ABSTRACT 



During the summer and early fall of 1959, bottom sediment 

 samples were collected and Sonoprobe records were obtained 

 as a part of an inshore survey in Penobscot Bay, Maine. 



The Sonoprobe is described, its operation is explained, and its 

 capabilities are discussed. 



In the investigation of the bottom and subbottom of Penobscot 

 Bay, Maine, the geographic setting and bathymetry of the area 

 are described, and the geologic history of the region and the 

 previous work done in the area are reviewed. 



Survey observations are discussed and bottom sediment and 

 Sonoprobe data are presented. 



Sediment data are compared and correlated with Sonoprobe 

 records that were obtained over the bottom sample station 

 locations. 



Grain-size analyses were imade on 168 bottom samples and 

 approximately 70 miles of Sonoprobe runs were recorded. 



