CONTENTS 



Page 



I. INTRODUCTION 1 



II . THE SONOPROBE 1 



A. General 1 



B. Instrument Operation 1 



C. Instrument Capabilities and Recordings 3 



III. THE SURVEY AREA: PENOBSCOT BAY, MAINE 



A. Geographic Setting 4 



B. Bathymetry 5 



C. Geologic Setting and Previous Work in the Area 5 



IV. SURVEY OBSERVATIONS 



A. Oceanographic Observations 8 



B. Bottom Sampling 9 



C . Sonoprobe Runs 9 



V. ANALYSIS OF SURVEY DATA 



A. Sediments of Penobscot Bay 30 



B. Sediment-Sonoprobe Correlation 35 



C. Interpretation of Subbottom Records 



1 . General 41 



2 . Sonoprobe Runs 43 



a . Run I 43 



b. Run II 44 



c. Runs VII, VIII, and IX 44 



d. Runs III, IV, V, and VI 45 



e. Run XI 45 



VI. CONCLUSIONS 45 



REFERENCES 51 



PLATES 



PLATE I . Sonoprobe Deck Units 2 



PLATE II. Hard Clay Samples 36 



APPENDIX 



List of All Bottom Sediment Stations Taken During 1959 Penobscot Bay 



Survey 54 



Bottom Sediment Analysis Sheets 58 



