Page 3 - edwards1947
P. 3
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