FLORIDA GEOLOGICAL SURVEY


 Vernon (1951), utilizing aerial photographs, mapped fracture patterns throughout
northern peninsular Florida. Regionally, these fractures generally trend parallel to the axis of the
Ocala Platform in a northwest-southeast orientation. A secondary system of fractures intersects
these primary fractures at high angles in a northeast-southwest trend (Vernon, 1951). Orientation
of stream meanders along portions of the Wacissa and Aucilla Rivers suggests that these fracture
patterns may be a controlling factor in stream location (Yon, 1966).


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/ SOUTH EAST GEORGIA
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D IOFMS 99 Map Area Boundary


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Figure 3. Principal subsurface structures of north Florida (modified from Puri and
Vernon, 1964, and Schmidt, 1984).