Usage:
Chase Brook Formation (ME)
Geologic age:
Early Ordovician
Type section, locality, area and/or origin of name:
Type section: in Chase Brook, from point 270 m to point 1.6 km from its mouth in Chase Lake, in T. 9, R. 10, Spider Lake quadrangle, Piscataquis Co., north-central ME (Hall, 1970).
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 ([ ]).