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Yorktown Formation
Geological Formation in the United States / From Wikipedia, the free encyclopedia
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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.
Quick Facts Type, Unit of ...
Yorktown Formation | |
---|---|
Stratigraphic range: Late Miocene to Middle Pliocene | |
![]() Outcrop of the Yorktown Formation at Carters Grove Bluffs along the James River | |
Type | sedimentary |
Unit of | Chesapeake Group |
Sub-units | Sunken Meadow Member, Rushmere Member, Morgarts Beach Member, Moore House Member, Tunnels Mill Member |
Underlies | Croatan Formation |
Overlies | Eastover Formation |
Lithology | |
Primary | sand, clay |
Other | shells |
Location | |
Region | Atlantic Coastal Plain of North America |
Extent | Maryland, Virginia, North Carolina, South Carolina |
Type section | |
Named for | Yorktown, Virginia |
Named by | Clark and Miller, 1906[1] |
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