- Usage in publication:
-
- Armstrong member
- Modifications:
-
- Original reference
- Dominant lithology:
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- Sandstone
- AAPG geologic province:
-
- Appalachian basin
Conrey, G.W., 1921, Geology of Wayne County, [Ohio]: Ohio State University, PhD dissertation, 155 p.
Summary:
Pg. 54. Armstrong member of Cuyahoga formation. Greenish buff, fine-grained sandstone, 25 to 35 feet thick. Upper part in layers 2 to 6 inches thick; lower 25 feet massive, irregularly bedded, with marked tendency toward lenticular beds. Underlies Black Hand member and overlies Burbank member. Age is Mississippian.
Named from exposure near village of Armstrong, Wayne Co., north-central OH.
Source: US geologic names lexicon (USGS Bull. 896, p. 75).
- Usage in publication:
-
- Armstrong sandstone member
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Appalachian basin
Summary:
Pg. 41 (table 2), 49, 50-51; Illinois Acad. Sci. Trans., v. 34, no. 2, p. 172. Described as Armstrong sandstone member of River Styx conglomerate facies and Killbuck shale facies of Cuyahoga formation. In River Styx facies, Armstrong includes Rittman conglomerate submember. Age is Mississippian.
Source: US geologic names lexicon (USGS Bull. 1200, p. 137).
- Usage in publication:
-
- Armstrong member
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Appalachian basin
Summary:
Armstrong member of Cuyahoga formation. Overlies Rittman which is here raised to member status; underlies Wooster member (new) used in place of Black Hand which is here restricted. Age is Early Mississippian.
Source: US geologic names lexicon (USGS Bull. 1200, p. 137).
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 ([ ]).