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Limestone and sandstone; Early Jurassic Cordilleran retroarc-foreland-basin deposits; southeastern Idaho

Lower Jurassic shallow-marine to non-marine sediments; shaley, sandy limestone overlaying red, crossbedded sandstone of eastern Idaho.
StateIdaho
NameLimestone and sandstone; Early Jurassic Cordilleran retroarc-foreland-basin deposits; southeastern Idaho
Geologic ageEarly Jurassic
Original map labelJl
Commentsshallow marine limestone (lower Twin Creek Fm), and shallow marine to eolian sandstone (upper Nugget Sandstone)
Primary rock typelimestone
Secondary rock typesandstone
Other rock types
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)Nugget Sandstone (upper part is Jl)
Sedimentary > Carbonate > Limestone (Bed)Twin Creek Limestone (lower part is Jl)
Map references
Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000.
Unit references
Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000.
Geographic coverageBear Lake - Bingham - Bonneville - Caribou - Custer

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