USGS Home
Contact USGS
Search USGS

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 7/8 Geography Sector-Specific Studies Geologic Highlights Boca Chica Key, Key West, Fleming Key, and Urbanization Middle Sambo, Western Sambo, and Eastern Dry Rocks Rock Key and Sand Key Reefs Margin Evolution Flooding the Florida Shelf Addendum Ephemeral Islands and Lighthouses Middle Sambo, Western Sambo, and Eastern Dry Rocks: Middle Sambo, Western Sambo, and Eastern Dry Rocks are Holocene reefs located along the shelf edge between reefs at Eastern Sambo and Eastern Dry Rocks (Fig. 97C). A single outlier reef occurs along the seaward edge of the upper-slope terrace off Eastern and Western Sambos, and presumably Middle Sambo as well, but did not develop beyond a reef-flat-like structure off Eastern Dry Rocks (Fig. 89, lines 2, 1, and 15). The multiple tracts of outlier reefs developed west of Eastern Dry Rocks (Fig. 89). continue to: Rock Key and Sand Key Reefs

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