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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 11 Geography Geologic Highlights The Marquesas-Quicksands Ridge Ellis Rock and New Ground Shoal Halfmoon Shoal Rebecca Shoal The Quicksands Rebecca Shoal: Rebecca Shoal is a small shoal-rock area located on the northwest side of the unnamed channel and southwest of New Ground Shoal (Fig. 117). The shoal may represent an old patch reef, but no studies have been devoted to determining its origin, composition, or age. continue to: The Quicksands

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