[1] The Kern River Beds Formation crops out in a roughly crescent-shaped belt, about 12 miles (19 km) wide at its widest, from Caliente Creek on the south to the Terra Bella vicinity on the north, a length of around 50 miles (80 km).
[1] The Kern River Series is composed of non-marine gravels, sands, and clays unconformably overlying the marine Miocene Period rocks in the Kern River area of the San Joaquin Valley.
[1] The Kern River Beds consists mostly of pale-yellow to light-brown sandstone and conglomerate, with interbeds of greenish-gray or greenish-brown siltstone and mudstone.
[1] The Kern River Beds Formation preserves fossils dating back to the Neogene Period of the Cenozoic Era.
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