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The AAPG/Datapages Combined Publications Database

GCAGS Transactions


Gulf Coast Association of Geological Societies Transactions
Vol. 19 (1969), Pages 189-193

Geothermal Gradients in Florida and Southern Georgia

G. M. Griffin, P. A. Tedrick, D. A. Reel, J. P. Manker


Bottom hole temperatures from electric log surveys were collected from all non-confidential oil tests that recorded temperature data. These data include points from 287 wells in Florida and 33 in Georgia. Computed gradients were compiled into county averages, and a preliminary geothermal gradient map was drawn.

Peninsular Florida, south of a NE-SW trending zone through Taylor and Nassau Counties, is characterized by gradients generally less than 1.0 degree (F)/100 feet. Northern Florida and southern Georgia are characterized by gradients that generally exceed 1.0 degree (F)/100 feet. A weak and questionable increase in gradient may occur over the Sunniland Field in southwest Florida.

The observed NE-SW geothermal trend parallels the Appalachian Mountain belt and coincides with known magnetic and gravity features of the area. It also parallels the migrating Cretaceous to Recent clastic-nonclastic boundary in northern Florida.

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