Chanac Formation

{{Short description|Geologic formation in the San Joaquin Valley, California, US}}

{{Infobox rockunit

| name = Chanac Formation

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| type = Geological formation

| age = Neogene

| period = Neogene

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| region = San Joaquin Valley, Kern County, California

| country = United States

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| underlies =Etchegoin Formation, Kern River Beds Formation

| overlies =Santa Margarita Formation

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The Chanac Formation is a Cenozoic Era sandstone geologic formation in the southeastern San Joaquin Valley, within Kern County, California.[http://pubs.usgs.gov/bul/1529d/report.pdf 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).