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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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Recent excavations made in the Cheviot Hills, Los Angeles County, California, have exposed fossiliferous marine Pleistocene strata. Two new formations occur in this area. The lower Pleistocene Anchor silt consists of 60 feet of soft buff silts, and is unconformably overlain by the upper Pleistocene Medill sand, consisting of 60 feet of grayish, loosely consolidated sand and gravel.
Eighty-three species of fossils, mostly mollusks, are identified from five localities in the Anchor silt, and 21 species of mollusks are identified from a single locality in the Medill sand. The fauna of the Anchor silt probably lived offshore at a depth of 25-35 fathoms on a silty or muddy bottom, and in water considerably colder than that present today at this latitude and depth. The fauna of the Medill sand represents a warm bay habitat.
The Anchor silt is faunally and lithologically similar to parts of the San Pedro and Timms Point formations at San Pedro, to small exposures of lower Pleistocene in the Pacific Palisades area, and to unnamed lower Pleistocene units in the Baldwin Hills.
The Cheviot Hills are along the Newport-Inglewood uplift, 1½ miles southwest of the Beverly Hills oil field.
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