. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. EY : SESPE FORMATION. 9 ,hin bodies of shale. The material of this sandstone is in many placescoarse and gritty. Still higher are from 400 to 800 feet of sandstonemd shale, the latter being somewhat more prominent than lower downn the formation. While the conglomerate is principally developedis indicated, layers of comparatively coarse pebbles are not infre-quently encountered from the base to the summit of the red beds,rhere are, however, great masses of sandstone of uniform
. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. EY : SESPE FORMATION. 9 ,hin bodies of shale. The material of this sandstone is in many placescoarse and gritty. Still higher are from 400 to 800 feet of sandstonemd shale, the latter being somewhat more prominent than lower downn the formation. While the conglomerate is principally developedis indicated, layers of comparatively coarse pebbles are not infre-quently encountered from the base to the summit of the red beds,rhere are, however, great masses of sandstone of uniform texture and^olor, capable, it may be remarked incidentally, of yielding a building;tone of high grade. These beds as here described maintain theirprincipal characteristics of color, texture, and composition whereverencountered in the Topatopa Range and its subordinate occur in the type locality of the formation and form a conspicu->us feature along the northern edge of the Ojai Valley and farthervest, in the vicinity of Summerland and Santa Barbara. Scaleo ?oo aoo 600 feet Strike of strata N 70° W. ig. 3.—North-south section on north side of Lower Ojai Valley, showing lithologic variation in strata. RED BEDS IN THE OJAI VALLEY. The Sespe formation or what is believed to be its stratigraphicquivalent in the Ojai Valley consists of conglomerates, sandstones,nd shales, bright red and white, the former color largely predominat-lg. The red beds are not so unbroken, however, as in Sespe Canyon.)n the contrary they are interrupted not only by certain white sand-tones, but also by very considerable bodies of rusty sediments, whichi some instances suggest a transition to the formation that is possiblyfie equivalent of the Topatopa. This lithologic variation is illus-trated in the accompanying profile (fig. 3), which is taken from theWer slopes of the range bordering the Lower Ojai Valley on the shales of the formation are not conspicuous, except in the region
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