Page 3 - edwards1947

ABSTRACT

The Del Valle area ls a part ot an east-west synol inal

basin looa ted near the eastern end of the Ventura Basin. It

is also a part o:f the Transverse Range region of southern

Californi.a and its struotural' trends are therefore predominant•

ly east•west. The area ls oharaoterized, structurally, by

folding and overthru.et faulting with some minor norUJB.l fault•

ing. The formaticns consist entirely of sedimentary rocks

ranging in age from .Miootme to Reoent. Beds of the Saugus,

ur,per and lower ?ioo, and Repetto formations are exposed at the

surface, and consist of sands. sandetonee, eUtstonee, and

shales. local terraoe sands ant gravels and alluvial depoelta

are also present. Two productive oil fields, the Del Valle

and Ramona oil fields are located within this area.

INTRO DUOT IOI

The Del Valle area is in the western part of Los Au«eles

County. about 40 m1lee north o:t the center of the city ot Los

Angeles and 4· miles west of Casta1o Ju.mtion on the north side

of the Santa Clara River. The area discussed in this report,

roughly triangu.lar in shape, is approximately 12 square miles

in extent and is bounded on the west by longitude 118° 42' West,

on the north by Latitude 34• 28' North. by Hasley Canyon on

the northeast and by the Santa Clara River Valley on the 9:; uth