A-16 



south flank of the canyon head. The head of Toms Canyon has 

 sandy sediment with shell fragments throughout the 150 to 

 350-meter depth range. Hudson Canyon consists mainly of a 

 silty sediment, with minor consolidated clay outcrops 

 throughout its axis. In the deeper part of Hudson Canyon 

 (2900-3000 m) substantial outcrops were seen. 



The continental slope between Hudson Canyon and 

 Georges Bank is characterized by silty substrate between 

 1250 and 1400 meters. From 1700 to 2250 meters the sediment 

 is also silty, with minor consolidated clay outcrops through- 

 out this depth interval. 



The head of Veatch Canyon consists of sandy sediment 

 between the depths of 100 to 250 meters. Major consolidated 

 clay outcrops were seen between 150 and 200 meters in this 

 canyon. The head of Lydonia Canyon (150-400 m) offers a 

 slightly more heterogeneous habitat. It has a predominantly 

 sandy substrate interspersed with gravel, cobbles and glacial 

 erratics. Large ripple marks were also observed indicating 

 strong current activity. 



The northern canyons offer the most heterogeneous 

 environment in terms of substrate variability. The wall of 

 Oceanographer Canyon consists of silty sediment with some 

 sandy areas between 900 and 1200 meters. Consolidated clay, 

 cobbles, glacial erratics and extensive coral rubble were 

 found between 700 and 1350 meters, while outcrop was seen at 

 1050 and 1400 meters. The axis of Oceanographer Canyon 



