- Usage in publication:
-
- Twelve Mile Member*
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- Dolomite
- AAPG geologic province:
-
- South Florida province
Summary:
Twelve Mile Member, middle member of Lehigh Acres Formation (new) of Glades Group. Consists of cream to brown, micritic, or oolitic limestone beds overlain by the "brown dolomite" zone, a fine-grained, porous, brown dolomite about 75 feet thick, in the lower part, and gray argillaceous limestone in the upper part. Thickness is 300 feet in type well. Overlies West Felda Shale Member (new) and underlies Able Member (new), both of Lehigh Acres. Age is Early Cretaceous (earliest Comanchean).
Type section (subsurface): depth-interval 12,460 to 12,760 ft, Humble Oil and Refining Company No. 1 Lehigh Acres well P-407, in sec. 14, T. 45 S., R. 27 E., Lee Co., FL. Named from the Twelve Mile Slough.
Source: Modified from 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 ([ ]).