Geology of Cypress Quadrangle, Union, Johnson, and Pulaski Counties, Illinois

              Illinois Geologic Quadrangle Map
IGQ Cypress-G
Base map compiled by the Illinois State Geological Survey from digital data (Raster Feature Separates) provided by the United States Geological Survey. Topography by photogrammetric methods from aerial photographs taken 1963. Field checked 1966.
North American Datum of 1927 (NAD 27)
Projection: Transverse Mercator
10,000-foot ticks: Illinois State Plane Coordinate system, east and west zones (Transverse Mercator)
1,000-meter ticks: Universal Transverse Mercator grid system, zone 16
Recommended citation:
Devera, J.A., and W.J. Nelson, 2009, Geology of Cypress Quadrangle, Union, Johnson, and Pulaski Counties, Illinois: Illinois State Geological Survey, Illinois Geologic Quadrangle Map, IGQ Cypress-G, 2 sheets, 1:24,000.
Geology based on field work and well-log analysis by J. Devera and J. Nelson, 1998–2005.
Digital cartography by J. Domier, M. Bentley, and M. Widener, Illinois State Geological Survey.
This research was supported in part by the U.S. Geological Survey, National Coopera­tive Geologic Mapping Program under USGS award number 06HQAG0053. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
The Illinois State Geological Survey and the University 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 Cypress-G Sheet 1 of 2
GEOLOGY OF CYPRESS QUADRANGLE
UNION, JOHNSON, AND PULASKI COUNTIES, ILLINOIS
Joseph A. Devera and W. John Nelson
20091°APPROXIMATE MEANDECLINATION, 2008MAGNETIC NORTHTRUE NORTHROAD CLASSIFICATIONPrimary highway,hard surfaceSecondary highway,hard surfaceLight-duty road, hard orimproved surfaceUnimproved roadState Route
ADJOINING
QUADRANGLES
1 Anna
2 Mt. Pleasant
3 Vienna
4 Dongola
5 Karnak
6 Pulaski
7 Olmsted
8 Bandana
12
345678
© 2009 by The Board of Trustees of the University of Illinois. All rights reserved.
For permission information, contact the Illinois State Geological Survey.
7000
FEET10001000020003000400050006000.51 KILOMETER10SCALE 1:24,0001/2101 MILE
Institute of Natural Resource Sustainability
William W. Shilts, Executive Director
ILLINOIS STATE GEOLOGICAL SURVEY
E. Donald McKay III, Interim Director
BASE MAP CONTOUR INTERVAL 10 FEET
SUPPLEMENTARY CONTOUR INTERVAL 5 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929
For more information contact:
Institute of Natural Resource Sustainability
Illinois State Geological Survey
615 East Peabody Drive
Champaign, Illinois 61820-6964
(217) 244-2414
http://www.isgs.illinois.edu
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QmQTmTKuKmMcyMrbMpoMavMsgMslMsmQceQchQhQcWisconsinanPlioceneHolocene Maastrichtian and CampanianMississippianCretaceousTertiaryQuaternaryMetropolis FormationMounds GravelTertiary and CretaceousundividedMcNairy and Post Creek Formations Cahokia and Equality FormationsCahokia and HenryFormations, mapped where Cahokia is 5 feet or thickerHenry Formation, mappedwhere Cahokia is thinner than 5 feetCypress FormationPaoli LimestoneAux Vases SandstoneUnconformityRidenhower Shaleand Bethel SandstoneCahokia Formation (clay facies) EXPLANATIONSt. Louis LimestoneSalem LimestoneSte. Genevieve LimestoneChesterianValmeyeran or MeramecianMiocene to Campanianpre-IllinoianUnconformityUnconformityUnconformityIllinoianCahokia FormationNote: Loess deposits, comprising the Peoria, Roxana, and Loveland Silts, cover nearly all upland areas of the Cypress Quadrangle. These units are not shown on the geologic map. AA􀀁􀄢"e""eekSGC54Qeª$TÄo45eSymbolsStrike and dip of bedding, number indicates degree of dip Vertical jointsHorizontal beddingOutcrop, not shown in northeast quarter of map where outcrops are numerousDrill Holesfrom which subsurface data were obtained.Stratigraphic boring (ISGS)Water wellEngineering boringDry oil test hole Letters indicate samples (S), geophysical log (G), or core (C). Numeric label indicates total depth of boring in feet. Unit label denotes formation at bottom (br, Mississippian bedrock; Qpl, Pearl Formation). Dot indicates location accurate within 100 feet.Line SymbolsDashed where inferred, dotted where concealedContactNormal fault: bar and ball on downthrown side at top of Mississippian bedrockLine of cross section Note: Well and boring records are on file at the ISGS Geological Records Unit and are available from the ISGS Web site. JNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNJNA􀀁􀅁A"kC"kC"k"kS"k"e"e"kC"k"kS"k"k"k"e"k"kC"e"k"k"kC"e"kC"k"k"e"k"e"e"k"k"k"e"kS"e"k"k"kC"kS"kC"kC"k"k"kS"e"k"kS"k"k"kC"k"kCܪGS"kS"e"k"k"k"k"k"kC"e"kS"k"k"k"k"kS"kS"e"e"kS"kS"kS"e"kS"kS"e$T$T$T$T$T$T$T$T$T$T$T$T$T$Teoo"kS"eSSSSSSSSSSS617638228225515154105149293875716422332644110518720332213517557169112116130769014830501231934611512510023190100101154067120915015016514010085351504564528530330210200260210871161655010312312581140303015018brMpobrbrMsgQeQeQeMslMslMslQeQchQhbrQcMsgMsgbrbrQhbrQhDevonianQcebrQhQplQplQplQhQhQplbrQebrQceQhQcebrQhbrQhQhbrbrbrbrbrbrbrbrbrbrbrkmkmbrkmbrbrbrbrbrQcebrQmbrbrbrQplrkmkmbrQhQceQceQce3223QmQceQhKmKmKmKmQceQceMsgQceQceQceQceMsgMsgMavMavMpoMrbMrbMcyQcQcMsgQceQceMcyTKuMcyMrbMpoMrbMslQcMcyMslMavTmQceMsgQc(c)MslQceMavMslMavQceQceMavMavQceMsgQceMrbMcyMpoMavMsgMslMslMsgMavMavMavMsgMpoMslQchQchQhQceQceQhQhQhQhQhQhQc(c)Qc(c)Qc(c)Qc(c)Qc(c)QhQhQchQhQceMslQceQTmQceQhQhMslQTmMslQceQceQceMsmMsmQc(c)KmKmQTmQceQc(c)QceKmKmQTmQTmQTmKmKmQceQTmMsgQchQchQchMpoMpoQceKmKm