USGS Geoscience Data Catalog
Additional USGS Geoscience data can be found by geographic location or by publication series.
U.S. Geological Survey Central Region Energy Resources Team, 2002, Thickness of the Danville Coal in Illinois: U.S. Geological Survey Professional Paper 1625-D, U.S. Geological Survey, Denver, Colorado.This is part of the following larger work.
(ed.), J.R. Hatch , and (ed.), R.H. Affolter , 2002, Resource Assessment of the Springfield, Herrin, and Danville and Baker Coals in the Illinois Basin: U.S. Geological Survey Professional Paper 1625-D, U.S. Geological Survey, Denver, Colorado.This is part of the following larger work.
U.S. Geological Survey, 2002, National Coal Resource Assessment: U.S. Geological Survey Professional Paper 1625, U.S. Geological Survey, Denver, Colorado.
This is a Vector data set. It contains the following vector data types (SDTS terminology):
The map projection used is Lambert Conformal Conic.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest unknown
Ordinates (y-coordinates) are specified to the nearest unknown
Planar coordinates are specified in feet
The horizontal datum used is NAD27.
The ellipsoid used is CLARKE1866.
The semi-major axis of the ellipsoid used is 6378206.4 meters.
The flattening of the ellipsoid used is 1/294.98.
0 - outside limit of coal seam (crop holes) 2 - coal split or thin 3 - coal missing due to sandstone channels 5 - insufficient data 22 - coal is less than 28" thick 28 - coal is from 28"-42" thick 42 - coal is from 42"-66" thick 66 - coal is greater than or equal to 66" thickAreas defined as "no coal" or "Insufficient Data" are where the *position* of the coals is identifiable using the surrounding stratigraphy, but there is no coal preserved in the rock record. They are areas within the outcrop extent of the coal beds where we have data essentially demonstrating zero coal thickness. Some features may have been defined as "Unassessed." These are areas which exist within the coal extent but have not been assessed and have no value.
217-244-2422 (voice)
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colin@isgs.uiuc.edu
This map was created as part of the National Coal Resource Assessment being conducted by the USGS.
Illinois State Geological Surve, Coal Section, 1997, Illinois Coal Reserves Assessment and Database Development: Final Report: Open File Series 1997-4, Illinois State Geological Survey, Champaign, Illinois.
Illinois State Geological Surve, Coal Section, 1996, Coal Resources of Illinois: Danville (No.7) Coal: ISGS GIS Database /gisdb/illinois/minres/coal7-84, Illinois State Geological Survey, Champaign, Illinois.
Treworgy, J.D. and M.H. Bargh, 1984, Coal Resources of Illinois: Danville (No.7) Coal: ISGS Map same as title, Illinois State Geological Survey, Champaign, Illinois.
Hunter, K., Original mylar separate for coal seam boundary lines on the map: Coal Resources of Illinois: Danville (No.7) Coal.
Hunter, K., Original mylar separate for 150 foot depth contours on the map: Coal Resources of Illinois: Danville (No.7) Coal.
Hunter, K., Original mylar separate for Pennsylvanian boundary lines on the map: Coal Resources of Illinois: Danville (No.7) Coal.
Illinois State Geological Survey, 1984, Township Lines of Illinois: ISGS GIS Database /gisdb/illinois/illimap/townships, Illinois State Geological Survey, Champaign, Illinois.
Illinois State Geological Survey, 1984, Illinois County Boundaries: ISGS GIS Database /gisdb/illinois/illimap/counties, Illinois State Geological Survey, Champaign, Illinois.
Cady, G.H., and others, 1952, Minable Coal Reserves of Illinois as of 1950: ISGS Bulletin 78, Illinois State Geological Survey, Champaign, Illinois.
Clegg, K.E, 1972, Subsurface Geology and Coal Resources of the Pennsylvanian System in De Witt, McLean, and Piatt Counties, Illinois: Circular 473, Illinois State Geological Survey, Champaign, Illinois.
Jacobson, R.J., 1985, Coal Resources of Grundy, La Salle, and Livingston Counties, Illinois: ISGS Circular 536, Illinois State Geological Survey, Champaign, Illinois.
Jacobson, R.J., and L.E. Bengal, 1981, Strippable Coal Resources of Illinois, Part 7 Vermilion and Edgar Counties: Circular 521, Illinois St. Geological Survey, Champaign, Illinois.
Smith, W.H., 1957, Strippable Coal Reserves of Illinois. Part 1: Gallatin, Hardin, Johnson, Pope, Saline, and Williamson Counties: Circular 228, Illinois State Geological Survey, Champaign, Illinois.
Smith, W.H. and D.J. Berggren, 1963, Strippable Coal Reserves of Illinois. Part 5A: Fulton, Henry, Knox, Peoria, Stark, Tazewell, and parts of Bureau, Marshall, Mercer, and Warren Counties: Circular 348, Illinois State Geological Survey, Champaign, Illinois.
Smith, W.H., 1968, Strippable Coal Reserves of Illinois, Part 6: LaSalle, Livingston, Grundy, Kankakee, Will, Putnam, and parts of Bureau and marshall Counties: Circular 419, Illinois St. Geological Survey, Champaign, Il.
Treworgy, C.G. and M.H. Bargh, 1982, Deep-Minable Coal Resources of Illinois: Circular 527, Illinois State Geological Survey, Champaign, Illinois.
RES THICK GE 66 CALC THICK = 66 AS RES THICK > 0 AND THICK LT 30 CALC THICK = 22 AS RES THICK GE 30 AND THICK LT 42 CALC THICK = 28 AS RES THICK GE 42 AND THICK LT 66 CALC THICK = 42 AS RES CTYPE96 (or CTYPE94) = 2 CALC THICK = 2 AS RES CTYPE96 (or CTYPE94) = 3 CALC THICK = 3 AS RES CTYPE96/94 = 5 CALC THICK = 5 AS RES CTYPE96/94 = 6 CALC THICK = 6 AS RES CTYPE96/94 = 9 CALC THICK = 9 Q STOPStep 2 - the coverage was checked to determine that the universe polygon thickness had a value of zero.
(cd /coal1/strat/info4) SEL SELECT-POINTS-JAMIE PURGE SEL STRATGEO1 RES BY CO-CODE = [co-code] RES N-CODE = [seam#] REL SELECT-POINTS-JAMIE BY IDVS APPEND CALC $1COUNT = 0 REL SELECT-POINTS-JAMIE BY IDVS SEQ CALC $1THICKNESS = $1THICKNESS + THICKNESS CALC $1COUNT = $1COUNT + 1 SEL SELECT-POINTS-JAMIE RES COUNT = 0 PURGE REL STRATHEAD BY IDVS SEQ MOVE $1CONFIDENTIAL TO CONFIDENTIAL REL STRATLOC BY IDS SEQ CALC LAMCORX = $1LAMCORX CALC LAMCORY = $1LAMCORY CALC COUNT = $RECNO SEL TEMP-DUPS-JAMIE PURGE /*this next section removes duplicates REL SELECT-POINTS-JAMIE REL TEMP-DUPS-JAMIE BY IDS APPEND MOVE 'Y' TO $1CONFIDENTIAL REL TEMP-DUPS-JAMIE BY IDS SEQ CALC $1RECNO = $RECNO RES $1CONFIDENTIAL = 'Y' AND CONFIDENTIAL = 'N' CALC $1RECNO = $RECNO AS RES $1RECNO = $RECNO NSEL PURGE OUTPUT TEMP-JAMIE INIT RES LAMCORX < 1 PURGE CALC $COMMA-SWITCH = -1 DIS $RECNO,',',LAMCORX,',',LAMCORY PRINT cd /coal13/natl-coal-assmt/coal-isopachs/<seam>/<county> arc generate springpts input /coal1/strat/info4/temp-jamie point q build springpts point additem springpts.pat springpts.pat idvs 15 15 c additem springpts.pat springpts.pat confidential 1 1 c additem springpts.pat springpts.pat thickness 7 7 n 2 info arc ADIR /coal1/strat/info4 take sta SELECT-POINTS-JAMIE SEL SELECT-POINTS-JAMIE EXT /coal1/strat/info4/sta216dat SEL SPRINGPTS.PAT REL SELECT-POINTS-JAMIE BY SPRINGPTS-ID LINK MOVE $1CONFIDENTIAL TO CONFIDENTIAL MOVE $1IDVS TO IDVS CALC THICKNESS = $1THICKNESSStep 4 - the resource coverages were dissolved on thickness Example for Fayette County: dissolve res2790-fay ds2790-fay thick poly
Danville Coal thickness isopachs were updated for Coles, Edgar,
Cumberland, Clark, Jasper, Crawford, Effingham, Richland, and Lawrence
counties in 1996. The updated resource coverages were used for
these counties. The thickness values for the remaining counties were
extracted from previous resource coverages. Any discrepancies were
compared to the original source paper map or mylar separate.
Isopachs are based on public data available to the ISGS at the time
of the original map compilation. Accuracy of this compilation is
dependent on the locational and measurement accuracy of the original
data points, the distribution of data points, the local variability
of the coal seam and other factors.
This is a generalized depiction of regional ground condition.
The 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.
In areas of limited data, boundaries have been generalized using
section lines and/or county boundaries.
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.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints: none
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USGS Professional Paper 1625-D
This Compact Disc-Read Only Memory (CD-ROM) publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
Although all data and software published on this CD-ROM are used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the U.S. Geological Survey as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials.
| Data format: | Geographic features and attribute data in format ArcView shapefile (version 1.0) |
|---|---|
| Network links: |
<http://energy.cr.usgs.gov/coal/nca/> |
217-244-2422 (voice)
217-333-2830 (FAX)
colin@isgs.uiuc.edu
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://geo-nsdi.er.usgs.gov/metadata/professional-paper/1625/d/Il/Da/ildathk.faq.html
Page Contact Information: Peter Schweitzer
Page Last Modified: Monday, 10-Nov-2008 12:20:39 EST
