Usage:
Jamestown Formation of Conanicut Group (RI-recognized locally around Conanicut Island)
Subunits:
(alphabetical) --all in RI: Bass Rock Member, Beavertail Point Member, Hull Cove Member, Lion Head Member.
Geologic age:
Middle Cambrian
Type section, locality, area and/or origin of name:
Conanicut Island, southern Narragansett Bay, southeastern RI. First described at Beavertail Point on Conanicut Island. Named from town of Jamestown (Skehan and Rast, 1990).
AAPG geologic province:
New England province
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 ([ ]).