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Rock Formations

Measure

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Topo

Ecoregions

Public Lands

...

BASEMAPS

Default Weather

Temperature

Smoke

...

WEATHER

Martinsburg Formation (WVOm;0)

Geologic Formation in WV, VA, MD

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Lithology

Geologic Age

Ordovician (487.3 Ma – 445.3 Ma ago)

Geologic Unit Label

Om

Predominantly gray to dark shale, yellowish in the upper portion. Contains scattered thin limestone and sandstone interbeds, particularly in the lower portion. The upper portion constitutes the Reedsville Shale.

— USGS

Rhynchonellata CLASS

Taxonomy

Geographic Places

Geological Feature

Geologic Formation

Classified As

Geologic Formation

Martinsburg Formation (WVOm;0)

Martinsburg Formation (WVOm;0)

Martinsburg Formation (WVOm;0)