:
- All the Attributes besides standard ARC/INFO atttibutes are
- of character type.
- Standard verification of attributes reliability has been done by
- ARC/INFO EDITPLOT program to find polygons without assigned
- character value or with more than one value.
- Logical_Consistency_Report:
- Since the data set is collection of ARC/INFO coverages, topological
- consistency is supported. The same fuzzy tolerance is
- maintained through all processing steps (1500).
- Based on fuzzy tolerance value all undershoots and overshoots
- are detected and deleted.
- A comparison between color plot and original paper map was
- carried out by visual comparison. Color plots in 1:7,500,000
- scale were superimposed on each of corresponding original
- map sheets. All errors detected in attributes were corrected.
- Completeness_Report:
- All data are found to be topologically correct.
- The generalizations of original geological map (VSEGEI) were
- carried out:
- 1. Several geological age subdivisions on the original (VSEGEI)
- 1:7,500,000 geological map are combined into single units.
- For example, all Cretaceous are combined into one unit.
- 2. All the Precambrian subdivisions are combined into one
- unit.
- The version of Geologic Province Boundaries is correct as
- of April 1998.
- Positional_Accuracy:
- Horizontal_Positional_Accuracy:
- Horizontal_Positional_Accuracy_Report:
- 1. Original geological maps are of 750 meter maximum accuracy
- (0.1 mm on paper map of 1:7,500,000 scale)
- 2. Scanned images are of 200 dot/inch resolution
- (0.1 mm on paper). That is why fuzzy tolerance for CLEAN
- programm in ARC/INFO is set to 1500 m (two pixels).
- 3. Several steps are taken to vectorize scanned images.
- The projection and coordinate system for the original map
- are not given. Therefore it is necessary to georeference
- the map to real world coordinates. This is done as follows:
-
- 3.1. The latitude/longitude graticule with cell size 4 * 6 degree
- is projected to Equidistant Conic projection and then used to
- create ARC/INFO point coverage. That point coverage is used
- to create "to - from" links by ARC/INFO CONTROLPOINTS program.
- 3.2 A gray-scale scanned image of the original paper map is
- transformed to Equidistant Conic projection by ARC/INFO GRIDWARP
- program (polynomial of the second order) using the "to - from"
- links created by CONTROLPOINTS program.
- 3.3 The scanned image from the second step is vectorized by
- the method of extraction of linear features described by F.Persits,
- 1997, (USGS open-file report OF-97-713), and then corrected by
- hands-on digitization.
- 3.4 A series of piecewise "rubbersheet" transformations are
- applied to the final ARC/INFO coverage. The ARC/INFO coverages
- that are used for transformation were ESRI's ArcWorld 1:3 million GIS
- cartographic layers.
- Overall position error is estimated with a randomly selected set
- of locations on the ESRI coverages and comparing the same locations on
- the final geology coverage (geo1). RMS error is 4.8 km (0.64 mm
- of the original paper map) with maximum error about 12 km (1.6 mm
- on original paper map).
- Quantitative_Horizontal_Positional_Accuracy_Assessment:
- Horizontal_Positional_Accuracy_Value: 4800 meters
- Horizontal_Positional_Accuracy_Explanation: see above section -
- Lineage:
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator:
- Vsesoyuzniy Nauchno-Issledovatel'skiy
- Geologicheskiy Institute (VSEGEI).
- Publication_Date: 1966
- Publication_Time: unknown
- Title: Geologic Map of The USSR, scale 1:7,500,000
- Edition: 1966
- Geospatial_Data_Presentation_Form: map
- Series_Information:
- Series_Name: unknown
- Issue_Identification: unknown
- Publication_Information:
- Publication_Place: Leningrad, USSR
- Publisher: Ministry of Geology of the USSR
- Other_Citation_Details: unknown
- Source_Scale_Denominator: 7500000
- Type_of_Source_Media: Paper
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Range_of_Dates/Times:
- Beginning_Date: 1966
- Ending_Date: 1966
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: Paper Geologic Map
- Source_Contribution:
- The two paper map sheets are used as the sources
- for creation of the corresponding ARC/INFO coverages.
- Process_Step:
- Process_Description:
- Scanning original paper maps on large format Anatech Eagle
- scanner. There is one copy for each of two sheets - gray scale
- (after original map scanning).
- Images are in TIFF format at 200 dot/inch resolution.
- The images then transformed to Equidistant Conic Projection
- by ARC/INFO GRIDWARP program (polynomial of the second order).
- The "from-to" links for transformation are created by ARC/INFO
- CONTROLPOINTS program where latitude/longitude grid (point
- coverage) with cell size 6X4 degrees is used as a reference.
- Source_Used_Citation_Abbreviation: Scanned images
- Process_Date: 199710
- Source_Produced_Citation_Abbreviation: Georeference gray-scale images
- Process_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: F. Persits
- Contact_Position: GIS Contractor
- Contact_Address:
- Address_Type: mailing and physical address
- Address:
- U.S. Geological Survey
- Energy Resource Program, box 25046
- Denver Federal Center, MS 939
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80225-0046
- Country: USA
- Contact_Voice_Telephone: 303-236-3612
- Contact_TDD/TTY_Telephone: N/A
- Contact_Facsimile_Telephone: N/A
- Contact_Electronic_Mail_Address: fpersits@usgs.gov
- Hours_of_Service: 9 a.m. - 5 p.m. US Rocky Mountain Time Zone
- Contact_Instructions: N/A
- Process_Step:
- Process_Description:
- Georeferenced gray scale images from the first step are vectorized
- by the method of extraction linear features described by F.Persits,
- 1997, (USGS open-file report OF-97-713), and then corrected by
- hands-on digitization.
- Source_Used_Citation_Abbreviation: Georeference gray-scale images
- Process_Date: Unknown
- Source_Produced_Citation_Abbreviation: ARC/INFO coverage
- Process_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: F. Persits
- Contact_Position: GIS Contractor
- Contact_Address:
- Address_Type: mailing and physical address
- Address:
- U.S. Geological Survey
- Energy Resource Program, Box 25046
- Denver Federal Center, MS 939
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80225-0046
- Country: USA
- Contact_Voice_Telephone: 303-236-4608
- Contact_TDD/TTY_Telephone: N/A
- Contact_Facsimile_Telephone: 303-236-0459
- Contact_Electronic_Mail_Address: fpersits@usgs.gov
- Hours_of_Service: 9 a.m. - 5 p.m. US Rocky Mountain Time Zone
- Contact_Instructions: N/A
- Process_Step:
- Process_Description:
- A series of piecewise "rubbersheet" transformations
- are applied to the ARC/INFO coverages created after
- the vectorizing is completed.
- The ARC/INFO coverages used for transformation
- are ESRI's ArcWorld 1:3 million GIS cartographic layers (RIV3M, CTRY3M).
- To perform rubber transformation the combination of ARC/INFO
- ARCEDIT (add links) and ADJUST programs are applied.
- There are a number of such transformations for every limited
- area on original coverage.
- Source_Used_Citation_Abbreviation: ARC/INFO coverages
- Process_Date: 199802
- Source_Produced_Citation_Abbreviation: Final ARC/INFO coverage
- Process_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: F. Persits
- Contact_Position: GIS Contractor
- Contact_Address:
- Address_Type: mailing and physical address
- Address:
- U.S. Geological Survey
- Energy Resource Program, Box 25046
- Denver Federal Center, MS 939
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80225-0046
- Country: USA
- Contact_Voice_Telephone: 303-236-4608
- Contact_TDD/TTY_Telephone: N/A
- Contact_Facsimile_Telephone: 303-236-0459
- Contact_Electronic_Mail_Address: fpersits@usgs.gov
- Hours_of_Service: 9 a.m. - 5 p.m. US Rocky Mountain Time Zone
- Contact_Instructions: N/A
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator: Petroconsultants International Data Corp.
- Publication_Date: 1996
- Publication_Time: unknown
- Title: Petroleum exploration and production database
- Edition: 1996
- Geospatial_Data_Presentation_Form: map
- Series_Information:
- Series_Name: N/A
- Issue_Identification: 1996
- Publication_Information:
- Publication_Place: Houston, Texas
- Publisher: Petroconsultants International Data Corp.
- Other_Citation_Details:
- All data in Petroworld Database use Latitude and
- Longitude coordinates in Decimal Degrees.
- Type_of_Source_Media: CD-ROM
- Source_Citation_Abbreviation: Centerpoints of Oil and Gas Fields
- Source_Contribution:
- Centerpoints of Oil and Gas Fields are reprojected
- to Equidistant Conic Projection and used as a general reference
- for the number, distribution, and location of oil and gas field
- centerpoints. They are also used as the layer on final ARC/INFO
- Map plot and ARCVIEW project.
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 1994
- Source_Currentness_Reference: publication date
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator: ESRI
- Publication_Date: 1992
- Publication_Time: unknown
- Title: ArcWorld 1:3 million cartographic layers.
- Edition: 1
- Geospatial_Data_Presentation_Form: map
- Series_Information:
- Series_Name: ArcData
- Issue_Identification: N/A
- Publication_Information:
- Publication_Place: Redlands, CA, USA
- Publisher: ESRI
- Other_Citation_Details:
- There are many informational layers in this data set.
- Coordinates are Latitude and Longitude in Decimal
- Degrees.
- Source_Scale_Denominator: 3000000
- Type_of_Source_Media: CD-ROM
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 199207
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: N/A
- Source_Contribution:
- The external source for country boundaries, rivers and cities
- for rubber transformation and as a general reference in ARC/INFO
- final Map plot. Country boundaries, centerlines of rivers and major
- cities.
- Spatial_Data_Organization_Information:
- Indirect_Spatial_Reference: N/A
- Direct_Spatial_Reference_Method: Vector
- Spatial_Reference_Information:
- Horizontal_Coordinate_System_Definition:
- Planar:
- Map_Projection:
- Map_Projection_Name: Equidistant Conic
- Equidistant_Conic:
- Standard_Parallel: 58.5
- Longitude_of_Central_Meridian: 100.0
- Latitude_of_Projection_Origin: 60.0
- False_Easting: 0
- False_Northing: 0
- Planar_Coordinate_Information:
- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
- Abscissa_Resolution: 1
- Ordinate_Resolution: 1
- Planar_Distance_Units: meters
- Geodetic_Model:
- Horizontal_Datum_Name: N/A
- Ellipsoid_Name: Krasovsky
- Semi-major_Axis: 6378245
- Denominator_of_Flattening_Ratio: 0.996647681
- Entity_and_Attribute_Information:
- Detailed_Description:
- Entity_Type:
- Entity_Type_Label: Surficial geology
- Entity_Type_Definition:
- the geology of each polygon by
- straigraphic unit, age, and/or lithology.
- Entity_Type_Definition_Source: U.S. Geological Survey
- Attribute:
- Attribute_Label: glg
- Attribute_Definition: The abbreviated geologic age of the surficial rock formation.
- Attribute_Definition_Source: U.S.Geological Survey
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- Q, QT, N, NPg, Pg, PgK, K, KJ, J, JTr,
- Tr, Pz, P, TrP, PC, C, CD,
- D, DS, S, SO, O, OCm, Cm, pC, CmPt, Pt, Z, Y, X, A,
- Qv, Ti, Mi, Pi, PtAi, ii, oth, Ice, H2O, Sea
- Enumerated_Domain_Value_Definition:
- Range of geologic age values taken from original map legend:
- Q - Quaternary (undivided)
- QT - Quaternary and Tertiary
- N - Neogene
- NPg - Neogene and Paleogene
- Pg - Paleogene
- PgK - Paleogene and Cretaceous
- K - Cretaceous (undivided)
- KJ - Cretaceous and Jurassic
- J - Jurassic (undivided)
- JTr - Jurassic and Triassic
- Tr - Triassic
- Pz - Paleozoic (undivided)
- P - Permian
- TrP - Triassic and Permian
- PC - Permian - Carboniferous
- C - Carboniferous
- CD - Carboniferous and Devonian
- D - Devonian (undivided)
- DS - Devonian and Silurian
- S - Silurian
- SO - Silurian - Ordovician
- O - Ordovician
- OCm - Ordovician - Cambrian
- Cm - Cambrian
- pC - Precambrian (undivided)
- CmPt - Cambrian - Proterozoic
- Pt - Proterozoic
- Z - Upper Proterozoic
- Y - Upper and Middle Proterozoic
- X - Lower and Middle Proterozoic
- A - Archean
- Qv - Extrusive rocks, Pliocene and Quaternary
- TKi - Acidic intrusive rocks, Creteceous, Paleogene and Neogene
- Mi - Acidic Mesozoic intrusive rocks
- Pi - Paleozoic intrusive rocks
- PtAi - Acidic Proterozoic and Archean intrusive rocks
- ii - Basic, Ultrabasic and Alkaline intrusive rocks of unknown age
- oth - Areas outside of the former Soviet Union
- Ice - Arctic areas covered by Ice
- Sea - Sea and large lakes
- H2O - Lakes and wide rivers
- Enumerated_Domain_Value_Definition_Source: U.S.Geological Survey
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