Marsh and Intertidal Mud Deposits

Medium to dark-gray soft mud, and grayish-brown peat, comprising sediment of marshes in coastal areas and Chesapeake Bay; thickness is 0 to 10 feet. Also, sandy mud and muddy fine sand, light- to dark-gray. Locally, contains abundant shell material characterized by Crassostrea virginica and Mercenaria mercenaria. Comprises sediments of shallow bays and flats in area of Atlantic coastal lagoons of the Eastern Shore.
State Virginia
Name Marsh and Intertidal Mud Deposits
Geologic age Quaternary
Lithologic constituents
Major
Unconsolidated > Fine-detrital > Silt
Unconsolidated > Fine-detrital > Clay
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 Accomack - Gloucester - Lancaster - Mathews - Northampton - Northumberland - York - Chesapeake - Hampton - Poquoson - Virginia Beach