. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. edivision of greenish-gray shale in the upper part of this member of theSespe, and it is reported that oil is derived from the white sandstoneat the base of the formation, and possibly also from certain stratain the upper part of the Topatopa formation. The source of the oilis, therefore, supposedly the same as in the wells of the Union Con-solidated Oil Company. The wells, five in number, yield a black oilof heavy gravity. One of the wells is said to have produced 40 bar-rels
. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. edivision of greenish-gray shale in the upper part of this member of theSespe, and it is reported that oil is derived from the white sandstoneat the base of the formation, and possibly also from certain stratain the upper part of the Topatopa formation. The source of the oilis, therefore, supposedly the same as in the wells of the Union Con-solidated Oil Company. The wells, five in number, yield a black oilof heavy gravity. One of the wells is said to have produced 40 bar-rels of heavy oil per day and to have yielded enough gas to run a 30-horsepower boiler. Considerable water rises with the oil, but of courseis easily separated in the settling tanks. No shipments of oil have asyet been made from this field, the entire product being consumed inthe operations of drilling. IVERS WELLS. The Ivers wells, located in Sespe Canyon a short distance belowDevilsgate, are drilled on and near the axis of a local anticline in thered sandstone lying about midway of the Sespe formation (see fig. 5).. Fig. 5.—Sketch map showing location of Ivers wells with relation to anticlinal axis in the Sespe red dots, wells productive in 1902. Figures indicate numbers of wells. Lines show outcrop ofbeds around nose of anticline. The anticline has a trend of N. 65° W. with an easterly pitch. Atransverse section of the anticline indicates a dip of about 75° on thesouth limb and 30° on the north limb. The particular horizonaffording oil is possibly well toward the bottom of the red beds, and isat least 600 feet lower than that from which the oil of the Kentuckwells, one-half or three-fourths of a mile to the south, is derived. 56 OIL DISTKICTS OF SOUTHERN CALIFORNIA. The westward extent of the I vers anticline was not determined, norare its relations to the other folds of the region known. Its generaltrend would carry it toward the mouth of Coldwater Canyon. Thech
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