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Figure 107. Schematic cross sections of outlier reefs derived from seismic and core data (modified from Toscano and Lundberg, 1998; landward direction is to left; Straits of Florida are to right). Non-asterisked Pleistocene ages are from Toscano (1996). (A) Cross section of the primary outlier off Sand Key Reef (lower Keys) shows comparatively thin discontinuous Holocene accretions on top of ~80-kacorals. (B) Cross section of the Carysfort outlier reef (upper Keys) shows generally thicker and more extensive Holocene accumulation on top of ~80-ka corals. Coral ages from both sites indicate reef growth ended in the mid-Holocene but not at the same time. The Carysfort corals are ~2 ka younger than the Sand Key corals. VE = vertical exaggeration.

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Coastal & Marine Geology Program > Center for Coastal & Watershed Studies > Professional Paper 1751