- Usage in publication:
-
- Redstone limestone
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Appalachian basin
Summary:
Named as part of Monongahela formation, Probably for its relation to Redstone coal bed, which outcrops along Redstone Creek, Fayette Co., western PA. Redstone limestone is 8 to 10 ft thick, is basal member of Pittsburgh limestone group, and lies 30 ft above Pittsburgh coal and below Redstone coal. [Age is Pennsylvanian.]
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Redstone sandstone
- Modifications:
-
- Named
- Dominant lithology:
-
- Sandstone
- AAPG geologic province:
-
- Appalachian basin
Summary:
Named as part of Monongahela formation in Maryland, probably for its relation to Redstone coal, which outcrops along Redstone Creek, Fayette Co., western PA. Underlies upper bench of Redstone coal and overlies lower bench of Redstone coal. In places is absent, in other places 40 ft thick. [Age is Pennsylvanian.]
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Redstone Member*
- Modifications:
-
- Revised
- Age modified
- AAPG geologic province:
-
- Appalachian basin
Summary:
Revised as a member of Pittsburgh Formation (revised) of Monongahela Group (rank raised). Base defined as Redstone coal bed. Figure 75.2 indicates that Redstone member includes siltstone, siltstone with calcareous nodules, and rocks previously assigned to Fishpot Limestone Member of Monongahela Formation. Top is defined as base of Fishpot coal bed within revised Fishpot Member. Age is modified from Pennsylvanian to Late Pennsylvanian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Redstone Member*
- Modifications:
-
- Areal extent
- AAPG geologic province:
-
- Appalachian basin
Summary:
Used as Redstone Member of Pittsburgh Formation in PA and of Monongahela Formation in WV. Equivalent to Redstone cyclothem in OH, which overlies Upper Pittsburgh cyclothem at base of Monongahela 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 ([ ]).