Identification_Information: Citation: Citation_Information: Originator: Suzanne W. Nicholson Originator: Connie L. Dicken Originator: Michael P. Foose Originator: Julia Mueller Publication_Date: 2004 Title: The Upper Midwest States: Minnesota, Wisconsin, Michigan, Illinois and Indiana - The State of Illinois Edition: version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2004-1355 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2004/1355/ Larger_Work_Citation: Citation_Information: Originator: Suzanne W. Nicholson Originator: Connie L. Dicken Originator: Michael P. Foose Originator: Julia A.L. Mueller Publication_Date: 2004 Title: Integrated geologic map databases for the United States: The Upper Midwest States: Minnesota, Wisconsin, Michigan, Illinois and Indiana Edition: version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2004-1355 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2004/1355/ Description: Abstract: These metadata are specifically for the State of Illinois, one state in the national compilation of state geologic map databases. The digital geologic map data was prepared by Illinois Natural Resources Geospatial Data Clearinghouse. Subsequent editing of the spatial data by the USGS was limited to fitting a standardized state boundary to the data, standardizing the arc coding, reprojecting the data, and minor edits of arc or polygon attributes to conform with the paper map. This open-file report is one of several that present the preliminary results of the USGS Mineral Resources Program activity to compile a national-scale geologic map database to support national and regional level projects, including mineral resource and geoenvironmental assessments. The only comprehensive sources of regional- and national-scale geologic maps are state geologic maps with scales ranging from 1:100,000 to 1:1,000,000. Digital versions of these state maps form the core of what is presented here. Because no adequate geologic map exists for the state of Alaska, it is being compiled in regional blocks that also form part of this national database. It is expected that this series will completed by approximately the end of 2007. These maps and databases are being released in blocks of states or, in the case of Alaska, as compiled blocks of 1:250,000-scale quadrangles as chapters in this series. For Alaska, formal maps as well as databases are being published here, whereas for the conterminous U.S. only state databases and preview graphics are presented, because published maps for most states already exist. For Alaska these regional compilations will form the base for compiling a new geologic map of the state. As documented in CONUSdocumentationMW.pdf, standards for the conterminous U.S. are somewhat different than those for Alaska and Hawaii. Purpose: A primary goal of this work is to develop geologic map datasets with standardized structure and attribution. The database design and standards are documented in CONUSdocumentationMW.pdf of this series. The intent is that contiguous databases can be merged seamlessly and without any additional effort. In addition to a common database structure, the conterminous U.S. state databases (the contiguous 48 states) have been fitted to a set of standard state boundaries so that, when states are merged, they match without slivers or overlap. No attempt has been made to reconcile differences in mapping across state boundaries. Supplemental_Information: This database consists of five major Arc/Info GIS datasets for each state; - one: geologic map with formations, - two: faults (where present), - three: dikes (where present), - four: miscellaneous line features (where present), - five: miscellaneous point features (where present). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -91.86258638 East_Bounding_Coordinate: -86.79863184 North_Bounding_Coordinate: 42.86272148 South_Bounding_Coordinate: 36.83233566 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: geology Place: Place_Keyword_Thesaurus: none Place_Keyword: USA Place_Keyword: Illinois Theme: Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented Theme_Keyword: 3100 - Vector Theme_Keyword: 3110 - ESRI Theme_Keyword: 3112 - export Theme_Keyword: 1100 - Geology Theme_Keyword: 1101 - General Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0 Place_Keyword: US17 = Illinois Access_Constraints: none Use_Constraints: This database is not meant to be used or displayed at any scale other than 1:500,000. Any hardcopies utilizing these data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the U.S. Geological Survey. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Suzanne W. Nicholson Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 12201 Sunrise Valley Dr. MS954 City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6344 Contact_Electronic_Mail_Address: swnich@usgs.gov Data_Set_Credit: State Geologic Map Compilation (SGMC) activity of the National Surveys and Analysis projects of the US Geological Survey Mineral Resources Program. Native_Data_Set_Environment: ARC/INFO version 8.3 ArcView 3.2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The values of the attributes ROCKTYPE1 and ROCKTYPE2 were assigned based on the information in the legends of the source maps (most of which are paper). The definitions of these values are described in the draft document Geologic Map Classification version 6.1 (Johnson and others); available at the following website: http://geology.usgs.gov/dm Logical_Consistency_Report: All internal polygons were checked for closure with vendor software and on hard copy plots. Overshoots and undershoots have been deleted or corrected as appropriate. Completeness_Report: Bodies of water are classified as water, and the geologic units underlying them are not included in this coverage. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Accuracy of Illinois state boundary and those arcs intersecting it: The accuracy of the state boundary arcs is based on the 1:100000 scale original data used to produce this boundary. (Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationMW.pdf)) Those internal arcs intersecting the state boundary were extended or shortened as needed to complete polygons, possibly creating a small amount of error. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1996 Title: Bedrock Geology of Illinois Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: bedgeo Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Source_Scale_Denominator: 500,000 Type_of_Source_Media: digital map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: IL002 Source_Contribution: Provided linework for geology coverage. Source_Information: Source_Citation: Citation_Information: Originator: Willman, H.B Originator: Frye, J.C. Originator: Simon, J.A. Originator: Clegg, K.E. Originator: Swann, D.H. Originator: Atherton, E. Originator: Collinson, C. Originator: Lineback, J. Originator: Buschbach, T.C. Publication_Date: 1967 Title: Geologic Map of Illinois Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS map Issue_Identification: Geologic Map of Illinois Publication_Information: Publication_Place: Capitol Heights, MD Publisher: Williams and Heintz Map Corp. Source_Scale_Denominator: 500,000 Type_of_Source_Media: mylar map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1967 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: IL001 Source_Contribution: provided unit descriptions Source_Information: Source_Citation: Citation_Information: Originator: Bruce R. Johnson Originator: Beth Leveritch Publication_Date: unpublished material Title: 1:100,000 Scale State Boundaries of the Conterminous United States Geospatial_Data_Presentation_Form: vector digital data Source_Scale_Denominator: 100,000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 199808 Source_Currentness_Reference: unknown Source_Citation_Abbreviation: US001 Source_Contribution: Provided linework for state boundaries Source_Information: Source_Citation: Citation_Information: Originator: Bruce R. Johnson Publication_Date: unpublished material Title: Geologic Map Unit Classification, ver. 6.1 Geospatial_Data_Presentation_Form: unknown Source_Scale_Denominator: none Type_of_Source_Media: online; http://geology.usgs.gov/dm Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: unpublished Source_Currentness_Reference: unknown Source_Citation_Abbreviation: Johnson Lith Class 6.1 Source_Contribution: Classification scheme used for lithology. Process_Step: Process_Description: The purpose of this standardization is to allow all SGMC covers to be seamlessly joined without any additional effort to form regional or national level digital maps. Note that for Alaska, the state is being compiled as blocks of 1:250k quadrangles that will ultimately be used to compile a new state map. Douglas Stoeser (USGS) and Ric Wilson (USGS) are co-coordinators for the overall SGMC effort, with Stoeser coordinating work on the mainland states and Wilson coordinating work for Alaska and Hawaii. Process_Date: 2003-2004 Process_Step: Process_Description: Downloaded the digital files from Illinois Natural Resources Geospatial Data Clearinghouse website at http://www.isgs.uiuc.edu/nsdihome/ Imported bedgeo.e00 into a coverage and reprojected the data into the following: projection: Lambert Conformal Conic units: meters datum: NAD27 standard parallel 1: 33 0 0.000 standard parallel 2: 45 0 0.000 central meridian: -100 0 0.000 reference latitude: 0 0 0.000 false easting: 0.00000 false northing: 0.00000 No extraneous attributes were in the table, therefore no attributes were deleted. (Note: Attributes associated with the generation of the coverages were not deleted. PAT - shape, area, perimeter, coverage#, and coverage-id AAT - shape, fnode#, tnode#, lnode#, rnode#, length, coverage#, and coverage-id) The only attribute in the table is bed-geo. The values from bed-geo were calculated into a new field called orig_label. Process_Date: 20031208 Process_Step: Process_Description: The relevant state outline (arcs) was removed from the coverage and replaced with the arcs from the 1:100,000 Scale State Boundaries of the Conterminous United States. This allows for a seamless fit of each state to a standard state boundary base. Process_Date: 20040315 Process_Step: Process_Description: In order to prepare a uniform .pat file, the following attributes were exported from our standardized database for Illinois as a .dbf: orig_label, map_symbol2, unit_link, reference_id, unit_age, rocktype1, and rocktype2. orig_label reflects the original map symbol used on the source map map_symbol2 reflects map-symbol1 with the addition of a province number unit_link is an auto generated field based on map-symbol2 and the state abbreviation (e.g. IL001) that produces a unique identifier for each map unit reference_id was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework and other references used to describe the age or lithologies of the unit. unit_age was populated with general age assignment rocktype1 records dominant lithology (must be >50% of unit), using standardized data dictionary rocktype2 records second most dominant lithology, using standardized data dictionary orig_label has the following field names from the source map: bed-geo in Illinois map_code in Indiana symbol in Michigan symbol in Wisconsin map_label in Minnesota The attributes were then converted using the following structure: item name: orig_label width: 12 output: 12 type: c item name: sgmc_label width: 16 output: 16 type: c item name: unit_link width: 18 output: 18 type: c item name: source width: 6 output: 8 type: c item name: unit_age width: 60 output: 60 type: c item name: rocktype1 width: 40 output: 40 type: c item name: rocktype2 width: 40 output: 40 type: c Process_Date: 20040316 Process_Step: Process_Description: Once the .dbf was in the correct format with standardized column widths and data structure, it was converted into a lookup table (.lut) in Arc/Info. Then a joinitem was performed to join the look-up table to the polygon attribute table (.pat). orig_label was used as the merge item. Process_Date: 20040316 Process_Step: Process_Description: Next, in preparing the uniform arc attribute table (.aat), the following items were added to the table: item name: arc-code width: 3 output: 3 type: i item name: arc-para1 width: 3 output: 3 type: i item name: arc-para2 width: 3 output: 3 type: i item name: source width: 6 output: 8 type: c Process_Date: 20040325 Process_Step: Process_Description: Arc-code was populated using the paper map source to tag the lines using the AAT line type data dictionary (see CONUSdocumentationMW.pdf). Arc-para1 was populated when additional information was available such as identifying the upthrown side of a fault or direction of thrusting on a fault. (see CONUSdocumentationMW.pdf) Arc-para2 is a scratch field that is used mostly in Alaska. Source was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework. Process_Date: 20040325 Process_Step: Process_Description: Once the .aat and the .pat were populated with the correct attributes, the coverage was exported as an .e00 file (ILgeol_lcc.e00). Then it was unprojected into geographic coordinates and exported again (ILgeol_dd.e00). Process_Date: 20040325 Process_Step: Process_Description: The faults were extracted to generate a separate fault file. PUT was the command used to copy the line features from the geology line coverage into a new fault line coverage. The data were exported as an .e00 file (ILfaults_lcc.e00) and then unprojected into geographic coordinates and exported again (ILfaults_dd.e00). Process_Date: 20040326 Process_Step: Process_Description: Finally, the geology lines, geology polygons and fault line coverages were converted into shapefiles; in both geographic coordinates and in Lambert Conformal Conic projection. Process_Date: 20040326 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 33 Standard_Parallel: 45 Longitude_of_Central_Meridian: -100.0 Latitude_of_Projection_Origin: 0 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.01 Ordinate_Resolution: 0.01 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: il_geol.pat Entity_Type_Definition: Polygon attribute table for the Illinois geologic coverage. Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: orig_label Attribute_Definition: unmodified map unit symbol from source cover. type: character width: 12 output width: 12 Attribute_Definition_Source: IL001 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1200 Enumerated_Domain_Value_Definition: T = Tertiary Enumerated_Domain: Enumerated_Domain_Value: 1360 Enumerated_Domain_Value_Definition: K = Cretaceous Enumerated_Domain: Enumerated_Domain_Value: 1550 Enumerated_Domain_Value_Definition: PAma = Mattoon Formation Enumerated_Domain: Enumerated_Domain_Value: 1880 Enumerated_Domain_Value_Definition: PAb = Bond Formation Enumerated_Domain: Enumerated_Domain_Value: 2120 Enumerated_Domain_Value_Definition: PAm = Modesto Formation Enumerated_Domain: Enumerated_Domain_Value: 2480 Enumerated_Domain_Value_Definition: PAc = Carbondale Formation Enumerated_Domain: Enumerated_Domain_Value: 3030 Enumerated_Domain_Value_Definition: PAs = Spoon Formation Enumerated_Domain: Enumerated_Domain_Value: 3540 Enumerated_Domain_Value_Definition: PAa = Abbott Formation Enumerated_Domain: Enumerated_Domain_Value: 3820 Enumerated_Domain_Value_Definition: PAcv = Caseyville Formation Enumerated_Domain: Enumerated_Domain_Value: 4025 Enumerated_Domain_Value_Definition: Mcu = Upper Chesterian (Grove Church - Tar Springs) Enumerated_Domain: Enumerated_Domain_Value: 4265 Enumerated_Domain_Value_Definition: Mcl = Lower Chesterian (Glen Dean - Renault) Enumerated_Domain: Enumerated_Domain_Value: 5005 Enumerated_Domain_Value_Definition: Mvu = Upper Valmeyeran (Aux Vases, Ste. Genevieve, St. Louis) Enumerated_Domain: Enumerated_Domain_Value: 5175 Enumerated_Domain_Value_Definition: Mvm = Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) Enumerated_Domain: Enumerated_Domain_Value: 5255 Enumerated_Domain_Value_Definition: Mvl = Lower Valmeyeran (Keokuk-Sedalia) Enumerated_Domain: Enumerated_Domain_Value: 5420 Enumerated_Domain_Value_Definition: Mk = Kinderhookian Enumerated_Domain: Enumerated_Domain_Value: 5810 Enumerated_Domain_Value_Definition: Du = Upper Devonian Enumerated_Domain: Enumerated_Domain_Value: 5880 Enumerated_Domain_Value_Definition: Dm = Middle Devonian Enumerated_Domain: Enumerated_Domain_Value: 6170 Enumerated_Domain_Value_Definition: Dl = Lower Devonian Enumerated_Domain: Enumerated_Domain_Value: 6700 Enumerated_Domain_Value_Definition: S = Silurian Enumerated_Domain: Enumerated_Domain_Value: 7390 Enumerated_Domain_Value_Definition: Om = Maquoketa Enumerated_Domain: Enumerated_Domain_Value: 7550 Enumerated_Domain_Value_Definition: Og = Galena-Platteville Enumerated_Domain: Enumerated_Domain_Value: 8160 Enumerated_Domain_Value_Definition: Oa = Ancell Enumerated_Domain: Enumerated_Domain_Value: 8420 Enumerated_Domain_Value_Definition: Op = Prairie du Chien Enumerated_Domain: Enumerated_Domain_Value: 8550 Enumerated_Domain_Value_Definition: CA = Cambrian Enumerated_Domain: Enumerated_Domain_Value: water Enumerated_Domain_Value_Definition: water Attribute: Attribute_Label: sgmc_label Attribute_Definition: orig_label + ;n where n= province number (n=0 if no province number) type: character width: 16 output width: 16 Attribute_Definition_Source: Doug Stoeser Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: T;0 Enumerated_Domain_Value_Definition: T = Tertiary Enumerated_Domain: Enumerated_Domain_Value: K;0 Enumerated_Domain_Value_Definition: K = Cretaceous Enumerated_Domain: Enumerated_Domain_Value: PAma;0 Enumerated_Domain_Value_Definition: PAma = Mattoon Formation Enumerated_Domain: Enumerated_Domain_Value: PAb;0 Enumerated_Domain_Value_Definition: PAb = Bond Formation Enumerated_Domain: Enumerated_Domain_Value: PAm;0 Enumerated_Domain_Value_Definition: PAm = Modesto Formation Enumerated_Domain: Enumerated_Domain_Value: PAc;0 Enumerated_Domain_Value_Definition: PAc = Carbondale Formation Enumerated_Domain: Enumerated_Domain_Value: PAs;0 Enumerated_Domain_Value_Definition: PAs = Spoon Formation Enumerated_Domain: Enumerated_Domain_Value: PAa;0 Enumerated_Domain_Value_Definition: PAa = Abbott Formation Enumerated_Domain: Enumerated_Domain_Value: PAcv;0 Enumerated_Domain_Value_Definition: PAcv = Caseyville Formation Enumerated_Domain: Enumerated_Domain_Value: Mcu;0 Enumerated_Domain_Value_Definition: Mcu = Upper Chesterian (Grove Church - Tar Springs) Enumerated_Domain: Enumerated_Domain_Value: Mcl;0 Enumerated_Domain_Value_Definition: Mcl = Lower Chesterian (Glen Dean - Renault) Enumerated_Domain: Enumerated_Domain_Value: Mvu;0 Enumerated_Domain_Value_Definition: Mvu = Upper Valmeyeran (Aux Vases, Ste. Genevieve, St. Louis) Enumerated_Domain: Enumerated_Domain_Value: Mvm;0 Enumerated_Domain_Value_Definition: Mvm = Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) Enumerated_Domain: Enumerated_Domain_Value: Mvl;0 Enumerated_Domain_Value_Definition: Mvl = Lower Valmeyeran (Keokuk-Sedalia) Enumerated_Domain: Enumerated_Domain_Value: Mk;0 Enumerated_Domain_Value_Definition: Mk = Kinderhookian Enumerated_Domain: Enumerated_Domain_Value: Du;0 Enumerated_Domain_Value_Definition: Du = Upper Devonian Enumerated_Domain: Enumerated_Domain_Value: Dm;0 Enumerated_Domain_Value_Definition: Dm = Middle Devonian Enumerated_Domain: Enumerated_Domain_Value: Dl;0 Enumerated_Domain_Value_Definition: Dl = Lower Devonian Enumerated_Domain: Enumerated_Domain_Value: S;0 Enumerated_Domain_Value_Definition: S = Silurian Enumerated_Domain: Enumerated_Domain_Value: Om;0 Enumerated_Domain_Value_Definition: Om = Maquoketa Enumerated_Domain: Enumerated_Domain_Value: Og;0 Enumerated_Domain_Value_Definition: Og = Galena-Platteville Enumerated_Domain: Enumerated_Domain_Value: Oa;0 Enumerated_Domain_Value_Definition: Oa = Ancell Enumerated_Domain: Enumerated_Domain_Value: Op;0 Enumerated_Domain_Value_Definition: Op = Prairie du Chien Enumerated_Domain: Enumerated_Domain_Value: CA;0 Enumerated_Domain_Value_Definition: CA = Cambrian Enumerated_Domain: Enumerated_Domain_Value: water;0 Enumerated_Domain_Value_Definition: water Attribute: Attribute_Label: unit_link Attribute_Definition: composite map label = ST + sgmc_label This creates a unique identifier for every unit in the CONUS (continental United States) covers. type: character width: 18 output width: 18 Attribute_Definition_Source: Doug Stoeser Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ILT;0 Enumerated_Domain_Value_Definition: T = Tertiary Enumerated_Domain: Enumerated_Domain_Value: ILK;0 Enumerated_Domain_Value_Definition: K = Cretaceous Enumerated_Domain: Enumerated_Domain_Value: ILPAma;0 Enumerated_Domain_Value_Definition: PAma = Mattoon Formation Enumerated_Domain: Enumerated_Domain_Value: ILPAb;0 Enumerated_Domain_Value_Definition: PAb = Bond Formation Enumerated_Domain: Enumerated_Domain_Value: ILPAm;0 Enumerated_Domain_Value_Definition: PAm = Modesto Formation Enumerated_Domain: Enumerated_Domain_Value: ILPAc;0 Enumerated_Domain_Value_Definition: PAc = Carbondale Formation Enumerated_Domain: Enumerated_Domain_Value: ILPAs;0 Enumerated_Domain_Value_Definition: PAs = Spoon Formation Enumerated_Domain: Enumerated_Domain_Value: ILPAa;0 Enumerated_Domain_Value_Definition: PAa = Abbott Formation Enumerated_Domain: Enumerated_Domain_Value: ILPAcv;0 Enumerated_Domain_Value_Definition: PAcv = Caseyville Formation Enumerated_Domain: Enumerated_Domain_Value: ILMcu;0 Enumerated_Domain_Value_Definition: Mcu = Upper Chesterian (Grove Church - Tar Springs) Enumerated_Domain: Enumerated_Domain_Value: ILMcl;0 Enumerated_Domain_Value_Definition: Mcl = Lower Chesterian (Glen Dean - Renault) Enumerated_Domain: Enumerated_Domain_Value: ILMvu;0 Enumerated_Domain_Value_Definition: Mvu = Upper Valmeyeran (Aux Vases, Ste. Genevieve, St. Louis) Enumerated_Domain: Enumerated_Domain_Value: ILMvm;0 Enumerated_Domain_Value_Definition: Mvm = Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) Enumerated_Domain: Enumerated_Domain_Value: ILMvl;0 Enumerated_Domain_Value_Definition: Mvl = Lower Valmeyeran (Keokuk-Sedalia) Enumerated_Domain: Enumerated_Domain_Value: ILMk;0 Enumerated_Domain_Value_Definition: Mk = Kinderhookian Enumerated_Domain: Enumerated_Domain_Value: ILDu;0 Enumerated_Domain_Value_Definition: Du = Upper Devonian Enumerated_Domain: Enumerated_Domain_Value: ILDm;0 Enumerated_Domain_Value_Definition: Dm = Middle Devonian Enumerated_Domain: Enumerated_Domain_Value: ILDl;0 Enumerated_Domain_Value_Definition: Dl = Lower Devonian Enumerated_Domain: Enumerated_Domain_Value: ILS;0 Enumerated_Domain_Value_Definition: S = Silurian Enumerated_Domain: Enumerated_Domain_Value: ILOm;0 Enumerated_Domain_Value_Definition: Om = Maquoketa Enumerated_Domain: Enumerated_Domain_Value: ILOg;0 Enumerated_Domain_Value_Definition: Og = Galena-Platteville Enumerated_Domain: Enumerated_Domain_Value: ILOa;0 Enumerated_Domain_Value_Definition: Oa = Ancell Enumerated_Domain: Enumerated_Domain_Value: ILOp;0 Enumerated_Domain_Value_Definition: Op = Prairie du Chien Enumerated_Domain: Enumerated_Domain_Value: ILCA;0 Enumerated_Domain_Value_Definition: CA = Cambrian Enumerated_Domain: Enumerated_Domain_Value: ILwater;0 Enumerated_Domain_Value_Definition: water Attribute: Attribute_Label: source Attribute_Definition: An alphanumeric code (e.g. US001) that designates the source material used. type: character width: 6 output width: 8 Attribute_Definition_Source: Doug Stoeser Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: IL001 Enumerated_Domain_Value_Definition: Willman, H.B., and others, (compilers), 1967, Geologic Map of Illinois: Illinois State Geological Survey, scale= 1:500,000, paper. Attribute: Attribute_Label: unit_age Attribute_Definition: geologic age from the source map used. type: character width: 60 output width: 60 Attribute_Definition_Source: Doug Stoeser Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Cambrian Enumerated_Domain_Value: Cretaceous Enumerated_Domain_Value: Devonian Enumerated_Domain_Value: Mississippian Enumerated_Domain_Value: Ordovician Enumerated_Domain_Value: Pennsylvanian Enumerated_Domain_Value: Silurian Enumerated_Domain_Value: Tertiary Attribute: Attribute_Label: rocktype1 Attribute_Definition: The predominant lithology found in the formation. type: character width: 40 output width: 40 Attribute_Definition_Source: Johnson Lith Class 6.1 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: black shale Enumerated_Domain_Value: dolostone (dolomite) Enumerated_Domain_Value: limestone Enumerated_Domain_Value: sand Enumerated_Domain_Value: sandstone Enumerated_Domain_Value: shale Enumerated_Domain_Value: water Attribute: Attribute_Label: rocktype2 Attribute_Definition: The second most predominant lithology in the formation. type: character width: 40 output width: 40 Attribute_Definition_Source: Johnson Lith Class 6.1 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: chert Enumerated_Domain_Value: clay or mud Enumerated_Domain_Value: dolostone (dolomite) Enumerated_Domain_Value: limestone Enumerated_Domain_Value: sandstone Enumerated_Domain_Value: shale Enumerated_Domain_Value: siltstone Detailed_Description: Entity_Type: Entity_Type_Label: il_geol.aat Entity_Type_Definition: Arc attribute table for Illinois geologic coverage. Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: arc-code Attribute_Definition: Unique identifier for the line feature type: integer width: 3 output width: 3 Attribute_Definition_Source: AAT data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: contact, location certain Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 7 Enumerated_Domain_Value_Definition: shoreline or riverbank Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 30 Enumerated_Domain_Value_Definition: fault, sense of displacement unknown or undefined, location certain Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 124 Enumerated_Domain_Value_Definition: state boundary Attribute: Attribute_Label: arc-para1 Attribute_Definition: Used for "decorated" lines where additional information is needed. type: integer width: 3 output width: 3 Attribute_Definition_Source: AAT data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: no additional information Attribute: Attribute_Label: arc-para2 Attribute_Definition: "Scratch" field used mostly in Alaska. type: integer width: 3 output width: 3 Attribute_Definition_Source: AAT data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: no additional information Attribute: Attribute_Label: source Attribute_Definition: An alphanumeric code (e.g. US001) that designates the source material used. type: character width: 6 output width: 8 Attribute_Definition_Source: Doug Stoeser Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: IL001 Enumerated_Domain_Value_Definition: Willman, H.B., and others, (compilers), 1967, Geologic Map of Illinois: Illinois State Geological Survey, scale= 1:500,000, paper. Enumerated_Domain: Enumerated_Domain_Value: US001 Enumerated_Domain_Value_Definition: Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationMW.pdf) Overview_Description: Entity_and_Attribute_Overview: Coding for polygon attributes: NAME: FEATURE: orig_label unmodified map unit symbols from source cover sgmc_label orig_label modified for standard geologic age symbols and an integer code added for province unit_link sgmc_label and a state code identifier source reference to source of data unit_age geologic age rocktype1 dominant lithology rocktype2 second most dominant lithology Coding for arc attributes: NAME: FEATURE: arc-code unique integer identifier arc-para1 used where additional information is needed arc-para2 scratch field source reference to source of data Coding for point attributes: NAME: FEATURE: point_feature name of feature on map source reference to source of data Coding for dikes (special arcs) attributes: NAME: FEATURE: orig_label unmodified map unit symbols from source cover sgmc_label orig_label modified for standard geologic age symbols and an integer code added for province arc-code unique integer identifier dike_lith general lithology dike_age geologic age source reference to source of data Entity_and_Attribute_Detail_Citation: ESRI Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Information Services Reston-ESIC Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey 507 National Center City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS or 1-703-648-5953 Contact_Electronic_Mail_Address: http://www.usgs.gov/contact/ Distribution_Liability: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the USGS. Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:500,000. Resource_Description: USGS OFR 2004-1355 Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARC/INFO export Format_Version_Number: 8.3 Format_Information_Content: Geologic units and structural features File_Decompression_Technique: gzip and tar Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2004/1355 Fees: none Metadata_Reference_Information: Metadata_Date: 20040518 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Connie L. Dicken Contact_Address: Address_Type: mailing and physical address Address: 12201 Sunrise Valley Dr. MS954 City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6482 Contact_Electronic_Mail_Address: cdicken@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") Metadata_Standard_Version: FGDC-STD-001-1998