Rattlesnake Hammock Formation of Ocean Reef Group named in Collier Co., southeastern FL. Consists of thick, dense limestone at base and thick, regionally persistent anhydrite at top. Also contains dolomite. Unit is 225 m thick in type well. Overlies Lake Trafford Formation of Ocean Reef Group and underlies Marco Junction Formation of Big Cypress Group. Age is Early Cretaceous (Comanchean).
Source: GNU records (USGS DDS-6; Reston GNULEX).
Early Cretaceous Rattlesnake Hammock Formation of Ocean Reef Group used following Faulkner and Applegate (1986, Gulf Coast Association of Geological Societies Transactions, v. 36, p. 83-96) and Lloyd (1991, Florida Geological Survey Information Circular 107, p. 1-62).
Source: GNU records (USGS DDS-6; Reston GNULEX).
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