COAST LINE LOS ANGELES TO SAN FKANCISCC. 105 



skirts one of these on the right, and the deep gnlHes expose the sand 

 and gravel on its outer edge. Remnants of the same terraces, some 



them 



mouth 



r 20 milos to the 

 That these ter- 



races mark the positions of okl sea beaches is known to the geologist 

 not only from their form but from other more convincing evidence. 

 Along the beaches of the present day live clamlikc mollusks (Pholas) 

 which by turning romid and round and using their shells as a sort of 

 auger, bore for themselves holes in the rock in which they live. Holes 

 unmistakably formed in this way can be found along the inner edges 

 of some of the terraces that are now hundreds of feet above the ocean. 

 Moreover, the gravels that lie on the terraces contain many species of 

 marine shells. 



Rincon Mtn 



Elevated 

 sea beach 



Cliff of Ternando 



formation 



RAlD?QAD ^' 



ferr^o'^^° 



FiGUBE 14.-Generalized cross section from the Pacific Ocean to Rincon Mountain, Cal.,showing apparent 



relations of the formations. 



For 2 or 3 miles west of Ventura the road lies on a low terrace about 

 40 feet above the waves. Just beyond milepost 394, on the right, is 

 a prominent hill that was formed suddenly about 40 years ago by a 

 landslide that buried the stage road. 



hills 



„..,. _ ,.ones of the Fernando formation, dippmg westward at an 



angle of about 45°. Toward the northwest the shore Ime cuts lower 

 and lower into the formation, exposing soft sandstones and sandy shales. 

 Beyond Los Sauces Creek (sow'ses, Spanish for the willows), having 

 crossed the anticline referred toonpagc 104, the traveler come^ atnule- 

 post 3SS to bold bluffs of the Fernando beds, winch dip to the north- 

 east and are overlam by the horizontal Pleistocene beds of an uplifted 

 marine terrace. A generalized cross section from the shore to Kincon 

 Mountain (fig. 14) illustrates the apparent relations of the formations 



in this reorion. , • ^r . -n- 



At a point 12 miles northwest of the mouth of Ventura Eiver, 

 near milepost 3S5, between Seacliff and Rincon Pomt (Benham), 



