- Usage in publication:
-
- Roach Creek sandstone
- Modifications:
-
- Named
- Dominant lithology:
-
- Sandstone
- AAPG geologic province:
-
- Appalachian basin
Summary:
Named as a formation in Graves Gap group. Named for Roach Creek, near Dean, Block quad, Scott Co., eastern TN. Consists of sandstone. Thickness is 60 ft near Roach Creek, 20 to 80 ft in western part of Cumberland Mountains; thins to 20 to 25 ft near Fonde, KY. Separated from overlying shales of Redoak Mountain group (new) by a shale interval 50 to 90 ft thick that contains Craig coal and Windrock coal; separated from underlying Armes Gap sandstone (new) by a shale interval 60 to 130 ft thick that contains Pioneer coal. Age is Pennsylvanian (Pottsville series). Report includes geologic maps, cross sections, stratigraphic sections, and correlation chart.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Roach Creek Sandstone Member*
- Modifications:
-
- Areal extent
- AAPG geologic province:
-
- Appalachian basin
Summary:
Used as Roach Creek Sandstone Member of Graves Gap Group in TN.
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 ([ ]).