- Usage in publication:
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- Indian Fork sandstone
- Modifications:
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- Original reference
- Dominant lithology:
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- Sandstone
- AAPG geologic province:
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- Appalachian basin
Summary:
Pg. 6, 19, pls. 2, 3, 4. Indian Fork sandstone of Indian Bluff group. Thickness 15 to 60 feet. Separated from overlying Pioneer sandstone by shale interval that is as much as 80 feet thick in places; separated from underlying Stockstill sandstone (new) by a shale interval that averages 40 to 60 feet in thickness. Age is Early Pennsylvanian (Pottsville).
Named from exposures along incline on north side of Indian Fork, Fork Mountain quadrangle, Anderson Co., eastern TN.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1863).
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 ([ ]).