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Chanac Formation : ウィキペディア英語版 | Chanac Formation
The Chanac Formation is a Cenozoic Era sandstone geologic formation in the southeastern San Joaquin Valley, within Kern County, California.〔(USGS.gov: "The Kern River Formation, Southeastern San Joaquin Valley, California" ); Geological Survey Bulletin 1529-D; By J. Alan Bartow and Gardner M. Pittman; United States Government Printing Office, Washington, D.C.; 1983 (with map on pg. D4).〕 ==Geology== The Kern River Series is divided into the lower Chanac Formation unit, and the upper Kern River Beds Formation unit, with the wedge of the Etchegoin Formation in the middle in the western section.〔 It is composed of sandstone and cobble conglomerate.〔 It overlies the Miocene Period Santa Margarita Formation. It preserves fossils dating back to the Neogene period.〔(【引用サイトリンク】author= Various Contributors to the Paleobiology Database )〕
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