Submarine Canyons 



41 



Cstalioa Island Palas Vcrdes Hills 



-SEA uevEi_ 



San Pedro Basin 



X-ROCK 

 O-SEOIMEMT 



STATUTE MILE 



Vertical Eialgtration — 5 Times 



Figure 41. Composition and character of several basin slopes. Note that, although all these slopes are irregular, only 

 one is immediately underlain by rocky bottom, and this one happens to be the gentlest slope. From Emery and Terry 

 (1956, Fig. 7). 



Figure 42. Photograph of upper part of basin slope off Palos Verdes Hills (lat. 33°41.1', long. 118°20.3', 957 feet). 

 Camera is facing nearly parallel to slope and tilting 10° downward: the slope, thus, is at least 18° steep. Cores show 

 the slope to be covered with a blanket of mud more than 1 8 feet thick. White hght-scattering objects at left are small 

 bathypelagic animals or grains of sediment— they are very commonly present near the bottom. (AHF 2102.) 



