TITLES AND ABSTRACTS O^ PAPERS 123 



An invitation to the members of the Cordilleran Section to attend an 

 informal reception at the home of President and Mrs. Wheeler from 4.30 

 to 5.30 was read by the Secretary. The meeting, therefore, adjourned 

 at 4.30. 



ANNUAL DINNER 



The annnal dinner was held in conjunction with the Le Conte Geo- 

 logical Clnb and the Pacific Coast Section of the Paleontological Society 

 at the Faculty Club at 7 p. m. Friday. After the dinner the question of 

 meeting place for 1914 was discussed, as a session in the Northwest had 

 been proposed. The meeting voted its approval of Seattle, Washington, 

 provided the Pacific Association decided to meet there. 



The following paper was then read and very generally discussed : 



GEOLOGY OF THE SOUTHERN END OF THE SAN JOAQUIN VALLEY 

 BY G. C. GESTEB 



(Abstract) 



The topography of this region is largely the result of an Intense folding and 

 faulting accompanied by torrential erosion, commonly found in the semi-arid 

 regions. There is some evidence to offer that this part of the southern San 

 Joaquin is slowly rising. Lying upon a series of granites, schists, etcetera, 

 which are a direct continuation of similar rocks exposed in the Sierra Nevada, 

 are a series of Tertiary sediments and volcanics. The sediments are a direct 

 continuation of the formations exposed in the Midway Sunset district. The 

 sedimentation becomes generally coarser toward the south and east. An ex- 

 tensive series of volcanics is found associated with sediments of Lower Miocene 

 age. 



Presented from notes and illustrated by a geologic map. 



Session of Saturday, April 12, 1913 



The meeting was called to order in room 105, Bacon Hall, at 9.45, by 

 the temporary chairman, who, being obliged to attend a committee meet- 

 ing, yielded the chair to Prof. A. S. Eakle. 



The following papers were presented : 



PHYSIOGRAPHIC FEATURES OF THE HAYWABDS RIFT 

 BY DAVID M. DURST 



(Abstract) 

 Described the location of the rift line and the characteristic topography. 

 Illustrated by map. Discussion by Wilcox, Louderback, and Weber. 



