Identification_Information: Citation: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1996 Title: Coal Resources of Illinois: Colchester (No.2), Dekoven, Jamestown, Belle Rive, Bristol Hill, Calhoun, Friendsville, Loudon, Oconee, Opdyke, Shelbyville, and Trowbridge Coals Edition: 2.0 (Prior to 1995 no version numbers had been assigned to this coverage. The previous coverage that partially depicted this data will heretofore be assigned as version 1.0 and this coverage is version 2.0.) Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: coal2-84 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: This is the automated version of the Coal Resources Map (for the same coal seams) by J.D. Treworgy and M.H. Bargh (1984). Online_Linkage: Downloadable Data (Shift-Click to download data file) Online_Linkage: Browse Graphic (GIF) Screen-size image representing the nature of the data. Online_Linkage: Text (.txt) version of this Metadata file. (Shift-Click to download documentation) Online_Linkage: HTML (.html) version of this Metadata file. (Shift-Click to download documentation) Description: Abstract: This is an Arc/Info REGIONS coverage showing coal resources (thickness, depth, and estimated average tonnages) for several coal seams in Illinois. Each coal seam is included as a separate region. The regions are: Colchester, Dekoven, Jamestown, Belle Rive, Bristol Hill, Calhoun, Friendsville, Loudon, Oconee, Opdyke, Shelbyville, and Trowbridge. There is one additional region for areas of no coal. In addition, arcs are attributed to indicate the Pennsylvanian boundary, depth to (top surface) of coals (contours), and 28" and 42" coal isopach lines. This is the automated version of the Coal Resources Map (for the same coal seams) by J.D. Treworgy and M.H. Bargh (1984). This data set has a scale of 1:500,000. Purpose: This data set was created as part of the ISGS GIS database to show distribution, thickness, depth, and tonnages for several regional coal seams. The data are appropriate for regional analysis. Supplemental_Information: none Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Currentness_Reference: publication date of sources Status: Progress: complete Maintenance_and_Update_Frequency: irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -91.5826 East_Bounding_Coordinate: -87.3840 North_Bounding_Coordinate: 42.4956 South_Bounding_Coordinate: 36.9535 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: geology Theme_Keyword: coal Theme_Keyword: coal seams Theme_Keyword: mineral Theme_Keyword: resources Place: Place_Keyword_Thesaurus: none Place_Keyword: Illinois Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: Pennsylvanian Access_Constraints: none Use_Constraints: Reproduction or redistribution of copyrighted digital data sets or products derived therefrom outside of licensee's organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without permission of the appropriate custodial division within DNR. Any hardcopies utilizing DNR 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 DNR data sets, nor to imply that changes they made were approved by DNR. These data are not to be used for commercial profit. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Illinois State Geological Survey Contact_Position: Information Office Contact_Address: Address_Type: mailing and physical address Address: 615 East Peabody Drive City: Champaign State_or_Province: Illinois Postal_Code: 61820 Country: USA Contact_Voice_Telephone: 217-333-4747 Contact_TDD/TTY_Telephone: 217-785-0211 Contact_Facsimile_Telephone: 217-244-0802 Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Data_Set_Credit: > GIS Processing: ISGS Staff > Documentation: D. Nelson and S. Beaverson > Quality Control: ISGS Staff Native_Data_Set_Environment: SunOS UNIX, ARC/INFO version 7.0.4 Cross_Reference: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1996 Title: Coal Resources of Illinois: Davis, Murphysboro, Seelyville, Assumption, Bell, Houchin Creek (formerly Summum (No. 4)), Litchfield, coals near Makanda, Mt. Rorah, New Burnside, Reynoldsburg, Rock Island (No. 1), "Seahorne", Survant (formerly Shawneetown), Wiley, Willis, and Wise Ridge Coals. Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: coalmix-84 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: This is the automated version of the Coal Resources Map (for the same coal seams) by J.D. Treworgy and M.H. Bargh (1984). Online_Linkage: Data Set Documentation Cross_Reference: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1996 Title: Coal Resources of Illinois: Springfield (No.5) Coal Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: coal5-84 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: This is the automated version of the Coal Resources Map (for the same coal seam) by J.D. Treworgy and M.H. Bargh (1984). Online_Linkage: Data Set Documentation Cross_Reference: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1996 Title: Coal Resources of Illinois: Herrin (No. 6) Coal Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: coal6-84 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: This is the automated version of the Coal Resources Map (for the same coal seam) by J.D. Treworgy and M.H. Bargh (1984). Online_Linkage: Data Set Documentation Cross_Reference: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1994 Title: Coal Resources of Illinois: Danville (No. 7) Coal Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: coal7-84 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: This is the automated version of the Coal Resources Map (for the same coal seam) by J.D. Treworgy and M.H. Bargh (1984). Online_Linkage: Data Set Documentation Cross_Reference: Citation_Information: Originator: Coal Section, Illinois State Geological Survey Publication_Date: 19910101 Title: Point Locations of Active and Abandoned Coal Mines in Illinois Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: clminept Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: Data Set Documentation Cross_Reference: Citation_Information: Originator: Stiff, Barbara J. Publication_Date: 1997 Title: Areas Mined for Coal in Illinois - Part 1 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: coalmines_py Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geologic Survey Online_Linkage: Data Set Documentation Cross_Reference: Citation_Information: Originator: Stiff, Barbara J. Publication_Date: 1997 Title: Areas Mined for Coal in Illinois - Part 2 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: coalmines_py2 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geologic Survey Online_Linkage: Data Set Documentation Cross_Reference: Citation_Information: Originator: Illinois Office of Mines and Minerals Publication_Date: 1995 Title: Coal Mine Permits Boundaries in Illinois Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: IDNR GIS Database Issue_Identification: coalprmt Publication_Information: Publication_Place: Springfield, Illinois Publisher: Illinois Department of Natural Resources Online_Linkage: Data Set Documentation Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attributes of this coverage were reviewed in 1995-96 by comparison with the attributes of the source paper map and the lines of the source mylar separate. Source accuracy was not addressed in that review. A variety of visual techniques (region shading, line shading and line thicknesses tied to attribute values) and GIS processing techniques (checking for logical consistency) were used. Attribute values for arcs were verified by generating plots with arcs color-coded by designation. These were visually checked for errors. Region attribute items values were verified in a similar manner. For example, thickness and tonnage were checked by plotting maps with a unique color/symbol pattern for each possible combination. These check-plots were visually inspected for the proper designations, and all other regions attributes were verified in the same way. In cases of incorrect or ambiguous attribute values, the sources of the source paper map were consulted, and corrections made. These reviews were performed in an iterative fashion by two or three individuals. There are no arc or region attribute values outside the appropriate value domains. There are no user-defined polygon attributes. Logical_Consistency_Report: Polygon and chain-node topology is present. The coverage was checked for complete chain-node topology (no dangling arcs, except where appropriate), polygon labels (one per polygon, except for universal polygon), correct regions topology, boundary values appropriate for map projection and map units, and appropriate "fuzzy" tolerances. There are no known arc, polygon or region attribute values outside the appropriate value domains. There are 31 dangling arcs in this coverage. These correspond to 31 dangling arcs on the original mylars and the published map. Most of them are incomplete 150 foot depth contour lines. Completeness_Report: Mine boundaries are current as of 1984 and have not been updated since. Many coal seam boundaries have been generalized using section lines and/or county boundaries because the source data are proprietary. Not all coal seams in Illinois are included. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: This is a generalized depiction of regional ground condition. Horizontal positional accuracy was verified by manual overlay of source and hard-copy plots. Arcs within line-width of source maps are deemed acceptable. For positional accuracy of source maps, contact the ISGS Coal Section. See Completeness Report. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Treworgy, J.D. and M.H. Bargh Publication_Date: 1984 Title: Coal Resources of Illinois: Colchester (No.2), Dekoven and Jamestown, with Belle Rive, Bristol Hill, Calhoun, Friendsville, Loudon, Oconee, Opdyke, Shelbyville, and Trowbridge Coals Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS Map Issue_Identification: same as title Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Source_Scale_Denominator: 500000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: All attribute information Source_Information: Source_Citation: Citation_Information: Originator: Hunter, K. Publication_Date: n/a Title: Original mylar separate for coal seam boundary lines on the map: Coal Resources of Illinois: Colchester (No.2), Dekoven and Jamestown, with Belle Rive, Bristol Hill, Calhoun, Friendsville, Loudon, Oconee, Opdyke, Shelbyville, and Trowbridge Coals Geospatial_Data_Presentation_Form: map Source_Scale_Denominator: 500000 Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Source_Currentness_Reference: approximate printing date Source_Citation_Abbreviation: none Source_Contribution: coal seam boundary lines and 1000 foot depth contours Source_Information: Source_Citation: Citation_Information: Originator: Hunter, K. Publication_Date: n/a Title: Original mylar separate for 150 foot depth contours on the map: Coal Resources of Illinois: Colchester (No.2), Dekoven and Jamestown, with Belle Rive, Bristol Hill, Calhoun, Friendsville, Loudon, Oconee, Opdyke, Shelbyville, and Trowbridge Coals Geospatial_Data_Presentation_Form: map Source_Scale_Denominator: 500000 Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Source_Currentness_Reference: approximate printing date Source_Citation_Abbreviation: none Source_Contribution: coal seam 150 foot depth contours Source_Information: Source_Citation: Citation_Information: Originator: Hunter, K. Publication_Date: n/a Title: Original mylar separate for Pennsylvanian boundary lines on the map: Coal Resources of Illinois: Colchester (No.2), Dekoven and Jamestown, with Belle Rive, Bristol Hill, Calhoun, Friendsville, Loudon, Oconee, Opdyke, Shelbyville, and Trowbridge Coals Geospatial_Data_Presentation_Form: map Source_Scale_Denominator: 500000 Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Source_Currentness_Reference: approximate printing date Source_Citation_Abbreviation: none Source_Contribution: Pennsylvanian boundary lines Source_Information: Source_Citation: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1984 Title: Township Lines of Illinois Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: townships Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: Data Set Documentation Source_Scale_Denominator: 24000 and 62500 Type_of_Source_Media: digital data set Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: townships lines where used as coal seam boundary Source_Information: Source_Citation: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: 1984 Title: Illinois County Boundaries Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: ISGS GIS Database Issue_Identification: counties Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: Data Set Documentation Source_Scale_Denominator: 24000 and 62500 Type_of_Source_Media: digital data set Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: county boundaries where used as coal seam boundary Source_Information: Source_Citation: Citation_Information: Originator: Cady, G.H., and others Publication_Date: 1952 Title: Minable Coal Reserves of Illinois as of 1950 Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: ISGS Bulletin Issue_Identification: 78 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 138 pages, 8 plates, 37 figures, 1 table Plate 7 available separately out of print Source_Scale_Denominator: 500000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1952 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Jacobson, R.J. Publication_Date: 1985 Title: Coal Resources of Grundy, La Salle, and Livingston Counties, Illinois Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: ISGS Circular Issue_Identification: 536 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 58 pages, 6 plates including cross-section, 31 figures, 10 tables Source_Scale_Denominator: 125000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1985 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Roger B. Nance and Treworgy, Colin G. Publication_Date: 1981 Title: Strippable Coal Resources of Illinois. Part 8: Central and Southeastern Counties Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: ISGS Circular Issue_Identification: 515 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 32 pages, 2 plates, 11 figures, 10 tables Source_Scale_Denominator: 1 inch = 2 miles (approx.) Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1981 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Reinertsen, D. L. Publication_Date: 1963 Title: Strippable Coal Reserves of Illinois. Part 4: Adams, Brown, Calhoun, Hancock, McDonough, Pike Schuyler, and the southern parts of Henderson and Warren Counties. Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Circular Issue_Identification: 374 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 32 pages, 1 plate, 7 figures, 5 tables Plate available separately out of print Source_Scale_Denominator: 1 inch = 2 miles (approx.) Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1963 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Searight, T.K. and W.H. Smith Publication_Date: 1969 Title: Strippable Coal Reserves of Illinois. Part 5B: Mercer, Rock Island, Warren , and parts of Henderson and Henry counties Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Circular Issue_Identification: 439 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 22 pages, 2 plates, 3 figures, 1 table Source_Scale_Denominator: 1 inch = 2 1/4 miles (approx.) Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1969 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Smith, W.H. Publication_Date: 1957 Title: Strippable Coal Reserves of Illinois. Part 1: Gallatin, Hardin, Johnson, Pope, Saline, and Williamson Counties Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Circular Issue_Identification: 228 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 39 pages, 2 figures, 2 plates, 5 tables Plate 3 available separately Source_Scale_Denominator: 1 inch = 2 miles (approx.) Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1957 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Smith, W.H. Publication_Date: 1958 Title: Strippable Coal Reserves of Illinois. Part 2: Jackson, Monroe, Perry, Randolph, and St. Clair Counties Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Circular Issue_Identification: 260 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 35 pages, 4 plates, 4 figures, 6 tables Plate 1 available separately out of print Source_Scale_Denominator: 1 inch = 2 miles (approx.) Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1958 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Smith, W. H. Publication_Date: 1961 Title: Strippable Coal Reserves of Illinois. Part 3 Madison, Macoupin, Jersey, Greene, Scott, Morgan, and Cass Counties Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Circular Issue_Identification: 311 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 40 pages, 4 plates, 2 figures, 4 tables Plates 1, 2, and 3 available separately Source_Scale_Denominator: 1 inch = 2 miles (approx.) Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1961 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Smith, W.H. and D.J. Berggren Publication_Date: 1963 Title: Strippable Coal Reserves of Illinois. Part 5A: Fulton, Henry, Knox, Peoria, Stark, Tazewell, and parts of Bureau, Marshall, Mercer, and Warren Counties Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Circular Issue_Identification: 348 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 59 pages, 4 plates, 7 figures, 8 tables Plates 1, 2, and 3 available separately Source_Scale_Denominator: 1 inch = 2 miles (approx.) Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1963 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: not available Source_Information: Source_Citation: Citation_Information: Originator: Treworgy, C.G. and M.H. Bargh Publication_Date: 1982 Title: Deep-Minable Coal Resources of Illinois Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Circular Issue_Identification: 527 Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Other_Citation_Details: 65 pages, 2 plates, 25 figures, 5 tables Source_Scale_Denominator: 1 inch = 24 miles (approx.) 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: none Source_Contribution: not available Process_Step: Process_Description: > Tics: > Tics from three different sources were used. Six tics > that correspond to the registration marks on the > mylar separates were taken from the coal coverage BASE, > which was automated in 1984 by ESRI. Eight tics that > correspond to lat/long intersections were taken from > *path_name_suppressed*/DEMTILES. Four tics from > *path_name_suppressed*/COUNTIES were also used. Process_Date: 1995 Process_Step: Process_Description: > Digitizing: > The coverage was digitized from the mylar separates that were > used in the printing of the published hard copy maps. The > separates were obtained from Colin Treworgy, ISGS Coal Section. > Three separates were used: > 1) black line separate, representing all boundaries of coal bodies, > 2) red line separate, representing the 150 foot depth line, and > 3) Pennsylvanian boundary separate. Separates were digitized at the 1:500,000 scale on a GTCO Super L II digitizing board. Black lines were digitized by M. Greenpool during February, March and April 1995, with a maximum RMS of 0.008. Red lines were digitized by R. Rice during May and July, 1995, with a maximum RMS of 0.005. The Pennsylvanian boundary was digitized into a separate coverage by M. Riggs during June, 1995, with a maximum RMS of 0.005. Inset areas of the map were digitized during October 1995, into a separate coverage by R. Rice, with a maximum RMS of 0.008. Process_Date: 1995 Process_Step: Process_Description: > Processing > 1. There are township and county boundary arcs on the > published map which are not on the mylars. The > corresponding arcs were copied from the COUNTIES > and TOWNSHIPS coverages in the ISGS GIS database > directory *path_name_suppressed*/ILLIMAP > and incorporated into this coverage. > > 2. The Pennsylvanian boundary arcs were copied into > the coverage. > > 3. Items for the .PAT and the .AAT files were added > to the coverage. > The .PAT items were: > thick 2 2 i > depth 2 2 i > tons 2 2 i > penn 2 2 i > cbn 20 20 c coalbodyname > done 2 2 i > > The .AAT items were: > thick 2 2 i > depth 2 2 i > penn 2 2 i > qual 2 2 i > done 2 2 i > > The "done" items were used during the attribute coding > phase to indicate whether or not coding of a feature was > complete. When this phase was complete, the "done" items > were deleted from the .PAT and .AAT files. Process_Date: 1995-96 Process_Step: Process_Description: Polygons and arcs for both the main working coverage and the inset coverage were coded according to the information depicted on the published map. In several cases, depth assignments were not obvious on the published map: in this case the source publications listed on the published map were consulted in order to make a depth assignment. The coverages at this point were CL4 (main map) and INSERT3 (inset portion). Process_Date: 1995-96 Process_Step: Process_Description: The inset coverage has polygons that overlap polygons on the main map coverage, which is why they were digitized and processed as two separate coverages. In order to join them into a single coverage, the Regions subclass function of Arc/Info was utilized. First, CL4 was copied to new name COAL2. Arcedit was used to select and put features from INSERT3 to COAL2. As a result, COAL2 had full arc and polygon topology from both CL4 and INSERT3. Next each polygon in COAL2 was coded for the appropriate coal body name. POLYREGION was used to create a region subclass called ALLCOALS in COAL2, which consisted of all polygons in the coverage. Then REGIONQUERY was used to generate the 12 coal region subclasses and the NOCOAL subclass from the ALLCOALS region. Process_Date: 1996 Process_Step: Process_Description: As a final processing step, the coverage was renamed COAL2-84. Process_Date: 1996 Process_Step: Process_Description: Revisions: Prior to 19951010 no revision numbers had been assigned to this coverage. The previous coverage that partially depicted this data will heretofore be assigned as revision #1, and this coverage is revision #2. Process_Date: 1995 Process_Step: Process_Description: Reviews Applied to Data: In late 1995 and early 1996 the coverage had an extensive Quality Assurance/Quality Control review. Linework was verified by overlaying a plot of the arcs on the original mylars. Digitized arcs within one line-width of the original linework were deemed acceptable. Those outside one line-width were corrected. Attribute values were verified by comparing a set of plots (that depicted the value of the .AAT or .PAT attribute) with the published maps. Reviews of this coverage were done by M. Riggs, S. Elinski and D. Nelson (in a reiterative fashion) until all linework and attribute coding was deemed acceptable. Process_Date: 1996 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 707 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 1960 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 708 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 33 0 0.000 Standard_Parallel: 45 0 0.000 Longitude_of_Central_Meridian: -89 30 0.000 Latitude_of_Projection_Origin: 33 0 0.000 False_Easting: 914400.00000 meters False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: unknown Ordinate_Resolution: unknown Planar_Distance_Units: feet Geodetic_Model: Horizontal_Datum_Name: NAD27 Ellipsoid_Name: CLARKE1866 Semi-major_Axis: 6378206.4 meters Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Attribute items are in typical ARC/INFO feature class format. This coverage has arc, polygon and region feature classes. > REGIONS > ----------------------------------------------------- > Arc/Info region Coal represented > sub-class > name > > ALLCOALS Areas on source map with coal > BELLERIVE Belle Rive > BRISTOL Bristol Hill > CALHOUN Calhoun > COLCH Colchester (no.2) > DEKOVEN Dekoven > FRIEND Friendsville > JAMES Jamestown > LOUDON Loudon > NOCOAL Areas on source map without coal > OCONEE Oconee > OPDYKE Opdyke > SHELBY Shelbyville > TROW Trowbridge > > > Region attributes: > For the region .PATs (there is a separate one for each region) > there are four items in addition to the four standard items. > They are: > > THICK - thickness of the coal body > 0 - mined out > 1 - coal is greater than 42 inches thick > 2 - coal is from 28-42 inches thick > 3 - coal is from 18-28 inches thick > 4 - insufficient data for resource estimation or > unmapped area > 5 - coal split or thin > 6 - coal missing due to sandstone channels > 7 - coal eroded > 8 - not used > 9 - outside limit of coal seam > 10 - coal deeper than 150 feet and less than 28 inches > thick or coal shallower than 150 feet and less > than 18 inches thick > 11 - area of potential resources; resources cannot be > be categorized at this scale due to irregularity > of thickness > 12 - coal less than 42 inches thick; resources not calculated > > DEPTH - depth to the coal body > 0 - mined out > 1 - depth to coal less than 150 feet > 2 - depth to coal 150-1000 feet > 3 - depth to coal greater than 1000 feet > 4 - depth to coal less than 1000 feet > 5 - not used > 6 - not used > 7 - not used > 8 - coal not present > 9 - outside limit of coal seam > 10 - coal deeper than 150 feet and less than 28 inches > thick or coal shallower than 150 feet and less > than 18 inches thick > 11 - area of potential resources; resources cannot > be categorized at this scale due to irregularity > of thickness > > TONS - estimated average tons of coal in millions of tons of > coal per square mile (estimates based on an assumed > coal density of 1800 tons per acre-foot) > 1 - less than 4 tons > 2 - 4 to 5.5 tons > 3 - 5.5 to 7 tons > 4 - greater than 7 tons > 5 - tonnage not calculated or not applicable > > PENN - indicates whether or not polygon is within > Pennsylvanian boundary > 0 - polygon is outside Pennsylvanian boundary > 1 - polygon is within Pennsylvanian boundary > > CBN - coal seam name > > > Arc attributes: > There are arc attributes for the entire coverage. There are > no arc attributes for the individual regions. There are four > items in addition to the standard ones. They are: > > THICK - indicates if arc is a coal isopach, and if so, > the thickness value associated with the isopach > 0 - arc is not an isopach > 1 - 28 inch isopach > 2 - 42 inch isopach > > DEPTH - indicates if arc is a depth contour, and if so, > the depth value (to the surface of the coal body) > associated with the depth contour > 0 - arc is not a depth contour > 1 - 150 depth contour > 2 - 1000 foot depth contour > > PENN - indicates whether or not arc is a part of the > Pennsylvanian boundary > 0 - arc is not a part of the Pennsylvanian boundary > 1 - arc is a part of the Pennsylvanian boundary > > QUAL - indicates if arc is represented in coverage > differently than it appears on source map > (qualifier for lines differing from source map) > 0 - no qualifier, line appears as a solid line on source map > 1 - line is dashed on source map > 2 - line does not appear on source map, has been > added in order to close a polygon > > Note: > There are 31 dangling arcs in this coverage. These > correspond to 31 dangling arcs on the original mylars > and the published map. Most of them are incomplete > 150 foot depth contour lines. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Illinois State Geological Survey Contact_Position: Information Office Contact_Address: Address_Type: mailing and physical address Address: 615 East Peabody Drive City: Champaign State_or_Province: Illinois Postal_Code: 61820 Country: USA Contact_Voice_Telephone: 217-333-4747 Contact_TDD/TTY_Telephone: 217-785-0211 Contact_Facsimile_Telephone: 217-244-0802 Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Distribution_Liability: The Illinois Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR 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 computers of DNR, no warranty, expressed or implied, is made by DNR 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 DNR 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 DNR. Resource_Description: An Arc/Info .e00 (export) file is currently available free of charge at the Illinois Natural Resources Geospatial Data Clearinghouse. Refer to the Citation Information portion of this file for access to downloadable data and metadata, and a visual (GIF image) representation of the data. Shift-click to download the data set and related documentation. (Data and metadata offered separately, please download both files.) Metadata_Reference_Information: Metadata_Date: 19980731 Metadata_Review_Date: 19980731 Metadata_Future_Review_Date: 200008 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Illinois State Geological Survey Contact_Position: Information Office Contact_Address: Address_Type: mailing and physical address Address: 615 East Peabody Drive City: Champaign State_or_Province: Illinois Postal_Code: 61820 Country: USA Contact_Voice_Telephone: 217-333-4747 Contact_TDD/TTY_Telephone: 217-785-0211 Contact_Facsimile_Telephone: 217-244-0802 Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: Version of June 8, 1994 Metadata_Access_Constraints: none Metadata_Use_Constraints: none