Number2--BATHYMETRY, SIDESCAN SONAR IMAGE, AND SURFICIAL GEOLOGICAL INTERPTRETATION OF LONG ISLAND SOUND OFF NORWALK, CONNECTICUT

Survey Number 2--BATHYMETRY, SIDESCAN SONAR IMAGE, AND SURFICIAL GEOLOGIC INTERPRETATION OF LONG ISLAND SOUND OFF NORWALK, CONNECTICUT

David C. Twichell¹, Roman N. Zajac², Lawrence J. Poppe¹, Ralph S. Lewis³,
VeeAnn Cross¹, David Nichols¹, and Mary L. DiGiacomo-Cohen³

^{1US Geological Survey, Woods Hole, MA 02543

²Department of Biology, University of New Haven,300 Orange Ave.

West Haven, CT 06516

³Long Island Sound Resource Center, Connecticut Geological and Natural History

Survey,

Department of Environmental Protection, 1084 Shennecossett Road, Avery Point, Groton, CT

06340

TABLE OF CONTENTS

INTRODUCTION

GEOLOGIC SETTING

DATA COLLECTION

DATA PROCESSING

GEOLOGIC INTERPRETATION

Bathymetry

Near-Surface Seismic Facies and Stratigraphy

Sidescan Sonar Mosaic and Surficial Geologic Interpretation

Surficial Sediment Distribution

CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES CITED

FIGURE CAPTIONS

SIDESCAN-SONAR MOSAIC

U.S. Department of the Interior, U.S. Geological Survey

URL: http://pubs.usgs.gov/of/1998/of98-502/chapt2/2norwalk/frontp2.htm

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