Yorktown Formation

Yorktown Formation
Stratigraphic range: Early to Middle Pliocene
Outcrop of the Yorktown Formation at Carters Grove Bluffs along the James River
Typesedimentary
Unit ofChesapeake Group
Sub-unitsSunken Meadow Member, Rushmere Member, Morgarts Beach Member, Moore House Member, Tunnels Mill Member
UnderliesCroatan Formation
OverliesEastover Formation
Lithology
Primarysand, clay
Othershells
Location
RegionAtlantic Coastal Plain of North America
ExtentMaryland, Virginia, North Carolina, South Carolina
Type section
Named forYorktown, Virginia
Named byClark and Miller, 1906

The Yorktown Formation is a mapped bedrock unit in the Coastal Plain of Maryland, Virginia, North Carolina and South Carolina. It is overconsolidated and highly fossiliferous.

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