54 



CRANDALL— SAN FRANCISCO PENINSULA. 



[January 4, 



brick chimneys were not thrown down, though some of them were 

 cracked. These are within a very short distance of the San Bruno 

 fault zone, and had there been any movement along that fault the 

 intensity at South San Francisco would have been much greater. 



The beds of the Merced series near and north of Mussel Rock 

 are cracked, fissured and faulted in every direction. The Pliocene 

 section along Seven Mile beach has been so altered by landslides 



Fig. 23. 



Effect of the earthquake along the road bed of the Ocean Shore Railway; 

 three miles north of Mussel Rock. 



that it is hardly to be recognized. There is a tendency here for 

 everything to slide into the ocean, even as far as four or five hun- 

 dred feet from the cliff's edge. The road bed of the Ocean Shore 

 electric railway line was seriously damaged along this blufif. 

 Through Wood's Gulch and southeast of there along the fault line, 

 landslides occur on both sides of the canyon, and long cracks cut 

 across the hills just above the Chinese cemetery, showing that this 

 fault is directly related to the main fault and probably formed at 



