Usage:
Cobham Bay Member of Eastover Formation of Chesapeake Group (MD*,NC*,VA*)
Geologic age:
Tertiary*
Miocene, late*
Tortonian*
Type section, locality, area and/or origin of name:
Type section: exposures 0.8 km below Cobham Wharf, right bank of James River, Surry Co., southeastern VA. Named from exposures along James River at Cobham Bay (Ward and Blackwelder, 1980).
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 ([ ]).