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Topo

Rock Formations

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Topo

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Cratonal Sequence - Marine siltstone, limestone, and conglomerate (NVTRmt;0)

Geologic Formation in NV, ID

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Lithology

Sandstone

Mudstone

Claystone

Other (750 mi²)

Geologic Age

Early Triassic – Middle Triassic (252.23 Ma – 237 Ma ago)

Geologic Unit Label

TRmt

Unit consists of marine deposits of siltstone, sandstone, claystone, mudstone, limestone, and conglomerate (Stewart and Carlson, 1978). It includes rocks assigned to the Moenkopi and Thaynes Formations and related unnamed rocks in northern Nevada (Stewart, 1980). It crops out in the eastern part of the State in Elko, White Pine, Lincoln, and Clark Counties.

— USGS

Taxonomy

Classified As

Geologic Formation