- Usage in publication:
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- Low Gap 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. 11, 19, pl. 2. Low Gap sandstone of Cross Mountain group. Massive sandstone 45 to 70 feet thick. Overlies unnamed shale interval 35 to 140 feet thick that contains Grassy Spring coal; underlies shale interval 110 to 200 feet thick that contains the Cold Gap and Wild Cat coals and in turn underlies Tub Springs sandstone (new). Age is Early Pennsylvanian (Pottsville).
Type locality: same as Cross Mountain group, which is on road leading to top of Cross Mountain, Lake City quadrangle, Anderson Co., eastern TN. Named from exposures in Low Gap on crest of Redoak Mountain between Graves Gap and Cross Mountain.
Source: US geologic names lexicon (USGS Bull. 1200, p. 2265).
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 ([ ]).