- Usage in publication:
-
- Fairfield member
- Modifications:
-
- Original reference
- Dominant lithology:
-
- Sandstone
- Shale
- AAPG geologic province:
-
- Appalachian basin
Summary:
Pg. 656, 657, 671. Fairfield member of Cuyahoga formation. Alternating sandstones and shales; the sandstones typically coarse, reddish, yellowish, brown or bluish gray, sometimes pebbly and commonly in massive members, 20 to 60 feet thick, with intervening shaly members of similar thickness; the shale strata formed of thin interbedded sandstones and shales, the former likely to be very coarse even where thin. Thickness 200 to 330 feet. Included in Cuyahoga formation of Faifield and Hocking Counties. Overlies Lithopolis member, and underlies Black Hand member [restricted use of Black Hand]. Age is Mississippian.
Named from development in Fairfield Co., south-central OH.
Source: US geologic names lexicon (USGS Bull. 896, p. 714).
- Usage in publication:
-
- Fairfield member
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Appalachian basin
Summary:
Pg. 45. Fairfield member included in Hocking Valley conglomerate facies. Consists of thick coarse- and medium-grained sandstones alternating with shale layers commonly of equal thickness with the sandstones. Thickness of each sandstone may be as much as 65 feet. Overlies Lithopolis sandstone member; underlies Black Hand conglomerate member. [Age is Early Mississippian (Kinderhookian).]
Source: US geologic names lexicon (USGS Bull. 1200, p. 1309).
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 ([ ]).