U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Grove

Usage:

Grove Formation (MD*)
Grove Limestone (MD*)


Geologic age:

Cambrian, Late*
Ordovician, Early*


Type section, locality, area and/or origin of name:

Named from Grove quarry and Grove Station on the Baltimore and Ohio RR, Frederick Co., western MD, where it is exposed in syncline (Stose and Jonas, 1935; US geologic names lexicon, USGS Bull. 896).
In middle of Frederick Valley, forms belt about 1 mi wide that extends from point south of Buckeystown northward to LeGore, where it is overlapped diagonally by Triassic sedimentary rocks; belt widens north of Fountain Rock, and at north end, west of Woodsboro, attains width of 2 mi; several narrower bands lie to west of main belt, and extend from south end of Chestnut Hill southwestward to U.S. Highway 40, west of Frederick, western MD (Stose and Stose, 1946; US geologic names lexicon, USGS Bull. 1200).


AAPG geologic province:

Piedmont-Blue Ridge 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).