Identification_Information: Citation: Citation_Information: Originator: John C. Reed, Jr. Originator: Charles A. Bush Publication_Date: 2001 Title: Generalized Geologic Map of the Conterminous United States Edition: 1.0 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: This data set contains boundaries and tags for major geologic units in the conterminous United States. In addition to the polygons representing the areal extent of geologic units, it identifies boundaries of metamorphic provinces, major faults, calderas, impact structures, and the limits of continental glaciation. The data depict the geology of the bedrock that lies at or near the land surface, but not the distribution of surficial materials such as soils, alluvium, and glacial deposits. The data are generalized from a compilation prepared for use in the Geologic Map of North America, to be published in hard copy by the Geological Society of America and released as a digital file by the U.S. Geological Survey. Purpose: These data have been prepared with a degree of detail appropriate for viewing at a scale of 1:7,500,000. Because of the degree of generalization required (generalization based on compilation scale), the data are intended primarily for display and for regional and national analysis, rather than for more detailed analysis in specific areas. No responsibility is assumed by the U.S. Geological Survey in the use of these data. Supplemental_Information: The data set for the Geologic Map of the Conterminous United States consists of 9 data layers. The data layers for faults and glacial limit lines are included in two different versions. The data are available as shapefiles, SDTS files, or Arc/INFO Export files. The data layers are distributed and should be used together. All the data layers were created as ARC/INFO coverages and converted to other formats for distribution purposes. The following files are included: > Calderl075 - Outlines of major calderas and impact structures > Faultgl075 - Fault lines, with line decorations* > Faultl075 - Fault lines, without line decorations** > Geolgym075 - Geologic units, as polygons > Geotxtl075 - Graphic representation of geologic unit text* > Glacagl075 - Glacial limit lines, with line decorations* > Glacal075 - Glacial limit lines, without line decorations** > Impactx075 - Impact structure locations, as points > Metfacp075 - Areas and facies types of metamorphism, as polygons > >* these files are not 'true' Arc/INFO coverages; they are graphic > representations of symbols and text used on the geologic map. These > files should be used to produce appropriately symbolized graphics. > The decorations and text only appear correctly in Lambert Azimuthal > Equal Area projection. > >** these files are the same as the files marked with * but do not > include the line decorations. They are the 'true' fault and glacial > limit line Arc/INFO coverages. These files should be used for data > analysis. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, some Arc/INFO-specific terminology is included for clarity and expediency. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19980301 Ending_Date: 19990601 Currentness_Reference: Compilation date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.73301687 East_Bounding_Coordinate: -66.95458457 North_Bounding_Coordinate: 50.00006074 South_Bounding_Coordinate: 24.51789429 Keywords: Theme: Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology Theme_Keyword: Bedrock Theme_Keyword: Faults Theme_Keyword: Geologic History Theme_Keyword: Geologic Map Theme_Keyword: Geology Theme_Keyword: Glacial Limits Theme_Keyword: Impact Structures Theme_Keyword: Metamorphic Rocks Theme_Keyword: Plutonic Rocks Theme_Keyword: Regional Geology Theme_Keyword: Sedimentary Rocks Theme_Keyword: Tectonic History Theme_Keyword: Tectonics Theme_Keyword: Volcanic Rocks Theme_Keyword: Volcanoes Place: Place_Keyword_Thesaurus: U.S. Board on Geographic Names (BGN) Place_Keyword: Conterminous United States Place_Keyword: United States Place_Keyword: USA Place_Keyword: Alabama Place_Keyword: Arizona Place_Keyword: Arkansas Place_Keyword: California Place_Keyword: Colorado Place_Keyword: Connecticut Place_Keyword: Delaware Place_Keyword: District of Columbia Place_Keyword: Florida Place_Keyword: Georgia Place_Keyword: Idaho Place_Keyword: Illinois Place_Keyword: Indiana Place_Keyword: Iowa Place_Keyword: Kansas Place_Keyword: Kentucky Place_Keyword: Louisiana Place_Keyword: Maine Place_Keyword: Maryland Place_Keyword: Massachusetts Place_Keyword: Michigan Place_Keyword: Minnesota Place_Keyword: Mississippi Place_Keyword: Missouri Place_Keyword: Montana Place_Keyword: Nebraska Place_Keyword: Nevada Place_Keyword: New Hampshire Place_Keyword: New Jersey Place_Keyword: New Mexico Place_Keyword: New York Place_Keyword: North Carolina Place_Keyword: North Dakota Place_Keyword: Ohio Place_Keyword: Oklahoma Place_Keyword: Oregon Place_Keyword: Pennsylvania Place_Keyword: Rhode Island Place_Keyword: South Carolina Place_Keyword: South Dakota Place_Keyword: Tennessee Place_Keyword: Texas Place_Keyword: Utah Place_Keyword: Vermont Place_Keyword: Virginia Place_Keyword: Washington Place_Keyword: West Virginia Place_Keyword: Wisconsin Place_Keyword: Wyoming Access_Constraints: None Use_Constraints: None. Acknowledgment of the National Atlas of the United States of America and (or) the U.S. Geological Survey would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: John C. Reed, Jr. Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address: Mail Stop 913, Box 25046 City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-1276 Contact_Facsimile_Telephone: 303-236-0214 Contact_Electronic_Mail_Address: jreed@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: An image of the map Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: An image of the map explanation Browse_Graphic_File_Type: PDF Data_Set_Credit: Nancy Shock, Digital Cartographer, U.S. Geological Survey, assisted in the digital compilation of this map. Native_Data_Set_Environment: SunOS, 5.6, sun4m UNIX ArcNFO version 7.1.2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The line attributes were manually checked by assigning unique line types to the values and then plotting the data. The plots were then compared to the source. The polygon attributes were checked by visually comparing the final colored plots to maps at various larger scales. Logical_Consistency_Report: Polygon and node topology are present. All polygons are labeled and were tested by using the Arc/INFO command LABELERRORS. All polygons were checked for closure, node errors, overshoots, undershoots, dangles and intersections using Arc/INFO routines. The Arc/INFO commands BUILD and CLEAN were run to ensure the topological consistency of the data set. Completeness_Report: This data set contains map unit boundaries and codes for the 48 conterminous States. Boundaries and codes are included for geologic units, metamorphic facies, limits of glacial advance, impact structures, caldera boundaries, and major faults. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The accuracy of the original data was checked by comparing the digital files to several data sources. Both the line work and the polygon labels were checked against the source compilation. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Bally, A.W. (ed.) Originator: Palmer, A.R. (ed.) Publication_Date: 1989 Title: The Geology of North America; an Overview Series_Information: Series_Name: The Geology of North America Issue_Identification: v. A, 619 p. Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1989 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DNAG-A Source_Contribution: Line work and attributes. Source_Information: Source_Citation: Citation_Information: Originator: Buchfiel, B.C. (ed.) Originator: Lipman, P.W. (ed.) Originator: Zoback, M.L. (ed.) Publication_Date: 1992 Title: The Cordilleran Orogen, Conterminous U.S. Series_Information: Series_Name: The Geology of North America Issue_Identification: v. G-3, 724 p. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Source_Scale_Denominator: 5,000,000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1992 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DNAG-G Source_Contribution: Line work and attributes. Source_Information: Source_Citation: Citation_Information: Originator: Hatcher, R.D. (ed.) Originator: Viele, G.W. (ed.) Originator: Thomas, W.A., (ed.) Publication_Date: 1989 Title: Appalachian-Ouachita Orogen in the United States Series_Information: Series_Name: The Geology of North America Issue_Identification: v. F-2, 767 p. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Source_Scale_Denominator: 5,000,000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1989 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DNAG-F Source_Contribution: Line work and attributes. Source_Information: Source_Citation: Citation_Information: Originator: King, P.B. Originator: Beikman H.M. Publication_Date: 1974 Title: Geologic map of the United States (exclusive of Alaska and Hawaii) Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Source_Scale_Denominator: 2,500,000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1974 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: GMUS Source_Contribution: Line work and attributes. Source_Information: Source_Citation: Citation_Information: Originator: Reed, J.C., Jr. (ed.) Originator: Bickford, M.E. (ed.) Originator: Houston, R.S. (ed.) Originator: Link, P.K. (ed.) Originator: Rankin, D.W. (ed.) Originator: Sims, P.K. (ed.) Originator: Van Schmus, W.R. (ed.) Publication_Date: 1993 Title: Precambrian: Conterminous U.S. Series_Information: Series_Name: The Geology of North America Issue_Identification: v. C-2, 657 p. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Source_Scale_Denominator: 5,000,000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DNAG-C Source_Contribution: Line work and attributes. Source_Information: Source_Citation: Citation_Information: Originator: Salvador, A., ed Publication_Date: 1991 Title: The Gulf of Mexico Basin Series_Information: Series_Name: The Geology of North America Issue_Identification: v. J, 568 p. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1991 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DNAG-J Source_Contribution: Line work and attributes. Source_Information: Source_Citation: Citation_Information: Originator: Sheridan, R.E. (ed.) Originator: Grow, J.A. (ed.) Publication_Date: 1988 Title: The Atlantic Continental Margin, U.S. Series_Information: Series_Name: The Geology of North America Issue_Identification: v. I-2, 632 p. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1988 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DNAG-I Source_Contribution: Line work and attributes. Source_Information: Source_Citation: Citation_Information: Originator: Silver, L.T. (ed.) Originator: Schultz, P.H. (ed.) Publication_Date: 1982 Title: Geological Implications of Impacts of Large Asteroids and Comets on the Earth: Geological Society of America Special Paper 190, 528 p. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1982 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: SP190 Source_Contribution: Impact structures Source_Information: Source_Citation: Citation_Information: Originator: Sloss, L.L. (ed.) Publication_Date: 1988 Title: Sedimentary Cover, North American Craton, U.S Series_Information: Series_Name: The Geology of North America Issue_Identification: v. D-2, 506 p. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1988 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DNAG-D Source_Contribution: Line work and attributes. Process_Step: Process_Description: The geologic unit polygons (geolgym075), faults (faultl075), glacial limit lines (glacal075), boundaries of metamorphic provinces (metfacp075), calderas (calderl075), and impact structures (impactx075) were created using the following procedures: Data were compiled on scale-stable clear film at various scales. The lines and points were then digitized and georeferenced using the computer program GSMCAD, written by Van S. Williams, USGS. The program is available at no charge at . Polygons, lines, and point features were attributed in GSMCAD. Source_Used_Citation_Abbreviation: DNAG-A Source_Used_Citation_Abbreviation: DNAG-G Source_Used_Citation_Abbreviation: DNAG-F Source_Used_Citation_Abbreviation: GMUS Source_Used_Citation_Abbreviation: DNAG-C Source_Used_Citation_Abbreviation: DNAG-J Source_Used_Citation_Abbreviation: DNAG-I Source_Used_Citation_Abbreviation: SP190 Source_Used_Citation_Abbreviation: DNAG-D Process_Date: 1999 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: John C. Reed, Jr. Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address: Mail Stop 913, Box 25046, Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-1276 Contact_Facsimile_Telephone: 303-236-0214 Contact_Electronic_Mail_Address: jreed@usgs.gov Process_Step: Process_Description: The data were exported from GSMCAD into Arc/INFO Generate format, and were imported into Arc/INFO coverages using AML routines provided with GSMCAD. Process_Date: 1999 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: John C. Reed, Jr. Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address: Mail Stop 913, Box 25046, Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-1276 Contact_Facsimile_Telephone: 303-236-0214 Contact_Electronic_Mail_Address: jreed@usgs.gov Process_Step: Process_Description: Errors in polygon labeling were checked using the LABELERROR routine in ARCPLOT. Node errors were checked using ARCEDIT routines. Colored plots were made to make final checks of the overall coverages. Process_Date: 1999 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Charles A. Bush Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address: Mail Stop 913, Box 25046, Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-4723 Contact_Facsimile_Telephone: 303-236-0214 Contact_Electronic_Mail_Address: cbush@usgs.gov Process_Step: Process_Description: Supplementary graphical coverages were created for the faults (faultgl075) and glacial limit lines (glacagl075). These are the same as faultl075 and glacal075 except decoration lines have been added for display purposes. Another coverage was created containing arcs that represent text labels for the polygons (geotxtl075). This is also for display purposes. Process_Date: 1999 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Charles A. Bush Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address: Mail Stop 913, Box 25046, Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-4723 Contact_Facsimile_Telephone: 303-236-0214 Contact_Electronic_Mail_Address: cbush@usgs.gov 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: String SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0000094433083 Longitude_Resolution: 0.0000094433083 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Fault, with line decorations (described by faultgl075.aat or faultgl075.dbf) Entity_Type_Definition: A fault is a fracture or fracture zone in the Earth's crust along which one side moves with respect to the other. This data set includes both the faults and the line decorations. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: 1-dimensional element that may or may not surround a 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Fnode# Attribute_Definition: Internal sequence number of the from-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 50400 Attribute: Attribute_Label: Tnode# Attribute_Definition: Internal sequence number of the to-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 50401 Attribute: Attribute_Label: Lpoly# Attribute_Definition: Internal sequence number of the left polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Rpoly# Attribute_Definition: Internal sequence number of the right polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Length Attribute_Definition: The length of the line in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 150.188 Range_Domain_Maximum: 430125.406 Attribute: Attribute_Label: Faultgl075# or Faultgl# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 69825 Attribute: Attribute_Label: Faultgl075-id or Faultgl-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4 Range_Domain_Maximum: 71912 Attribute: Attribute_Label: Code Attribute_Definition: The type of fault represented in the data set. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 12 Enumerated_Domain_Value_Definition: Fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 13 Enumerated_Domain_Value_Definition: Thrust fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 14 Enumerated_Domain_Value_Definition: Normal fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 16 Enumerated_Domain_Value_Definition: Low angle detachment fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 17 Enumerated_Domain_Value_Definition: Inferred fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Text Attribute_Definition: The type of fault. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Fault Enumerated_Domain_Value_Definition: A fault is a fracture or fracture zone in the Earth's crust along which one side moves with respect to the other. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Thrust fault Enumerated_Domain_Value_Definition: A thrust fault is a gently inclined fault (less than 45 degrees) along which the principal movement has been more nearly horizontal than vertical. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Normal fault Enumerated_Domain_Value_Definition: A normal fault is a steeply inclined fault (more than 45 degrees) where rocks above the fault have moved down relative to those below the fault. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Low angle detachment fault Enumerated_Domain_Value_Definition: A large, shallowly-inclined normal fault formed during extension of the Earth's crust. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Inferred fault Enumerated_Domain_Value_Definition: A fault that is assumed to be at the specified location. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Detailed_Description: Entity_Type: Entity_Type_Label: Fault, without line decorations (described by faultl075.aat or Faultl075.dbf) Entity_Type_Definition: A fault is a fracture or fracture zone in the Earth's crust along which one side moves with respect to the other. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: 1-dimensional element that may or may not surround a 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Fnode# Attribute_Definition: Internal sequence number of the from-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute: Attribute_Label: Tnode# Attribute_Definition: Internal sequence number of the to-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 4 Attribute: Attribute_Label: Lpoly# Attribute_Definition: Internal sequence number of the left polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Rpoly# Attribute_Definition: Internal sequence number of the right polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Length Attribute_Definition: The length of the line in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2337.81227 Range_Domain_Maximum: 583196.36613 Attribute: Attribute_Label: Faultl075# or Faultl# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1259 Attribute: Attribute_Label: Faultl075-id or Faultl-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 83 Range_Domain_Maximum: 1603 Attribute: Attribute_Label: Code Attribute_Definition: The type of fault represented in the data set. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 12 Enumerated_Domain_Value_Definition: Fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 13 Enumerated_Domain_Value_Definition: Thrust fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 14 Enumerated_Domain_Value_Definition: Normal fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 16 Enumerated_Domain_Value_Definition: Low angle detachment fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 17 Enumerated_Domain_Value_Definition: Inferred fault Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Text Attribute_Definition: The type of fault. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Fault Enumerated_Domain_Value_Definition: A fault is a fracture or fracture zone in the earth's crust along which one side moves with respect to the other. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Thrust fault Enumerated_Domain_Value_Definition: A thrust fault is a gently inclined fault (less then 45 degrees) along which the principal movement has been more nearly horizontal than vertical. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Normal fault Enumerated_Domain_Value_Definition: A normal fault is a steeply inclined fault (more than 45 degrees) where rocks above the fault have moved down relative to those below the fault. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Low angle detachment fault Enumerated_Domain_Value_Definition: A large, shallowly-inclined normal fault formed during extension of the Earth's crust. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Inferred fault Enumerated_Domain_Value_Definition: A fault that is assumed to be at the specified location. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Detailed_Description: Entity_Type: Entity_Type_Label: Glacial limit line, with line decorations (described by glacagl075.aat or glacagl075.dbf) Entity_Type_Definition: A line showing the southern limit of Late Wisconsin and pre-Late Wisconsin glaciation in the United States. For display purposes, tics are included along the line for line decorations. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: 1-dimensional element that may or may not surround a 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Fnode# Attribute_Definition: Internal sequence number of the from-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 2140 Attribute: Attribute_Label: Tnode# Attribute_Definition: Internal sequence number of the to-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 2141 Attribute: Attribute_Label: Lpoly# Attribute_Definition: Internal sequence number of the left polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Rpoly# Attribute_Definition: Internal sequence number of the right polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Length Attribute_Definition: The length of the line in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.990 Range_Domain_Maximum: 1291295.750 Attribute: Attribute_Label: Glacagl075# or Glacagl# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1098 Attribute: Attribute_Label: Glacagl075-id or Glacagl-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1074 Attribute: Attribute_Label: Code Attribute_Definition: Values representing the limits of glacial advance at two selected times. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Wisconsin glacial limit. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 2 Enumerated_Domain_Value_Definition: Pre-Wisconsin glacial limit. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Glacial_limit Attribute_Definition: The type of glacial limit line. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wisconsin Glacial Limit Line Enumerated_Domain_Value_Definition: A line showing the maximum extent of glaciation at late Wisconsin time (35,000 to 11,150 years ago). Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Pre-Wisconsin Glacial Limit Line Enumerated_Domain_Value_Definition: A line showing the maximum extent of glaciation prior to Late Wisconsin time. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Detailed_Description: Entity_Type: Entity_Type_Label: Glacial limit line, without line decorations (described by glacal075.aat or glacal075.dbf) Entity_Type_Definition: A line showing the southern limit of Late Wisconsin and pre-Late Wisconsin glaciation in the United States. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: 1-dimensional element that may or may not surround a 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Fnode# Attribute_Definition: Internal sequence number of the from-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Tnode# Attribute_Definition: Internal sequence number of the to-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Lpoly# Attribute_Definition: Internal sequence number of the left polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Rpoly# Attribute_Definition: Internal sequence number of the right polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Length Attribute_Definition: The length of the line in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5125.622 Range_Domain_Maximum: 1291295.861 Attribute: Attribute_Label: Glacal075 or Glacal# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 91 Attribute: Attribute_Label: Glacal075-id or Glacal-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 91 Attribute: Attribute_Label: Code Attribute_Definition: Values representing the limits of glacial advance at two selected times. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Wisconsin glacial limit. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 2 Enumerated_Domain_Value_Definition: Pre-Wisconsin glacial limit. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Glacial_limit Attribute_Definition: The type of glacial limit line. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wisconsin Glacial Limit Line Enumerated_Domain_Value_Definition: A line showing the maximum extent of glaciation at late Wisconsin time (35,000 to 11,150 years ago). Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Pre-Wisconsin Glacial Limit Line Enumerated_Domain_Value_Definition: A line showing the maximum extent of glaciation prior to Late Wisconsin time. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Detailed_Description: Entity_Type: Entity_Type_Label: Text labels (described by geotxtl075.aat or geotxtl075.dbf) Entity_Type_Definition: Text labels for the geology coverage, represented as lines. Standard geologic symbols are included. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: 1-dimensional element that may or may not surround a 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Fnode# Attribute_Definition: Internal sequence number of the from-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 131 Attribute: Attribute_Label: Tnode# Attribute_Definition: Internal sequence number of the to-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 132 Attribute: Attribute_Label: Lpoly# Attribute_Definition: Internal sequence number of the left polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Rpoly# Attribute_Definition: Internal sequence number of the right polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Length Attribute_Definition: The length of the line in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2373.982 Range_Domain_Maximum: 117346.711 Attribute: Attribute_Label: Geotxtl075# or Geotxtl# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1206 Attribute: Attribute_Label: Geotxtl075-id or Geotxtl-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1105 Detailed_Description: Entity_Type: Entity_Type_Label: Areas of amphibolite or blueschist facies metamorphism (described by metfacp075.pat or metfacp075.dbf). Entity_Type_Definition: Metamorphism is the alteration of texture or composition in a rock by pressure, heat, or water. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polygon Enumerated_Domain_Value_Definition: 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Area Attribute_Definition: The size of the shape in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 21692.355 Range_Domain_Maximum: 153870630912 Attribute: Attribute_Label: Perimeter Attribute_Definition: The perimeter of the shape in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1355.694 Range_Domain_Maximum: 5494734.500 Attribute: Attribute_Label: Metfacp075# or Metfacp# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 123 Attribute: Attribute_Label: Metfacp075-id or Metfacp-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 122 Attribute: Attribute_Label: Metam-fac Attribute_Definition: The type of facies metamorphism. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: An area where metamorphism is not mapped. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Amphibolite Facies Metamorphism Enumerated_Domain_Value_Definition: A metamorphic mineral assemblage formed under medium temperature and medium to high pressure. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Blueschist Facies Metamorphism Enumerated_Domain_Value_Definition: A metamorphic mineral assemblage formed under low temperature and high pressure. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Detailed_Description: Entity_Type: Entity_Type_Label: Calderas and impact structures (described by calderl075.aat or calderl075.dbf) Entity_Type_Definition: Outlines of major calderas and impact structures. A caldera is a large, generally circular depression at the summit of a volcano formed when magma is withdrawn or erupted from a shallow underground magma reservoir. An impact structure is a crater formed by the impact of a meteoroid, asteroid, or comet with the Earth. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: 1-dimensional element that may or may not surround a 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Fnode# Attribute_Definition: Internal sequence number of the from-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 47 Attribute: Attribute_Label: Tnode# Attribute_Definition: Internal sequence number of the to-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 47 Attribute: Attribute_Label: Lpoly# Attribute_Definition: Internal sequence number of the left polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Rpoly# Attribute_Definition: Internal sequence number of the right polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: Length Attribute_Definition: The length of the line in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1600.429 Range_Domain_Maximum: 302426.781 Attribute: Attribute_Label: Calderl075# or Calderl# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 63 Attribute: Attribute_Label: Calderl075-id or Calderl-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 104 Range_Domain_Maximum: 49926 Attribute: Attribute_Label: Code Attribute_Definition: The type of caldera boundary or impact structure extent. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 17 Enumerated_Domain_Value_Definition: Caldera Boundary Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 18 Enumerated_Domain_Value_Definition: Caldera Boundary, uncertain Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 19 Enumerated_Domain_Value_Definition: Extent of large, buried impact structure. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Structure_type Attribute_Definition: The type of structure Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Caldera Boundary Enumerated_Domain_Value_Definition: The areal extent of the caldera at the surface. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Caldera Boundary, uncertain Enumerated_Domain_Value_Definition: The estimated areal extent of the caldera. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Extent of large, buried impact structure Enumerated_Domain_Value_Definition: The estimated extent of the impact structure. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Detailed_Description: Entity_Type: Entity_Type_Label: Impact site (described by impactx075.pat or impactx075.dbf) Entity_Type_Definition: The center of an impact structure. An impact structure is a crater formed by the impact of a meteoroid, asteroid, or comet with the Earth. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Point Enumerated_Domain_Value_Definition: 0-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Area Attribute_Definition: The size of the shape in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000 Range_Domain_Maximum: 0.000 Attribute: Attribute_Label: Perimeter Attribute_Definition: The perimeter of the shape in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000 Range_Domain_Maximum: 0.000 Attribute: Attribute_Label: Impactx075# or Impactx# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 32 Attribute: Attribute_Label: Impactx075-id or Impactx-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 47 Range_Domain_Maximum: 78 Attribute: Attribute_Label: Structure_types Attribute_Definition: Indicates whether site is impacted or suspected. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Impact Structure Enumerated_Domain_Value_Definition: A site where the structure has been positively determined to have been created by the impact of a meteoroid, asteroid, or comet with the Earth. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Suspected impact structure Enumerated_Domain_Value_Definition: A site where the structure may have been created by the impact of a meteoroid, asteroid, or comet with the Earth. Positive determination of the means of formation has not been made Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Id_num Attribute_Definition: The identification number for the impact structure. Suspected impact structures have a value of 0. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 17 Attribute: Attribute_Label: Name Attribute_Definition: The name or location of the impact site. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: There is no predefined set of impact structure names or locations. Attribute: Attribute_Label: Latitude Attribute_Definition: The latitude at the center of the impact site, in degrees and minutes. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 29(02' Range_Domain_Maximum: 47(36' Attribute: Attribute_Label: Longitude Attribute_Definition: The longitude at the center of the impact site, in degrees and minutes. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 72(50' Range_Domain_Maximum: 111(01' Attribute: Attribute_Label: Diameter_m Attribute_Definition: The diameter of the impact site in miles. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 60.00 Attribute: Attribute_Label: Age Attribute_Definition: The age of the impact site in years. (Ma indicates a million years. For example, 100 Ma equals 100,000,000 years.) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: There is no predefined set of ages. Attribute: Attribute_Label: Remarks Attribute_Definition: The basis of site identification. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: There is no predefined set of remarks. Detailed_Description: Entity_Type: Entity_Type_Label: Geologic unit (described by geolgym075.pat or geolgyp075.dbf) Entity_Type_Definition: Rock and material that lies at or near the land surface, but not surficial materials such as soils, alluvium, and glacial deposits. The units are defined by sedimentary, volcanic, plutonic, or metamorphic rock types and by their geologic age. The Text attribute is included to provide a method for generating the appropriate map symbols for display and publication purposes. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polygon Enumerated_Domain_Value_Definition: 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Area Attribute_Definition: The size of the shape in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4070.129 Range_Domain_Maximum: 566153969664 Attribute: Attribute_Label: Perimeter Attribute_Definition: The perimeter of the shape in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 540.234 Range_Domain_Maximum: 19685880.000 Attribute: Attribute_Label: Geolgyp075# or Geolgyp# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 2778 Attribute: Attribute_Label: Geolgyp075-id or Geolgyp-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 3500 Attribute: Attribute_Label: Geology Attribute_Definition: The standard geologic symbol for the rock type. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: (See table under Text) Enumerated_Domain_Value_Definition: (See table under Text) Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Mapunit_sy Attribute_Definition: A letter code representing the geology. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: (See table under Text) Enumerated_Domain_Value_Definition: (See table under Text) Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Text Attribute_Definition: The value recognized by the program GSMCAD and used to create the special font for geologic symbols, e.g. %217 represents the geologic symbol for mesozoic. Because standard fonts available in ARC/INFO do not have the special symbols used for geologic time periods, the symbols were created in GSMCAD and exported as arcs. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: (See table below) Enumerated_Domain_Value_Definition: The values for Text are listed below, along with the associated values for the Mapunit_sy attribute and the values for the Geology attribute. > >MAPUNIT_SY TEXT GEOLOGY >------------------------------------------------------------------- >Q Q Quaternary deposits >nT nT Neogene sedimentary rocks >pgT pgT Paleogene sedimentary rocks >KT KT Cretaceous and Tertiary sedimentary rocks >Mz %217 Mesozoic sedimentary rocks >lMz l%217 Lower Mesozoic (Triassic and Jurassic) > sedimentary rocks >uPz u%216 Upper Paleozoic (Pennsylvanian and > Permian) sedimentary rocks >PzMz %216%217 Paleozoic and Mesozoic sedimentary rocks >mPz m%216 Middle Paleozoic (Silurian, Devonian, and > Mississippian) sedimentary rocks >Pz %216 Paleozoic sedimentary rocks >lPz l%216 Lower Paleozoic (Cambrian and Ordovician) > sedimentary rocks >ZPz Z%216 Upper Proterozoic and Lower Paleozoic > sedimentary rocks >Z Z Upper Proterozoic sedimentary rocks >Y Y Middle Proterozoic sedimentary rocks >P_ %215 Proterozoic sedimentary rocks >X X Lower Proterozoic sedimentary rocks >A A Archean sedimentary rocks >K K Cretaceous sedimentary rocks >Qv Qv Quaternary volcanic rocks >nTv nTv Neogene volcanic rocks >pgTv pgTv Paleogene volcanic rocks >Kv Kv Cretaceous volcanic rocks >Mzv %217v Mesozoic volcanic rocks >lMzv l%217v Lower Mesozoic (Triassic and Jurassic) > volcanic rocks >PzMzv %216%217v Paleozoic and Mesozoic volcanic rocks >mPzv m%216v Middle Paleozoic volcanic rocks >lPzv l%216v Lower Paleozoic volcanic rocks >ZPzv Z%216v Upper Proterozoic and Lower > Paleozoic volcanic rocks >Zv Zv Upper Proterozoic volcanic rocks >Yv Yv Middle Proterozoic volcanic rocks >Xv Xv Lower Proterozoic volcanic rocks >pgTg pgTg Paleogene granitic rocks >pgTi pgTi Paleogene intermediate rocks >pgTm pgTm Paleogene mafic rocks >KTg KTg Cretaceous and Tertiary granitic rocks >Kg Kg Cretaceous granitic rocks >Mzg %217g Mesozoic granitic rocks >lMzg l%217g Early Mesozoic granitic rocks >lMzm l%217m Early Mesozoic mafic rocks >lMzu l%217u Early Mesozoic ultramafic rocks >uPzg u%216g Late Paleozoic granitic rocks >mPzg m%216g Middle Paleozoic granitic rocks >mPzm m%216m Middle Paleozoic mafic rocks >lPzg l%216g Early Paleozoic granitic rocks >ZPzg Z%216g Late Proterozoic and Early Paleozoic > granitic rocks >ZPzm Z%216m Late Proterozoic and Early Paleozoic > mafic rocks >P_g %215g Proterozoic granitic rocks >Yg Yg Middle Proterozoic granitic rocks >Ym Ym Middle Proterozoic mafic rocks >Ya Ya Middle Proterozoic anorthositic rocks >Xg Xg Early Proterozoic granitic rocks >Xm Xm Early Proterozoic mafic rocks >Ag Ag Archean granitic rocks >Zg Zg Late Proterozoic granitic rocks >n n Gneiss, age uncertain >ZPzn Z%216n Late Proterozoic and Early Paleozoic gneiss >Yn Yn Middle Proterozoic gneiss >Xn Xn Early Proterozoic gneiss >An An Archean gneiss >PzMzm %216%217m Paleozoic and Mesozoic mafic rocks >Tv Tv Tertiary volcanic rocks >nTg nTg Neogene granitic rocks >H2o H2o Water body > Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Geoshade Attribute_Definition: The shade pattern number from the ARC/INFO shadeset geoshade.shd. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 231 Attribute: Attribute_Label: Red Attribute_Definition: Percentage values used to produce colors. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Attribute: Attribute_Label: Green Attribute_Definition: Percentage values used to produce colors. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Attribute: Attribute_Label: Blue Attribute_Definition: Percentage values used to produce colors. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: Rock or geologic deposit boundary line (described by geolgym075.aat or geolgyl075.dbf) Entity_Type_Definition: Line separating different geologic units. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: 1-dimensional element that may or may not surround a 2-dimensional element. Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Fnode# Attribute_Definition: Internal sequence number of the from-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 9432 Attribute: Attribute_Label: Tnode# Attribute_Definition: Internal sequence number of the to-node. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 9432 Attribute: Attribute_Label: Lpoly# Attribute_Definition: Internal sequence number of the left polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 2778 Attribute: Attribute_Label: Rpoly# Attribute_Definition: Internal sequence number of the right polygon. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 2768 Attribute: Attribute_Label: Length Attribute_Definition: The length of the line in coverage units. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.762 Range_Domain_Maximum: 1571543.250 Attribute: Attribute_Label: Geolgyl075# or Geolgyl# Attribute_Definition: Internal feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 10599 Attribute: Attribute_Label: Geolgyl075-id or Geolgyl-id Attribute_Definition: User-assigned feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 49939 Attribute: Attribute_Label: Code Attribute_Definition: The type of geologic boundary code. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 11 Enumerated_Domain_Value_Definition: Contact Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 12 Enumerated_Domain_Value_Definition: Fault (copied in fault file) Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 13 Enumerated_Domain_Value_Definition: Thrust fault (copied in fault file) Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 14 Enumerated_Domain_Value_Definition: Normal fault (copied in fault file) Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 16 Enumerated_Domain_Value_Definition: Low angle detachment fault (copied in fault file) Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 21 Enumerated_Domain_Value_Definition: Shoreline Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: 23 Enumerated_Domain_Value_Definition: International boundary Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Text Attribute_Definition: The type of geologic boundary. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Contact Enumerated_Domain_Value_Definition: The surface where two different kinds of rocks meet. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Fault (copied in fault file) Enumerated_Domain_Value_Definition: A fault is a fracture or fracture zone in the Earth's crust along which one side moves with respect to the other. This data set includes both the faults and the line decorations. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Thrust fault (copied in fault file) Enumerated_Domain_Value_Definition: A thrust fault is a gently inclined fault (less then 45 degrees) along which the principal movement has been more nearly horizontal than vertical. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Normal fault (copied in fault file) Enumerated_Domain_Value_Definition: A normal fault is a steeply inclined fault (more than 45 degrees) where rocks above the fault have moved down relative to those below the fault. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Low angle detachment fault (copied in fault file) Enumerated_Domain_Value_Definition: A large, shallowly-inclined normal fault formed during extension of the Earth's crust. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: Shoreline Enumerated_Domain_Value_Definition: The line where geologic map units are terminated by a body of water. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Enumerated_Domain: Enumerated_Domain_Value: International boundary Enumerated_Domain_Value_Definition: The line where geologic map units are terminated by an international boundary. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing Address: MS 902, Box 25046, Denver Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-0953 Contact_Electronic_Mail_Address: gellis@usgs.gov Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE File_Decompression_Technique: gzipped tar file Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Geologic_Map_of_the_US Digital_Form: Digital_Transfer_Information: Format_Name: ESRI Shapefile Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Geologic_Map_of_the_US Digital_Form: Digital_Transfer_Information: Format_Name: SDTS Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Geologic_Map_of_the_US Fees: There is no charge for download of these files. Metadata_Reference_Information: Metadata_Date: 20010328 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Charles A. Bush Contact_Position: Geophysicist Contact_Address: Address_Type: mailing and physical address Address: MS 913, Box 25046, Room 1512, Building 25, Denver Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80025 Country: USA Contact_Voice_Telephone: 303-236-4723 Contact_Facsimile_Telephone: 303-236-0214 Contact_Electronic_Mail_Address: cbush@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None