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SILURIAN SYSTEM

SILURIAN SYSTEM - JOLIET LIMESTONE, BOWLING GREEN DOLOMITE, BRYANT KNOB FORMATION, BAINBRIDGE FORMATION, SEXTON CREEK LIMESTONE
State Missouri
Name SILURIAN SYSTEM
Geologic age Phanerozoic | Paleozoic | Silurian-Early Silurian-Middle(?) Silurian-Late
Comments IN NORTHEAST MO- (Landoverian Series), Joliet Limestone- (60 ft. max) thin bedded cherty limestone; Bowling Green Dolomite- (60 ft. max) medium to thick bedded finely crystalline dolomite with some shale partings; Bryant Knob FM- (20 ft. max) bioclastic limestone, dolomitic limestone and some black shale, (includes Kissenger Limestone member- bioclastic limestone). IN SOUTHEAST MO- (Wentlockian-Ludlovian Series), Bainbridge FM- (160 ft. max) dark red argillaceous limestone, (includes Seventy- Six Shale member- shaly limestone); (Landoverian Series), Sexton Creek Limestone- (60 ft. max) cherty limestone interbedded with some shale Summary: mostly limestone with dolostone and some shale
Primary rock type limestone
Secondary rock type dolostone (dolomite)
Other rock types shale
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)
Minor
Sedimentary > Carbonate > Dolostone (Bed)
Incidental
Sedimentary > Clastic > Mudstone > Shale > Black-shale (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 - Lincoln - Perry - Pike - Sainte Genevieve - Saint Louis - Scott