ABSTRACT 



In July 1961, a survey of the total intensity of the geomagnetic 

 field of an irregularly shaped area lying between latitudes 

 35° N and 40° N and longitudes 70° W and 76° W was con- 

 ducted. The survey operations were conducted aboard the 

 USS PREVAIL (AGS-20) utilizing a nuclear resonance mag- 

 netometer. This report describes the geomagnetic character 

 of an extensive offshore area and its relation to bathymetric 

 and available seismic data. The geological significance of 

 some of the data, particularly an elongate anomaly occurring 

 along the continental slope, is discussed. 



