STUDIES IN THE NEOCENE OF CALIFORNIA: 
CONTENTS. 
I. The Tertiary Stratigraphy of the Santa Cruz Mountains. 
Introduction. 
General Geology. 
Stratigraphy. 
Columnar Section of the Santa Cruz Mountains. 
Metamorphics. 
Pescadero Series. 
Monterey-Merced Period. 
Monterey Series. 
Merced Series. 
Dynamic Movements during the Tertiary. 
I]. The Pleistocene History of San Francisco Peninsula. 
Topography. 
Deposits. 
History. 
Ill. The Age of the Coast Ranges. 
IV. On the Recent History of Santa Catalina Island. 
INTRODUCTION. 
THE Santa Cruz Mountains, one of the Coast Ranges, lie just 
south of the city of San Francisco, and occupy a region about 
sixty-five miles long by twenty-five wide as a maximum. The 
whole region is an intricate series of ridges and narrow, deep 
valleys. The highest points rise nearly 4000 feet. The main 
axis has a northwest and southeast trend, and as the coast here 
lies nearly north and south, the ocean has cut a diagonal cross- 
section of its northern end, giving an excellent opportunity for 
the study of its history. 
GENERAL GEOLOGY. 
All around the edge of the mountains are nearly level plains 
formed partly by erosion, partly by the deposition of horizontal, 
unconsolidated Quaternary deposits. 
‘Abstract of a paper presented at Leland Stanford Junior University for the 
degree of Doctor of Philosophy. 
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