Category:Producing Zones and Informal Names

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TrivoliAnvil Rock, Cuba, U. Dudley,Jake Cr., Jamestown, Plesantview,1st or U. SigginsBellair 500, Bridgeport, Claypool, L. Dudley, Isabel, Kickapoo, Petro, Robinson, 2nd or L. Siggins, WilsonBellair 800, Burtschi, Casey, Mansfield, Dagley, Partlow, 3rd, 4th, SigginsBiehl, Buchanan, Jordan, Pottsville, RidgleyGolconda limeGol. ShBig Clifty, JacksonBarlow, basal Gol.Weiler, Kirkwood, Carlyle, Bellair 900, LindleySample P.Cr.SdPaint Cr. SdL.P.C., U. RenBenoistL. RenAux Vases limeOharaMcClosky (Oblong) L. McCloskyWarsawOsage, Cole,Sonora, CarperHardinHibbard, HoingGeneva, Dutch CreekFlat Gap LimestoneBeaucoupSilurian, NiagaranKimmswick (Trenton)GOI-ch15-fig15.jpg
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Generalized geological column of southern Illinois. Size of solid dots indicates relative amount of petroleum produced from individual pay zones. Formation names are in capital letters. Abbreviations: A., Alexandrian; Cinc., Cincinnatian; Cr., Creek; E., eastern; Gol., Golconda; Incl., including; K., Kinderhookian; L., lower; Niag.-Cayug., Niagaran-Cayugan; P. Cr. Sd, Paint Creek Sand; Ren., Renault; Sh, shale; U., upper; U.P.C., Upper Paint Creek; W., western.

Modified from: Kolata, Dennis R, and Cheryl Nimz, eds., 2010, Geology of Illinois: University of Illinois at Urbana-Champaign, Institute of Natural Resource Sustainability, Illinois State Geological Survey, 530 p.