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Ordovician rocks, undifferentiated

Ordovician rocks, undifferentiated - Shale and limestone; upper part of Maquoketa Group in deep buried valleys; Maquoketa to upper part of Knox Supergroup in Kentland area
StateIndiana
NameOrdovician rocks, undifferentiated
Geologic ageSilurian
Original map labelO
Primary rock typeshale
Secondary rock typelimestone
Other rock typesdolostone (dolomite)
Lithologic constituents
Major
Sedimentary > Carbonate > LimestoneOrdovician rocks, undifferentiated Shale and limestone; upper part of Maquoketa Group in deep buried valleys; Maquoketa to upper part of Knox Supergroup in Kentland area
Sedimentary > Clastic > Mudstone > Shale
Minor
Sedimentary > Carbonate > DolostoneOrdovician rocks, undifferentiated Shale and limestone; upper part of Maquoketa Group in deep buried valleys; Maquoketa to upper part of Knox Supergroup in Kentland area
Map references
Gray, Henry H., Ault, Curtis, H., and Keller, Stanley, J., 1987, Bedrock geologic map of Indiana: Dept. of Natural Resources, Indiana Geological Survey, Miscellaneous Map 48, scale = 1:500,000
Unit references
Gray, Henry H., Ault, Curtis, H., and Keller, Stanley, J., 1987, Bedrock geologic map of Indiana: Dept. of Natural Resources, Indiana Geological Survey, Miscellaneous Map 48, scale = 1:500,000
Geographic coverageAdams - Blackford - Delaware - Grant - Henry - Jay - Madison - Newton - Randolph - Wabash

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