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publications > circular > circular 314 > geology > general features


Geology

Introduction
Topo-Eco Divisions
>Geology
> General Features
- Miocene Deposits
- Pliocene Deposits
- Pleistocene Deposits
- Recent Deposits
- Structural Interpret.
- Ground-Water Occurrence
- Correlation Studies
References
PDF version

General Features

The materials penetrated by the test wells range in age from late Miocene through Recent; the oldest formation is the Tamiami formation of late Miocene age. Organic soils are still being formed in parts of the Everglades area. The Miami oolite of Pleistocene age occurs as a thin discontinuous veneer near the south end of the line but apparently was not penetrated by any of the wells. The late Miocene to Recent geologic formations in the area of the report are listed in the table below.

Formations Penetrated by Test Wells
Age Formations Thickness
(feet)
Character
Recent and Pleistocene Organic soils and Lake Flirt marl. 0 - 9 Undifferentiated peat, muck, and fresh-water marl.
Pleistocene Pamlico sand (shore at +25 feet). 0 - 9 Gray to brown sand.
Fort Thompson formation. 3 - 9 Alternating marine and fresh-water limestone and marl.
Anastasia formation. 0 - 25? Marine sand, coquina, and sandy limestone.
Pliocene Caloosahatchee marl. 0 - 20 Shells, sand, and marl.
Miocene (late) Tamiami formation. 50 - 100 Silty sand and marl.

< Previous: Topographic-Ecologic Divisions | Next: Miocene Deposits >



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Last updated: 28 October, 2004 @ 01:30 PM(KP)