- Usage in publication:
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- Acredale Formation
- Modifications:
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- Named
- Dominant lithology:
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- Sand
- AAPG geologic province:
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- Atlantic Coast basin
Summary:
Acredale Formation. Great Bridge (base), Norfolk, and Kempsville Formations are here reduced to members and assigned to the Acredale, as together they represent a single transgressive-regressive event which includes estuarine silty sands, continental shelf sands, and beach to fluvial sands. Unit unconformably underlies Powells Crossroads Formation, also named in this report; base is not exposed at type section where formation is approximately 9 m; elsewhere the Acredale overlies Pliocene Croatan Formation. Age is late Pleistocene, based on fauna.
Named for municipality in the City of Virginia Beach, VA.
A reference section is established 0.33 mi north of the intersection of Centerville Turnpike and Kempsville Road (Mears Corner). Here the base of the Acredale is marked by a layer of in situ tree stumps and boulders.
Source: Modified from GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).