- Usage in publication:
-
- Island Hill formation
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Black Warrior basin
Morse, W.C., 1928, Paleozoic rocks of Mississippi: Journal of Geology, v. 36, no. 1, p. 31-43.
Summary:
Island Hill formation, named for isolated hill on Yellow Creek, consists of a few layers of more or less cherty and siliceous fossiliferous limestone with a thin basal limestone conglomerate. Thickness 3 ft. Assigned to Oriskanian series. Unconformably underlies Whetstone Branch shale and overlies New Scotland limestone. Unit is largely confined to its type locality in Tishomingo Co. Age is Early Devonian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Island Hill
- Modifications:
-
- Not used
- AAPG geologic province:
-
- Black Warrior basin
Summary:
Island Hill Formation not used. Ross Formation of this report includes New Scotland and Island Hill Formations of Morse (1928) and all strata above Decatur Limestone and below Flat Gap Limestone as well as a member of the Ross of Wilson (1949).
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 ([ ]).