96 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SER. 
large as to suggest glacial or other unusual conditions during 
sedimentation. . 
There is quite generally the appearance of stratigraphic 
continuity in the Neocene series, and at any one point it 1s 
not easy to detect any angular divergence in dip or strike 
between the Kern River and Temblor groups. When followed 
along the strike, however, there is conclusive evidence of 
overlapping and of unconformity between the two groups. 
Just south of the Kern River, and also near White River, 
the Kern River group rests upon and covers in turn different 
members of the older group, and finally rests directly upon 
the granite. The same is probably true to the north of the 
Tejon valley. 
Special importance is attached to the stratigraphy and distri- 
bution of this group from the fact that the productive oil- 
measures of the Kern River district are confined to it. From 
this fact it has been called the Kern River group. The oil- 
measures make up about one-half of the stratigraphic volume 
of the beds. 
Very little oil, and probably no oil in commercial quantities, 
has been found in the Kern River field below the base of this 
group, though small quantities of oil and gas are often 
reported. Bituminous matter in small quantities has often 
been seen in some of the outcrops of the older group, but as 
indications of oil deposits they are generally negligible. 
The age of the Kern River group is not readily told, except 
that it is younger than the Temblor, with which it is certainly 
unconformable, as already stated. 
The only fossil remains that have yet been discovered in it 
are fragments of petrified wood, but aside from suggesting 
fresh water conditions, or perhaps those of shallow water, 
they are of little value. 
The oil-measures furnish a sort of evidence, which is perhaps 
stronger than a suggestion, that the group should be correlated 
with the petroliferous beds at Sunset, Midway and McKit- 
trick, but this topic will be deferred for the present. 
QUATERNARY DEPOSITS 
Overlying all of the older formations of the lower Kern 
River region, including the basement rocks and the Neocene, 
