Vou. 111] ANDERSON—NEOCENE DEPOSITS OF KERN RIVER 119 
The Monterey group is either absent from the column, or if 
present, cannot be separated from the Temblor. 
An epoch of disturbance following the deposition of the 
Temblor group is indicated by the faulting of the beds, which 
has left some of them at a considerable altitude and quite 
severed from the main area of the foot-hills. 
The unconformity of the Kern River group upon the Tem- 
blor is emphatically shown by an overlapping of the later 
group, although there is no clear evidence of an intervening 
epoch of erosion. 
. The absence from the Kern River area of any recognizable 
Monterey deposits, and presumably their absence from the 
whole eastern border of the Temblor basin, perhaps means a 
recessional movement of the sea, and therefore at least a 
slight upward movement of the land along its eastern and 
northern shores, and along portions of the Mt. Diablo Range. 
The greatest depression of the land-surface during the 
Neocene seems to have been during the Temblor epoch, and 
immediately following this was the Monterey epoch of relative 
elevation. 
The sequence of events during the early and middle Miocene, 
as shown in this area, conforms generally to that shown in the 
contemporaneous deposits about Coalinga and northward. 
The local contrasts in the thickness of the Temblor deposits - 
in and about the Temblor basin, and especially in their volcanic 
and detrital matter, suggest that land-denudation on the con- 
tinental side was relatively slight, while volcanic activity was 
prevalent during this epoch. 
The general absence of Monterey deposits, and the other 
evidences of elevation, taken in connection with the prevailingly 
organic character of these beds where they do occur, may be 
interpreted as indicating equable or arid climatic conditions; 
and the small aggregate thickness of Miocene strata on the 
landward side of the basin harmonizes with this view and may 
mean that such conditions prevailed in some measure through- 
out the Miocene. 
The Kern River group is correlated only tentatively with the 
oil-yielding formations of western Kern County, and such 
correlation is based chiefly on the data of the oil-measures 
themselves. 
