Usage:
Cherry Brook Formation (MA*)
Geologic age:
Neoproterozoic*
Type section, locality, area and/or origin of name:
Type locality: approx. 1 mi (1.6 km) north of Natick quadrangle in adjoining Concord quadrangle, southeast of Merriam Street crossing of Cherry Brook, with felsic volcanic rocks about 0.6 mi (0.96 km) east of Merriam Street, along railroad in Natick quadrangle, Middlesex Co., eastern MA (Nelson, 1974).
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 ([ ]).