Continued exploration of the Springs fault trend has resulted in the discovery of several oil accumulations. While development is still incomplete, the major structural and sedimentary conditions are discernible.

The structure in the Santa Margarita is a northwestward dipping homocline with local nosing against the Springs fault. Production is from the Santa Margarita against the fault and overlain by basal Chanac clays, or from sands of middle Miocene age within, or lying unconformably below, the "Valv" shale.

The oil ranges from 27° to 35° gravity and is produced from depths ranging from 400 to 1,750 feet.

The feature of this area is the high gravity of the oil produced from relatively shallow depths.

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