Geologic Unit: Sand Bridge

Usage:

Sand Bridge Formation (VA)
Sand Bridge Member of Powells Crossroads Formation (VA)

Geologic age:

Quaternary
Pleistocene, late

Type section, locality, area and/or origin of name:

Designated in unpublished thesis (Oaks, 1965) at boring PA-26. Named from community of Sand Bridge, Princess Anne Co., VA (Coch, 1965).
Reference sections: upper member, sand facies, exposure in borrow pit, just east of Shingle Creek where creek crosses U.S. Highway 13-58-460, 0.9 mi west of Magnolia, north side of road; clayey-sand facies, exposure at Wilkersons Landing, northeast shore of Nansemond River 1.75 mi southwest of Nansemond River Bridge (Route 17), Nansemond Co.; lower member and upper member (silty-sand facies), plastic-tube boring southside of road leading to Bennetts Creek Nike Base, just off State Road 626, 0.85 mi south of U.S. Highway 17; upper member, silty-clay facies, exposure in hand-auger boring in drainage ditch, 300 ft southeast of intersection of State Highway 10-31 and State Road 704 (Coch, 1965).

AAPG geologic province:

Atlantic Coast basin