f 
BULLETIN NO.309 PL.X 
THE PUENTE HILLS, CALIFORNIA 
1 ' * A 4 A ' ' 1 A_ 
Scale 626oo 
p IcilometeT's 
miles 
Contour interval 20 
smean-i 
19 06. 
Datum ismean sea level 
U.S. GEOLOGICAL SURVEY 
CHARLES D. WALCOTT, DIRECTOR 
Topography by U 5 Geological Survey, 
GEOLOGIC 
Geology by George H.EIdndge -1902 
LEG END 
Gravel 
i 
Fernando 
Diabase 
Strike and dip 
Axis of syncliite 
▲ 
~r 
Axis of anticline 
PUENTE FORMATION 
