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Systematic Mapping of Bedrock and Habitats along the Florida Reef Tract—Central Key Largo to Halfmoon Shoal (Gulf of Mexico)

USGS Professional Paper 1751

by Barbara H. Lidz, Christopher D. Reich, and Eugene A. Shinn

Introduction: Table of Contents Project Overview Project Objective Geologic Setting Primary Datasets Primary Products - Overview Maps & Evolution Overview: Introduction Depth to Pleistocene Bedrock Surface Reef & Sediment Thickness Benthic Ecosystems & Environments Sedimentary Grains in 1989 Summary Illustration Index Map Evolution Overview Tile-by-Tile Analysis Organization of Report Tiles: 1, 2, 3, 4, 5, 6, 7/8, 9/10, 11 Summary Acknowledg- ments References Disclaimer Related Publications

Tile 1 Geography Sector-Specific Studies Geologic Highlights Rodriguez Key Sinkhole Captain Roy's Reef Grecian Rocks Key Largo Dry Rocks Mosquito Bank, White Bank, Coral-Rock Ridges, and French Reef Carysfort Reef The Elbow Molasses Reef and Little Molasses Island Pickles Reef Captain Roy's Reef: Captain Roy's Reef is located on White Bank between and slightly west of the sinkhole and coral reefs at Grecian Rocks (Fig. 22B; see Benthic Ecosystems for Tile 1). The reef consists of three of the largest Montastrea annularis corals (23-m circumference) in the Florida Keys National Marine Sanctuary. The reef was named in 2003 for Captain Roy J. Gaensslen (1924-1997), who made lifelong contributions to understanding and protection of the Florida Keys marine environment. continue to: Grecian Rocks

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