The Paleontology of North America

The Silurian in West Virginia, US

 map
 

See exposures in this state from the:

Quaternary
Tertiary
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Precambrian

Silurian Fossils
Fossil photos from Silurian in West Virginia

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Paleontology and geology

During the Silurian, West Virginia was under water and the rocks of this period indicate a wide range of shallow marine and tidal environments. Early Silurian rocks are mostly nearshore and shallow marine deposits, including shales and sandstones rich in iron. These sediments represent materials eroding off land raised by mountain building during the Ordovician. By the Late Silurian, land had eroded to near sea level and little sand or mud reached the sea. The rocks from this environment consist of limestones deposited in shallow water marine settings and contain evidence of evaporites formed on tidal flats. These limestones are sometimes interbedded with red shales representing the periodic formation of subtropical deltas. Straight-shelled nautiloids and ostracodes are common fossils in West Virginia’s Silurian rocks. This map shows thin bands of Silurian rock in the eastern portion of the state.

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