CABLE BREAKS AND SEDIMENT CORES LOCATED ON TOPOGRAPHIC PROFILE SOUTH OF CABOT STRAIT 



NORTHWEST 



NAUTICAL MILES 



Fig. 1. Cable breaks and sediment cores located on the topographic profile south of the 

 Cabot Strait, with superimposed graph of velocity of the Grand Banks turbidity 

 current. (After Heezen and Ewing, 1952.) 



EXPLANATION 



• •• 



PISTON CORE STATIONS 

 ATLANTIS CRUISE A 180 



SUBMARINE TELEGRAPH 

 CABLES 





AREA OF SLIDES AND 

 SLUMPS NEAR EPICENTER 



AREA TRAVELLED BY 

 DESTRUCTIVE TURBIDITY 

 CURRENT. CABLES BROKEN 

 AND REMOVED 



MARGINAL AREA OF 

 WEAKER CURRENT. CABLES 

 BURIED BUT NOT BROKEN 



+ + + 

 100 FATHOM CONTOUR 



ABYSSAL PLAIN 



HILLS AND MOUNTAINS. 

 BERMUDA RISE, WESTERN 

 FOOTHILLS OF THE 

 MID-ATLANTIC RIDGE 



Fig. 2. Map of the 1929 Grand Banks turbidity current. (After Heezen, Ericson and 

 Ewing, 1954.) 



