Usage:
Clough Quartzite (ME*,MA*,NH*)
Clough Quartzite of Bolton Group (CT*)
Clough Formation (MA*,NH*,VT*)
Geologic age:
early Silurian (Llandovery)*
Type section, locality, area and/or origin of name:
Clough Hill district, Moosilauke quadrangle, central NH (Billings, 1934).
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 ([ ]).