U. S. GEOLOGICAL SURVEY 



BULLETIN 614 PLATE XXXIII 



A. THE ARCHES. STANFORD UNIVERSITY. CAL. 

 The displacement of the capitals of the small columns supporting the arches is an effect of the earthquake of 1 906, 



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£. FURROW A MILE NORTHWEST OF OLEMA. CAL, MADE BY THE MOVEMENT WHICH 



CAUSED THE EARTHQUAKE OF 1906. 



On the left is the rift valley, which extends from Bolinas Lagoon to Tomales Bay and is a result partly of 



earlier movements, partly of erosion along a zone of crushed rocks. 



