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LEEMON FORMATION, MAQUOKETA GROUP, CAPE LIMESTONE, KIMMSWICK LIMESTONE, NOIX-CYRENE LIMESTONE, MAQUOKETA SHALE

LEEMON FORMATION, MAQUOKETA GROUP INCLUDING: (GIRARDEAU LIMESTONE, ORCHARD CREEK SHALE, THEBES SANDSTONE, CAPE La CROIX SHALE), CAPE LIMESTONE, KIMMSWICK LIMESTONE, NOIX - CYRENE LIMESTONE, MAQUOKETA SHALE
State Missouri
Name LEEMON FORMATION, MAQUOKETA GROUP, CAPE LIMESTONE, KIMMSWICK LIMESTONE, NOIX-CYRENE LIMESTONE, MAQUOKETA SHALE
Geologic age Phanerozoic | Paleozoic | Ordovician-Middle Ordovician-Late
Comments IN SOUTHEAST MO- (Cincinnatian Series)-Leemon FM- (20 ft. max) oolitic limestone and minor shale; Maquoketa Gruop: Girardeau Limestone- (40 ft. max) gray limestone, Orchard Creek Shale- (50 ft. max) limestone with interbedded shale, Thebes Sandstone- (25 ft. max) quartz sandstone, Cape La Croix Shale (max thickness ?)- shale; Cape Limestone- (40 ft. max) argillaceous limestone; (Mohawkian Series), Kimmswick Limestone- (150 ft. max) massive limestone. IN NORTHEAST MO- (Cincinnatian Series), Noix-Cyrene Limestone- (10 ft. max) oolitic limestone; Maquoketa Shale- (70 ft. max) dolomitic shale; (Mohawkian Series), Kimmswick Limestone- (150 ft. max) massive limestone. Summary: mostly limestone and shale with minor sandstone
Primary rock type limestone
Secondary rock type shale
Other rock types sandstone
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)
Minor
Sedimentary > Clastic > Mudstone > Shale (Bed)
Incidental
Sedimentary > Clastic > Sandstone (Bed)
Map references
Middendorf, M. A., and others, 2003, Geologic Map of Missouri: Missouri Geological Survey. Scale 1:500K
Unit references
Howe, W. B. and Koenig, 1961, The Stratigraphic Succession in Missouri: Missouri Geological Survey and Water Resources, Vol XL. 2nd Series.
Counties Bollinger - Cape Girardeau - Franklin - Jefferson - Perry - Pike - Ralls - Sainte Genevieve - Saint Louis - Scott