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AUTHOR'S NOTE

In the Eastern part of the Ventura Basin are

several areas in which the detai].s of structure and strati-

graphy are little known. The Humphreys Station Area is one

of these.

Although detailed studies of some of the formations

here exposed have been made in other places, the only areal

geologic mapping in the immediate ·vic.ini ty was of a recon-

naissance nature.i That work, although somewhat generalized,

was sufficiently accurate tl1a.t the understanding of the

geology of the Ventura Basin as a whole was advanced by it.

More intensive study naturally brings to light new evidences;

and it is the writer's hope that the interpretations put

forth in the present paper may be of value in the clarification

of some of the current problems in the easternmost Ventura

Basin.

i A semi-detailed report by C.D. Cooksey (1934} may be
found in the divisional files of California Institute
of Technology. Thia was presented as a Master of
Science Thesis in 1934.