Tabb Formation; Lynnhaven Member

Lynnhaven Member (Johnson, 1976). Pebbly and cobbly, fine to coarse gray sand grades upward into clayey and silty fine sand and sandy silt; locally, at base of unit, medium to coarse cross-bedded sand and clayey silt containing abundant plant material fill channels cut into underlying stratigraphic units. Unit is surficial deposit of broad swale that is traceable southward from Norfolk; extensive low lands bounded on landward side by river-, bay-, and ocean-facing scarps having toe altitudes of 15 to 18 feet. Thickness is 0 to 20 feet.
State Virginia
Name Tabb Formation; Lynnhaven Member
Geologic age Quaternary
Lithologic constituents
Major
Unconsolidated > Fine-detrital > Silt
Unconsolidated > Coarse-detrital > Sand
Comments Coastal Plain
References

Virginia Division of Mineral Resources, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources, scale 1:500,000.

Virginia Division of Mineral Resources, 2003, Digital Representation of the 1993 Geologic Map of Virginia, Publication 174, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, scale 1:500,000.

NGMDB product
Counties Charles City - Essex - Gloucester - Henrico - King and Queen - New Kent - Prince George - Westmoreland - York - Chesapeake - Hampton - Newport News - Norfolk - Poquoson - Portsmouth - Suffolk - Virginia Beach