A gravity profile from La Belle, Hendry County, to Miles City, Collier County, reveals positive anomalies at Felda and Sunniland fields--the only two fields where oil now is produced in Florida.

Sunniland field is probably a compactional anticline, with approximately 80 ft of closure and 180 ft of structural relief. The gravity anomaly overlying it is about 20 gravity units. Felda field is probably a hydrodynamic trap over a nose. Structural relief of the nose is approximately 50 ft.

Poor results which have reportedly been obtained by seismic surveys in the South Florida basin indicate gravity may be the more reliable indirect method currently available for use in the area.

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