IV. SURVEY RESULTS AND ANALYSIS 



A. General 



As a result of this survey, detailed geomagnetic data of the 

 Abyssal Seamounts of the New England Seamount Chain now are available 

 for geophysical analysis. The magnetic total intensity contours are 

 shown in Figures 2 and 4; the bathymetric contours are shown in 

 Figures 3 and 5. In general, a close correlation exists between 

 the magnetic and bathymetric features. A description of these 

 features and an analysis of the data follow. 



B. Description of Features 



1. Survey Area A. The Kelvin Group, referred to as a "Tri- 

 peaked Bank" by Northrup, et al, 1962, appears as four separate 

 features. Separating these seamounts are abyssal depths exceeding 

 2600 fathoms. The magnetic contours (Fig. 2) correlate closely 

 with the bathymetric contours (Fig. 3). Each seamount, with one 

 exception, has at least two peaks or is elongate in shape. The 

 exception is a seamount, unknown prior to this survey, located at 

 38°25' North, 62 11' West. Additional lines were run to delineate 

 its shape. A minor bathymetric feature of 200 fathoms relief is 

 located at approximately 38°29 ' North, 62°33' West. Track spacing 

 was not close enough to detail the shape of the feature. A broad 

 50 gamma magnetic "high" corresponds with this bathymetric peak. 



2. Survey Area B . Area B covers San Pablo and Manning Sea- 

 mounts. San Pablo Seamount is a twin-peaked feature with an asso- 

 ciated twin magnetic anomaly. Manning Seamount has at least five 

 separate peaks with a corresponding complex magnetic anomaly. 



