Crandall — Santa Clara Y alley Region in California. 51 



the end of Knoxville time a movement took place which lifted 

 southern California out of water, and. submerged a greater area 

 of northern California, allowing the transgression of Horsetown 

 beyond the eastern limits of the Knoxville sea. The sections 

 given here (fig. 2) show the relations of the three Cretaceous 

 horizons in northern, central and southern California. 



Section I is plotted with uniform dips from Dr. Diller sec- 

 tion on Elder Creek.* 



Section II is from Mr. Turner's work at Mt. Diablo, and. 

 shows a conformable series.f 



Sections III and IV axe from field work at Arroyo del Yalle, 

 and show the conformable relations of the Cretaceous series, 

 and the position of the Jordan ranch beds, from which the 

 mingled Horsetown and Chico fauna was taken. 



Section V is from work done by Dr. Fairbanks in southern 

 California.^: 



An outline map is given below to show, diagrammatically, the 

 relations between the various Cretaceous horizons in California. 



The Chico shore line is taken from a map of Diller and 

 Stanton.§ The Horsetown shore line is partly from this same 

 map, and partly from the known distribution of that horizon 

 in this immediate region. 



The Knoxville shore line is drawn in from the localities at 

 which this horizon is recognized in the region under discussion, 

 and the occurrence of the same horizon farther south at Mt. 

 Pinos,|| and further north of this immediate region or ISTapa 

 County. 



The overlap of Horsetown upon Knoxville, and Chico upon 

 Horsetown in northern California, as demonstrated by Diller 

 and Stanton, is shown here.^f The lack of Horsetown, and un- 

 conformity of Chico upon Knoxville in southern California, is 

 also shown. The point where Horsetown deposits stop, or the 

 approximate location of the axis of differential movement of 

 Horsetown times, which raised southern California and sub- 

 merged a greater area of northern California, is indicated. 



Movements during the Cretaceous. — At the beginning of 

 Knoxville there was an epeirogenic movement that extended 

 from Alaska to southern California, which was a non-uniform 



* Diller and Stanton, The Shasta-Chico Series, Ball. G-eol. Soc. Ana., v, 

 438. 



fGeol. of Mt. Diablo, Bull. Geol. Soc. Am., ii, 400. 



JH. W. "Fairbanks, Geology of Northern Ventura Co., Santa Barbara Co. 

 etc., Eeprint 12th Ann. Eep. State Mineralogist, 1894, p. 2. 



§ The Shasta-Chico Series, Bull. Geol. Soc. Am. , v, 454. 



I H. W. Fairbanks, Geol. of Northern Ventura Co., etc., 12th Ann. Rep. 

 State Mineralogist, 1894, Reprint, p. 20. 



■fj" Diller and Stanton, The Shasta-Chico Series, Bull. Geol. Soc. Am., v, 

 450. 



