Geology and oil resources of the eastern Puente Hills area, southern California

Abstract

south is generally considered to antecede the uplift of those areas. Other ancient streams that once crossed the Puente Hills area were diverted around the hills, leaving their beheaded valleys to smaller present-day intermittent streams. The courses of the larger south-trending canyons in the hills are offset as much as 8,800 feet in a right-lateral sense where they cross the Whittier fault zone. These offsets were probably caused by strike-slip movement in a right-lateral sense along the Whittier fault zone in late Pleistocene and Recent time.