Usage:
Walston Formation (DE*)
Walston Silt (MD*,DE*)
Geologic age:
late Tertiary (Pliocene)*
Type section, locality, area and/or origin of name:
Type locality: in banks of Waltston Branch, a tributary to Beaverdam Creek, Wicomico Co., MD (Rasmussen and Slaughter, 1955).
Reference locality (subsurface): test hole W1-Cg 40, 2 mi north of Parsonsburg (Rasmussen and Slaughter, 1955).
AAPG geologic province:
Atlantic Coast basin*
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 ([ ]).