146 
Fic. 3.—Diagrammatic sketch of panorama shown in Fig. 4, illustrating the unconformable contact between the Meganos and 
oO 
The beds, as shown in the view, are dipping into the hill at an angle of close to 30°. 
the Tejon. 
BRUCE CLARK 
Tejon might be referable to this newly recog- 
nized series and, if so, how much of the fauna, 
previously considered Tejon, belonged in 
reality to this other division. 
The higher mountains immediately south 
of the San Joaquin Valley, the rocks of which 
are principally granites and older meta- 
morphics, connect the Sierra Nevadas with 
the eastern Coast ranges. The hills imme- 
diately north of the granitic area and border- 
ing the southern end of the valley are of 
Tertiary sediments, together with a minor 
amount of volcanic rock. The oldest un- 
metamorphosed sediments in this general 
section are of Eocene age, the outcrops of 
which may be traced in a narrow belt around 
the southern end of the valley for a distance 
of more than thirty miles. ‘These Eocene 
beds rest on the granites and are overlain 
unconformably by beds of Oligocene or Lower 
Miocene age. The Tertiaries in this region 
have been folded and faulted and the beds as 
a rule dip at a high angle; in fact, in some 
localities the beds are overturned to the north, 
toward the valley, and the sequence is com- 
plicated by thrusting. This, however, is not 
true of the Eocene strata which border the 
granites. Here, along a narrow east-west belt 
for a distance of more than twenty miles, is 
found a normal section. The type section of 
the Tejon, in Grape Vine Canyon (the Spanish 
name is Canada de las Uvas) about thirty 
miles due south of Bakersfield, comies within 
this belt. 
During the summer of 1919, ten days were 
spent in mapping and studying these Eocene 
rocks. While much more work remains to be 
