Identification_Information: Citation: Citation_Information: Originator: Connie L. Dicken Originator: Shana G. Pimley Originator: William F. Cannon Publication_Date: 2001 Title: Precambrian Basement Map of the Northern Midcontinent, U.S.A. - A Digital Representation of the 1990 P.K. Sims Map. Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: USGS Open-File Report 2001-021 Issue_Identification: USGS OFR 2001-021 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: unknown Larger_Work_Citation: Citation_Information: Originator: P.K. Sims Publication_Date: 1990 Title: Precambrian Basement Map of the Northern Midcontinent, U.S.A. Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Investigations Series Issue_Identification: Map I-1853-A Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: Prepared in cooperation with the Geological Surveys of Arkansas, Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, Oklahoma, South Dakota, Tennessee, and Wisconsin Description: Abstract: This CD contains files that provide a digital version of USGS map I-1853-A, Precambrian basement map of the northern mid-continent, USA, compiled by P.K. Sims and published in 1990. Purpose: The purpose is to make the original map data available digitally. There are no updates or modifications for this map so the information is from the original published map. Supplemental_Information: The coverages that are included are as follows: geology, faults, structure, drill_holes, struct_hash, and latlong. Geology, faults, structure, struct_hash and drill_holes were all generated from the stable base material. Latlong is a coverage that was generated in Arc/Info to overlay the coverage area for reference. Data_Set_Structure: Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: geology.e00 Part_Description: Polygon coverage that contains the following attributes: area, perimeter, geology#, geology-id, id, map_symbol, unit_name, age1, age2, terrane, rad_age, rk_class1, rk_subcl1, lith1, rk_class2, rk_subcl2, lith2, rk_class3, rk_subcl3, and lith3 Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: faults.e00 Part_Description: line coverage that contains fault names. Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: drill_holes.e00 Part_Description: location of well holes Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: structure.e00 Part_Description: line coverage that contains structure contour data. Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: latlong.e00 Part_Description: line coverage that contains the latitude and longitude lines for the coverage area. Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: struct_hash.e00 Part_Description: line coverage contains the hash marks that go along with the structure contours to indicate depressions. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20001025 Ending_Date: 20001221 Currentness_Reference: publication date Status: Progress: complete Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -100.00 East_Bounding_Coordinate: -88.00 North_Bounding_Coordinate: 46.00 South_Bounding_Coordinate: 36.00 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Precambrian basement Theme_Keyword: geology Theme_Keyword: geologic map Theme_Keyword: structure Theme_Keyword: contour Theme_Keyword: faults Place: Place_Keyword_Thesaurus: none Place_Keyword: United States Place_Keyword: Northern Midcontinent Place_Keyword: Arkansas Place_Keyword: Illinois Place_Keyword: Iowa Place_Keyword: Kansas Place_Keyword: Minnesota Place_Keyword: Missouri Place_Keyword: Nebraska Place_Keyword: Oklahoma Place_Keyword: South Dakota Place_Keyword: Tennessee Place_Keyword: Wisconsin Place_Keyword: North Central United States Access_Constraints: none Use_Constraints: These data are not to be used at scales greater than 1:1,000,000 Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: William F. Cannon Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing Address: USGS National Center, 12201 Sunrise Valley Dr., MS 954 City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: United States of America Contact_Voice_Telephone: (703) 648-6345 Contact_Facsimile_Telephone: (703) 648-6252 Contact_Electronic_Mail_Address: wcannon@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: correlation.tif Browse_Graphic_File_Description: Correlation diagram that has the geologic map units with approximate ages. Browse_Graphic_File_Type: TIFF- Tagged Image File Format Browse_Graphic_File_Name: index_map.tif Browse_Graphic_File_Description: Shows the location of the coverage area with respect to the conterminous United States. Browse_Graphic_File_Type: TIFF- Tagged Image File Format Browse_Graphic_File_Name: map_units.tif Browse_Graphic_File_Description: Legend that contains the description and symbols of the geologic map units for the coverage area. Browse_Graphic_File_Type: TIFF- Tagged Image File Format Browse_Graphic_File_Name: tectonic_index.tif Browse_Graphic_File_Description: Simplified tectonic map of the Precambrian basement rocks, north-central United States. Browse_Graphic_File_Type: TIFF- Tagged Image File Format Data_Set_Credit: P.K. Sims Native_Data_Set_Environment: Windows NT, 4.0, Intel ArcInfo 7.2.2 and 8.0.1 ArcView 3.1 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All attribute values were assigned based on the original published map. All attributes were checked manually against the paper map for errors and corrected as needed. Logical_Consistency_Report: All internal polygons were checked for closure with vendor software and on hard copy plots. Overshoots and undershoots have been deleted or corrected as appropriate. Completeness_Report: none applicable Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The original published map contained projection error which resulted in error in the digital version of the map. When checking the stable base against a fishnet grid with exact latitude and longitude for this coverage area, there were discrepancies. The error was largest at about 2.5 km. This was a large error, so rubbersheeting was required in Arc/Info thus reducing the error greatly. The geology, fault, and structure coverage now align together as they should. Due to rubbersheeting, error is less near the degree marks and increasing in error toward the center. This is true for the geology coverage, fault coverage and structure coverage. The drill hole data was NOT rubbersheeted, so the error remains with the well data set. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: P.K. Sims Publication_Date: 1990 Title: Precambrian Basement Map of the Northern Midcontinent, U.S.A. Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Investigation Series Issue_Identification: Map I-1853-A Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Source_Scale_Denominator: 1,000,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1990 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: midcont paper map Source_Contribution: provided all the data for the digital file Process_Step: Process_Description: After receiving the paper map and its projected scale-stable material for the drill hole data made from the original production, the scale-stable material was scanned at 300 dpi. Because the scale-stable material was wider than the scanner (40" scanner), the bottom corners were scanned in separately and later hand digitized to the coverage. The drill hole stable material was a negative and had to be inverted in order to extract the data from the scanned image. The image was then converted to grid in Arc/Info. Gridpoint was used and would not produce the correct points from the grid so an alternate way was used, gridpoly. The polygon coverage was then build using points and a point coverage was created. Some points had to be manually moved in ArcEdit. Next the coverage had to be georeferenced. A tic file was generated and projected with the reference points of the map. Projection Lambert Units METERS Datum NAD27 Spheroid CLARKE1866 parameters: First Standard Parallel = 33 00 00 Second Standard Parallel = 45 00 00 Central Meridian = -94 00 00 Reference Latitude = 0 0 0 False easting (meters) = 0.00000 False northing (meters) = 0.00000 The point coverage was then transformed to the projected tic file and registered. The point coverage was then reprojected to geographic coordinates. Source_Used_Citation_Abbreviation: Midcont paper map and scale-stable material used to create midcont paper map, and drill hole coverage Process_Date: 20001030 Process_Step: Process_Description: After receiving the paper map and its projected scale-stable material for the structure data made from the original production, the scale-stable material was scanned at 300 dpi. Because the scale-stable material was wider than the scanner (40" scanner), the bottom corners were scanned in separately and later hand digitized to the coverage. The scanned image was then converted to a grid in Arc/Info and the grid was converted to lines. The line coverage had to be georeferenced. First tics on the line coverage were placed on reference points in the coverage. A tic file was generated and projected with the reference points of the map. Projection Lambert Units METERS Datum NAD27 Spheroid CLARKE1866 parameters: First Standard Parallel = 33 00 00 Second Standard Parallel = 45 00 00 Central Meridian = -94 00 00 Reference Latitude = 0 0 0 False easting (meters) = 0.00000 False northing (meters) = 0.00000 The line coverage was then transformed to the projected tic file and registered. The line coverage was then reprojected to geographic coordinates. Source_Used_Citation_Abbreviation: Midcont paper map and scale-stable material used to create midcont paper map, and structure coverage Process_Date: 20001115 Process_Step: Process_Description: The structure coverage contained hash marks that indicate a depression in the structure. They were deleted from the structure coverage and copied into a new coverage called struct_hash and have contour values of 999. Source_Used_Citation_Abbreviation: structure coverage Process_Date: 20001116 Process_Step: Process_Description: After receiving the paper map and the geology and faults scale-stable material made from the original production, reference points were drawn with an ultra fine point marker in the corners on the back of the stable material. The scale-stable material was scanned backwards at 300 dpi to avoid scanning the extraneous information on the front then inverted back to the original direction. Because the scale-stable material was wider than the scanner (40" scanner), the bottom corners were scanned in separately and later hand digitized to the coverage. Source_Used_Citation_Abbreviation: Midcont paper map and scale-stable material used to create midcont paper map, and geology and fault coverages Process_Date: 20001121 Process_Step: Process_Description: Generated an Arc/Info coverage from the scanned projected image by, first, converting the image to a grid in ArcToolbox. Then in ARC/Info, the grid was converted into a line coverage and the tics were moved to align with the reference points in the arc coverage using ArcMap. A new tic file was generated then projected with the following criteria: Projection Lambert; Datum NAD27; Units METERS; Spheroid CLARKE1866 parameters: First Standard Parallel = 33 00 00 Second Standard Parallel = 45 00 00 Central Meridian = -94 00 00 Reference Latitude = 0 0 0 False easting (meters) = 0.00000 False northing (meters) = 0.00000 The new projected tic file was used to transform and adjust the projected line coverage for georeferencing. The new covered was now referenced to the Lambert parameters above and then reprojected to geographic coordinates. Source_Used_Citation_Abbreviation: geology and fault coverage Process_Date: 20001121 Process_Step: Process_Description: The bottom corners of geology, fault, and structure coverages were heads-up digitized into the main coverage to create one whole coverage (when scanned at the beginning, scanner was not large enough to get entire image so the corners were added here). The coverages were compared against one another, the original map, and a grid projected in Lambert Conformal Conic to determine the accuracy. However, there was an error in the stable base material so the coverages did not align. In order to decrease the error, the coverages were rubbersheeted to a grid. where a link was made at every degree in the coverages (143 links) and then adjusted in Arc/Info. This greatly reduced the error and the coverages aligned. The drill_hole point coverage was NOT rubbersheeted due to no reference locations. So the error remains on the drill hole coverage. So error is least at the link locations (exact degree marks) and greater as one moves away from the degree. Source_Used_Citation_Abbreviation: geology, faults, drill holes, and structure coverages Process_Date: 20001128 Process_Step: Process_Description: The coverage with the faults was edited using ArcEdit by deleting extraneous arcs and connecting broken arcs. The edited coverage was copied. One copy of the fault coverage was cleaned (with the minimum fuzzy tolerance and dangle length Arc/Info accepted) and built to create polygon topology. An ID column was added to the polygon attribute table. In ArcEdit, each polygon was tagged with an ID number that corresponded to its lithology. The coverage was printed and compared to the paper map. Corrections were made when needed. Adjacent polygons with the same ID were merged to create one polygon. An excel file of an attribute table was received by William F. Cannon. The file was converted into a database file. Column widths were adjusted in order to retain the entire field information. This table was joined in ARC/Info to the polygon attribute table based on the ID number. The coverage was exported in ARC/Info which created the .e00 file. The ARC/Info coverage was converted into a shapefile in ArcView. The other copy of the fault coverage was built in ARC/Info to create arc topology. An ID column was added to the arc attribute table and each arc was tagged with an ID number that corresponded to the name of the fault using ArcEdit. The tagged ID's were checked for accuracy and corrections were made appropriately. Some of the tics on the faults did not scan well. Therefore, they were added separately. An excel file of an attribute table was received by William F. Cannon. The file was converted into a database file. Column widths were adjusted in order to retain the entire field information. This table was joined in ARC/Info to the arc attribute table based on the ID number. The coverage was exported in ARC/Info which created the .e00 file. The ARC/Info coverage was converted into a shapefile in ArcView. Source_Used_Citation_Abbreviation: geology and faults coverage Process_Date: 20001129-20001214 Process_Step: Process_Description: The structure coverage was compared again the base material and the edges were edited in ArcEdit to fit the boundary lines. Minimal editing was needed. The lines also were tagged with respective contour values from the midcont paper map. Source_Used_Citation_Abbreviation: structure coverage Process_Date: 20001205 Process_Step: Process_Description: After all the coverages were edited and all corrections were made, they were brought into ArcView to see how well they aligned. The geology, fault and structure coverages matched very well. So, all the coverages were converted to ArcView shapefiles and a project was created. Avl files were created for the shapefiles to keep the data as close to the color scheme as possible as the midcont paper map. Source_Used_Citation_Abbreviation: geology, faults, drill holes and structure coverages Process_Date: 20001207 Process_Step: Process_Description: After the shapefiles were arranged into a project, county and state base data was added for reference. Both county and state data was clipped using an extension in ArvView to fit the desired coverage area. The files were edited because just the basic data was needed. Source_Used_Citation_Abbreviation: geology, state_bdry, and counties Process_Date: 20001208 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: point SDTS_Point_and_Vector_Object_Type: string SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00000125 Longitude_Resolution: 0.00000125 Geographic_Coordinate_Units: Decimal Degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: geology.pat Entity_Type_Definition: Polygon attribute table for geology coverage. The attributes address the identification, age, and lithology of the rock units. Entity_Type_Definition_Source: Arc/Info Attribute: Attribute_Label: ID Attribute_Definition: unique identifier for polygons Attribute_Definition_Source: midcont paper map Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 50 Attribute: Attribute_Label: MAP_SYMBOL Attribute_Definition: abbreviation for the geologic units as used on the midcont paper map Attribute_Definition_Source: midcont paper map Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Agn Enumerated_Domain_Value_Definition: migmatitic and granitoid gneiss Enumerated_Domain: Enumerated_Domain_Value: Unmapped Enumerated_Domain_Value_Definition: insufficient data Enumerated_Domain: Enumerated_Domain_Value: Wg Enumerated_Domain_Value_Definition: granite Enumerated_Domain: Enumerated_Domain_Value: Wgnm Enumerated_Domain_Value_Definition: mylonitic gneiss and amphibolite Enumerated_Domain: Enumerated_Domain_Value: Wgr Enumerated_Domain_Value_Definition: granitoid rocks (Archean) Enumerated_Domain: Enumerated_Domain_Value: Wi Enumerated_Domain_Value_Definition: iron-formation and associated schist Enumerated_Domain: Enumerated_Domain_Value: Wvs Enumerated_Domain_Value_Definition: volcanic rocks and derivative volcanogenic graywacke Enumerated_Domain: Enumerated_Domain_Value: X2g Enumerated_Domain_Value_Definition: granitoid rocks (X2) Enumerated_Domain: Enumerated_Domain_Value: X2gb Enumerated_Domain_Value_Definition: gabbro-diorite and troctolite Enumerated_Domain: Enumerated_Domain_Value: X2gg Enumerated_Domain_Value_Definition: gneiss, amphibolite, and assoicated foliated intrusive quartz-diorite, tonalite, and granite Enumerated_Domain: Enumerated_Domain_Value: X2gn Enumerated_Domain_Value_Definition: gneiss Enumerated_Domain: Enumerated_Domain_Value: X2i Enumerated_Domain_Value_Definition: banded iron-formation Enumerated_Domain: Enumerated_Domain_Value: X2s Enumerated_Domain_Value_Definition: epicratonic sedimentary rocks Enumerated_Domain: Enumerated_Domain_Value: X2v Enumerated_Domain_Value_Definition: volcanic rocks Enumerated_Domain: Enumerated_Domain_Value: X2vg Enumerated_Domain_Value_Definition: volcanic and granitoid rocks, undivided Enumerated_Domain: Enumerated_Domain_Value: X2vs Enumerated_Domain_Value_Definition: mafic to felsic volcanic rocks and sedimentary rocks Enumerated_Domain: Enumerated_Domain_Value: X3g Enumerated_Domain_Value_Definition: granite Enumerated_Domain: Enumerated_Domain_Value: X3gb Enumerated_Domain_Value_Definition: metagabbro Enumerated_Domain: Enumerated_Domain_Value: X3gr Enumerated_Domain_Value_Definition: granitoid rocks (X3) Enumerated_Domain: Enumerated_Domain_Value: X3m Enumerated_Domain_Value_Definition: metamorphic rocks, undivided Enumerated_Domain: Enumerated_Domain_Value: X3q Enumerated_Domain_Value_Definition: quartzite Enumerated_Domain: Enumerated_Domain_Value: X3qs Enumerated_Domain_Value_Definition: quartzite and mica schist Enumerated_Domain: Enumerated_Domain_Value: X3r Enumerated_Domain_Value_Definition: rhyolite Enumerated_Domain: Enumerated_Domain_Value: X3rg Enumerated_Domain_Value_Definition: rhyolite and cogenetic epizonal granite Enumerated_Domain: Enumerated_Domain_Value: X3rm Enumerated_Domain_Value_Definition: rhyolite Enumerated_Domain: Enumerated_Domain_Value: XAgs Enumerated_Domain_Value_Definition: gneiss and epicratonic sedimentary rocks Enumerated_Domain: Enumerated_Domain_Value: Y1g Enumerated_Domain_Value_Definition: epizonal granite and granite porphyry Enumerated_Domain: Enumerated_Domain_Value: Y1gm Enumerated_Domain_Value_Definition: magnetite-bearing granite Enumerated_Domain: Enumerated_Domain_Value: Y1gr Enumerated_Domain_Value_Definition: epizonal granite rocks Enumerated_Domain: Enumerated_Domain_Value: Y1v Enumerated_Domain_Value_Definition: rhyolite and minor trachyte, basalt flows, and tuff Enumerated_Domain: Enumerated_Domain_Value: Y1vg Enumerated_Domain_Value_Definition: rhyolite and granite, undivided Enumerated_Domain: Enumerated_Domain_Value: Y2g Enumerated_Domain_Value_Definition: epizonal micrographic granite porphyry and granite Enumerated_Domain: Enumerated_Domain_Value: Y2gm Enumerated_Domain_Value_Definition: magnetite-bearing granite Enumerated_Domain: Enumerated_Domain_Value: Y2gr Enumerated_Domain_Value_Definition: central Oklahoma granite group Enumerated_Domain: Enumerated_Domain_Value: Y2mg Enumerated_Domain_Value_Definition: mesozonal granite Enumerated_Domain: Enumerated_Domain_Value: Y2mv Enumerated_Domain_Value_Definition: metarhyolite Enumerated_Domain: Enumerated_Domain_Value: Y2o Enumerated_Domain_Value_Definition: osage microgranite Enumerated_Domain: Enumerated_Domain_Value: Y2v Enumerated_Domain_Value_Definition: rhyolite, dacite, and andesite flows and tuff Enumerated_Domain: Enumerated_Domain_Value: Y2vg Enumerated_Domain_Value_Definition: rhyolite, dacite, and epizonal granite, undivided Enumerated_Domain: Enumerated_Domain_Value: Y3gb Enumerated_Domain_Value_Definition: layered intrusive complex Enumerated_Domain: Enumerated_Domain_Value: Y3i Enumerated_Domain_Value_Definition: relatively nonmagnetic intrusive rocks associated with Y3gb unit Enumerated_Domain: Enumerated_Domain_Value: Y3s Enumerated_Domain_Value_Definition: red to buff feldspathic to quartzose sandstone, siltstone, and mudstone Enumerated_Domain: Enumerated_Domain_Value: Y3so Enumerated_Domain_Value_Definition: red lithic sandstone, siltstone, and mudstone Enumerated_Domain: Enumerated_Domain_Value: Y3v Enumerated_Domain_Value_Definition: basalt-rhyolite and associated volcanic and sedimentary rocks Enumerated_Domain: Enumerated_Domain_Value: Ygm Enumerated_Domain_Value_Definition: magnetite-bearing granite Enumerated_Domain: Enumerated_Domain_Value: Ys Enumerated_Domain_Value_Definition: clastic sedimentary rocks Enumerated_Domain: Enumerated_Domain_Value: YXg Enumerated_Domain_Value_Definition: granite and granodiorite Enumerated_Domain: Enumerated_Domain_Value: YXgb Enumerated_Domain_Value_Definition: gabbro Enumerated_Domain: Enumerated_Domain_Value: YXgm Enumerated_Domain_Value_Definition: magnetite-bearing granitoid rocks Enumerated_Domain: Enumerated_Domain_Value: YXgr Enumerated_Domain_Value_Definition: mesozonal granitoid rocks of Early Proterozoic age and epizonal granite Attribute: Attribute_Label: UNIT_NAME Attribute_Definition: name of the geologic units Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: AGE1 Attribute_Definition: geologic eon of rock unit Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: AGE2 Attribute_Definition: geologic era of geologic units Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: TERRANE Attribute_Definition: the geologic terrane that has been assigned to certain rock units Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: RAD_AGE Attribute_Definition: radiometric age or age range Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: RK_CLASS1 Attribute_Definition: general lithologic classification for the most predominant rock type Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: RK_SUBCL1 Attribute_Definition: lithologic subclass for the most predominant rock type Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: LITH1 Attribute_Definition: specific lithologic name for the most predominant rock type Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: RK_CLASS2 Attribute_Definition: general lithologic classification for the second most predominant rock type (if applicable) Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: RK_SUBCL2 Attribute_Definition: lithologic subclass for the second most predominant rock type (if applicable) Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: LITH2 Attribute_Definition: specific lithology for the third most abundant rock type (if applicable) Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: RK_CLASS3 Attribute_Definition: general lithologic classification for the third most predominant rock type (if applicable) Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: RK_SUBCL3 Attribute_Definition: lithologic subclass for the third most predominant rock type (if applicable) Attribute_Definition_Source: midcont paper map Attribute: Attribute_Label: LITH3 Attribute_Definition: specific lithologic name for the third most predominant rock type (if applicable) Attribute_Definition_Source: midcont paper map Entity_Type: Entity_Type_Label: faults.aat Entity_Type_Definition: Arc attribute table for the fault coverage. The attributes identify the name of faults. Entity_Type_Definition_Source: midcont paper map Attribute: Attribute_Label: ID Attribute_Definition: identifies the lines in the coverage Attribute_Definition_Source: midcont paper map Attribute_Domain_Values: Attribute: Attribute_Label: NAME Attribute_Definition: identifies the name of the faults Attribute_Definition_Source: midcont paper map Attribute_Domain_Values: Entity_Type: Entity_Type_Label: structure.aat Entity_Type_Definition: Arc attribute table for the structure coverage. Entity_Type_Definition_Source: midcont paper map Attribute: Attribute_Label: CONTOUR Attribute_Definition: Structure contour value assigned to the arcs. Contour interval is 200 feet; 500 feet in northwestern Illinois; 1,000 feet in Mississippi embayment and Anadarko basin. In Wisconsin, contours not shown in outcrop area; in Missouri, contours not shown above sea level in the St. Francois Mountains. Negative values indicate below sea level. Attribute_Definition_Source: midcont paper map Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -200 Range_Domain_Maximum: 16 Entity_Type: Entity_Type_Label: drill_holes.pat Entity_Type_Definition: point attribute table for well data Entity_Type_Definition_Source: midcont paper map Attribute: Attribute_Label: BASEMENT Attribute_Definition: tells whether well reached bedrock or not Attribute_Definition_Source: midcont paper map Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: yes Enumerated_Domain_Value_Definition: indicates that the well reached bedrock Enumerated_Domain: Enumerated_Domain_Value: no Enumerated_Domain_Value_Definition: indicates that the well did not reach bedrock Enumerated_Domain: Enumerated_Domain_Value: anomalous Enumerated_Domain_Value_Definition: represents an anomalous structure Overview_Description: Entity_and_Attribute_Overview: The four coverages called geology, faults, structure and drill holes and the data were derived from the midcont paper map. Entity_and_Attribute_Detail_Citation: >GEOLOGY.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 GEOLOGY# 4 5 B - > 21 GEOLOGY-ID 4 5 B - > 25 ID 4 5 B - > 29 MAP_SYMBOL 11 11 C - > 40 UNIT_NAME 95 95 C - > 135 AGE1 30 30 C - > 165 AGE2 36 36 C - > 201 TERRANE 27 27 C - > 228 RAD_AGE 11 11 C - > 239 RK_CLASS1 15 15 C - > 254 RK_SUBCL1 21 21 C - > 275 LITH1 33 33 C - > 308 RK_CLASS2 13 13 C - > 321 RK_SUBCL2 21 21 C - > 342 LITH2 32 32 C - > 374 RK_CLASS3 12 12 C - > 386 RK_SUBCL3 17 17 C - > 403 LITH3 15 15 C - >FAULTS.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 4 12 F 3 > 21 FAULTS# 4 5 B - > 25 FAULTS-ID 4 5 B - > 29 ID 4 5 B - > 33 NAME 35 35 C - >STRUCTURE.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 STRUCTURE# 4 5 B - > 29 STRUCTURE-ID 4 5 B > 33 CONTOUR 4 8 N 0 >DRILL_HOLES.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 4 12 F 3 > 5 PERIMETER 4 12 F 3 > 9 DRILL_HOLES# 4 5 B - > 13 DRILL_HOLES-ID 4 5 B - > 17 BASEMENT 10 10 C - Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: William F. Cannon Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing Address: USGS National Center, 12201 Sunrise Valley Drive, MS 954 City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: United States of America Contact_Voice_Telephone: (703) 648-6345 Contact_Facsimile_Telephone: (703) 648-6252 Contact_Electronic_Mail_Address: wcannon@usgs.gov Distribution_Liability: The US Geological Survey provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in this geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on USGS computers, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by the USGS. Standard_Order_Process: Non-digital_Form: Digital_Form: Fees: Metadata_Reference_Information: Metadata_Date: 20001211 Metadata_Review_Date: unknown Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Connie L. Dicken Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing Address: USGS National Center, 12201 Sunrise Valley Drive, MS 954 City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: United States of America Contact_Voice_Telephone: (703) 648-6482 Contact_Facsimile_Telephone: (703) 648-6252 Contact_Electronic_Mail_Address: cdicken@usgs.gov Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Shana G. Pimley Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey National Center, 12201 Sunrise Valley Drive, MS 954 City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: United States of America Contact_Voice_Telephone: 703-648-6399 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: spimley@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: none Metadata_Use_Constraints: none