282 CALIFORNIA ACADEMY OF SCIENCES. 



the general uplift post-Miocene with many local move- 

 ments since Pliocene, the Miocene and Pliocene being 

 conformable in some places, in others unconformable. 



Becker. — In 1888, Dr. Becker.* in his report on the 

 " Quicksilver Deposits of the Pacific Slope," also makes 

 the metamorphic rocks Cretaceous, but thinks the lime- 

 stone is the lowest member and probably older. He thinks 

 the first upheaval took place in lower Cretaceous. The 

 cherts before mentioned he calls phthanites and argues 

 that the serpentine is derived from sandstone. 



Cooper. — In the Seventh Annual Report of the State 

 Mineralogist, Dr. J. G. Cooper t gives a list of the fossils 

 of California with their geographical and geological range. 

 This is a good index of the ages to which some of the 

 more fossiliferous horizons were assigned at that time and 

 practically up to the present. The following ages are 

 given to some of the beds to be discussed later. The 

 horizontal beds from Santa Barbara to San Diego are all 

 called Quaternary. The beds of Seven Mile Beach and 

 their continuation to the southeast are called Pliocene. 

 The fossiliferous beds along the coast from Half Moon 

 Bay to Soquel are generally called Pliocene, but in a few 

 places are referred to as Miocene. 



Fairbanks. — Mr. Harold W. Fairbanks \ argues for the 

 pre-Cretaceous age of the metamorphic rocks and makes 

 the early upheaval post-Jurassic. He mentions the in- 

 trusion of granite into the metamorphics of the Gavilan 

 Range. 



Lawson. — In the Geology of Carmelo Bay, Prof. Law- 



* U. S. Geological Survey, Monograph xiii, 1888. 



t Cal. State Mining Bureau, Seventh Annual Keport of the State Miner- 

 alogist, 1888, pp. 223 et seq. 



X American Geologist, vol. ix. Mar. 1892, p. 133. 



