Pg. 449, 462, 699. Alderson limestone. Usually a dark-gray calcareous formation, weathering almost dirty yellow, 75 to 325 feet thick, with abundant marine fossils and plants in chalky beds above middle. Top member of Greenbrier series [limestone]. Overlies Greenville shale and underlies Lillydale shale. Age is Mississippian.
Type locality on road toward Wolf Creek, one-third mi south of Alderson, Monroe Co., eastern WV. Also observed in Summers Co., eastern WV, and in Giles Co., southwestern VA. Can be traced northeastward to Tucker Co., WV. Southward it corresponds to Glen Dean limestone and Golconda shale.
Source: US geologic names lexicon (USGS Bull. 896, p. 29).
Unit mapped as Alderson Limestone of Greenbrier Group.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).