Bedrock Geology of Marion Quadrangle, Williamson County, Illinois

              Illinois Geologic Quadrangle Map
IGQ Marion-BG
Base map compiled by Illinois State Geological Survey from digital data provided by the United States Geological Survey. Topography compiled 1963. Planimetry derived from imagery taken 1993. PLSS and survey control current as of 1996. Partial field check 1996.
North American Datum of 1927 (NAD 27)
Projection: Transverse Mercator
10,000-foot ticks: Illinois State Plane Coordinate system, east zone (Transverse Mercator)
1,000-meter ticks: Universal Transverse Mercator grid system, zone 16
Recommended citation:
Nelson, W.J., 2007, Bedrock Geology of Marion Quadrangle, Williamson County, Illinois: Illinois State Geological Survey, Illinois Geologic Quadrangle Map, IGQ Marion-BG, 2 sheets, 1:24,000.
Geology based on field work and data analysis by W.J. Nelson, 2001–2003.
Digital cartography and graphics by J. Domier, T. Goeppinger, M. Jones, L. Verhelst, S. Geegan, and M. Widener, Illinois State Geological Survey.
The Illinois State Geological Survey, the Illinois Department of Natural Resources, and the State of Illinois make no guarantee, expressed or implied, regarding the correctness of the interpretations presented in this document and accept no liability for the consequences of decisions made by others on the basis of the information presented here. The geologic interpretations are based on data that may vary with respect to accuracy of geographic location, the type and quantity of data available at each location, and the scientific and technical qualifications of the data sources. Maps or cross sections in this document are not meant to be enlarged.
IGQ Marion-BG Sheet 1 of 2
BEDROCK GEOLOGY OF MARION QUADRANGLE
WILLIAMSON COUNTY, ILLINOIS
W. John Nelson
2007MAGNETIC NORTHAPPROXIMATE MEANDECLINATION, 2007TRUE NORTH / °12ROAD CLASSIFICATIONPrimary highway,hard surfaceSecondary highway,hard surfaceLight-duty road, hard orimproved surfaceUnimproved roadInterstate RouteState Route
ADJOINING
QUADRANGLES
1 Herrin
2 Johnston City
3 Pittsburg
4 Crab Orchard Lake
5 Crab Orchard
6 Lick Creek
7 Goreville
8 Creal Springs
BASE MAP CONTOUR INTERVAL 10 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929
For more information contact:Illinois State Geological Survey 615 East Peabody Drive
Champaign, Illinois 61820-6964
(217) 244-2414
http://www.isgs.uiuc.edu12345678
Released by the authority of the State of Illinois: 2007
7000
FEET10001000020003000400050006000.51 KILOMETER10SCALE 1:24,0001/2101 MILE
Illinois Department of Natural Resources
ILLINOIS STATE GEOLOGICAL SURVEY
William W. Shilts, Chief
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s&c&tu&tlsmc d mb hc s h PennsylvanianMissourianCarbondale Formation h, Herrin Coal Member s, Springfield Coal Member hc, Houchin Creek Coal Member c, Colchester Coal Member d, Davis Coal MemberTradewater Formation, upper part mb, top of Murray Bluff Sandstone MemberShelburn FormationTradewater Formation, lower partAtokanDesmoinesianEXPLANATIONSurface mine4254256"e"e"e"ekSGÄkªTh2500»¿Note: This is a subcrop map, showing bedrock surface with all Quaternary deposits removed. Geology shown as it was prior to surface mining. Well and boring records are on file at the ISGS Geological Records Unit and are available online from the ISGS Web site.SymbolsDrift mineShaft mineSlope mineVertical jointBedrock outcropBedrock outcrop now under water, from historic field notesDrill Holes from which subsurface data were obtainedStratigraphic boringWater wellEngineering boringCoal boringDry holeDry hole - show of oilDry hole - show of oil and gasNumbers indicate total depth of boring in feet.Boring with samples (S) or geophysical log (G).Dot indicates location accurate within 100 feet.Line Symbols dashed where inferred, dotted where concealed Contact or coal subcropNormal fault: bar and ball on downthrown sideElevation of top of Herrin Coal, contour interval 25 feetPreglacial valley, drawn along axis of valley with arrows in direction of stream flow4254004504256666666JNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNÄÄÄ¿»¿¿¿ªG"e"e"eªG"ekGªG"e"k"kS"eªG"e"e"e"e"k"kS"kS"kS"ekGªe"kS"e"kS"kS"kS"kG"kS"kSkS"k"k"kkGS"k"e"kSkGS"k"e"k"kª"k"k"k"kªG"k"e"k"k"kS"k"k"k"k"k"k"k"e"e"k"k"k"k"k"k"k"k"kªGSªGS"kS"kS"kS"ekGS"e$T$ThGS"kS"kS"eªG"kS46223766055169125236510847424223282340148705048735595705842056779370607014914965170110170160135224861665413021671605115540225702590671662213965065265321004511530077115927262002380242584085778261378956934161097314723024992695120254042374017372270hcmbmbmddmbhhcccdhcchssdWHITE ASH FAULT ZONE&c&c&c&csmsmsm&s&s&tu&tu&tu&tu&tl&tu&tu&tu&tu&tl