154 University of California Publications in Geology [Vol. 8 



1586. Mount Diablo Quadrangle. Martinez Group. South part of Sec. 8, K. 1 E, 



T. 1 N, Mount Diablo B. L. and M. 

 1592. Mount Diablo Quadrangle. Martinez Group. SW cor. Sec. 8, E 1 E, 



T. 1 N, Mount Diablo B. L. and M. 

 1695. Mount Diablo Quadrangle. Martinez Group. On hilltop west of point 



where basal Tejon conglomerate crosses creek. Sec. 14, R. 1 E, T. 1 N, 



Mount Diablo B. L. and M. 

 1743. Mount Diablo Quadrangle. Martinez Group. One and one-half miles 



south of Somerville. Elevation, 950 feet and about twenty feet strati- 



graphically above the Martinez-Chico contact, in the same zone as 



1556. NE cor. of Sec. 16, T. 1 N, R. 1 E, Mount Diablo B. L. and M. 



1745. Mount Diablo Quadrangle. Martinez Group. One and one-half miles 



south of Somerville. Elevation, 900 feet, seventy-five feet strati- 

 graphically above the Martinez-Chico contact. Sec. 16, T. 1 N, B. 1 E, 

 Mount Diablo B. L. and M. 



1746. Mount Diablo Quadrangle. (R. E. D. Loc. 506.) Martinez Group. About 



two and one-fourth miles east of Clayton. Elevation, 1450 feet. 

 About 300 feet stratigraphically above the Martinez-Chico contact. 

 SW cor. of Sec. 8, T. 1 N, R, 1 E, Mount Diablo B. L. and M. 



1747. Mount Diablo Quadrangle. (B. E. D. Loc. 507.) Martinez Group. Four 



miles due east of Clayton. Elevation, 900 feet. About 400 feet strati- 

 graphically above the Martinez-Chico contact in the same strata as 

 1540. SE cor. of Sec. 9, T. 1 N, R. 1 W, Mount Diablo B. L. and M. 



1828. Concord Quadrangle. Martinez Group. On southwest side of Martinez- 



Walnut Creek road two and one-fourth miles southeast of Muir Station 

 on hill slope. Elevation, 400 feet. Waud and Dickerson. 



1829. Concord Quadrangle. Martinez Group. On southwest side of Martinez- 



Walnut Creek road two and three-eighths miles southeast of Muir 

 Station. Elevation, 475 feet. Waud and Dickerson. 



1830. Santa Cruz Quadrangle. San Mateo County between the head waters of 



San Lorenzo River and Pescadero Creek. See map 47. Dickerson. 

 1888. Napa Quadrangle. Martinez Group. On road 75 feet above the railroad 



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