Etchegoin Formation

Etchegoin Formation
Stratigraphic range: Pliocene epoch
Fossil from the Etchegoin Formation
TypeFormation
UnderliesSan Joaquin Formation, Kern River Beds Formation (east)
OverliesAntelope Shale of Monterey Formation, Chanac Formation (east)
Location
RegionSan Joaquin Valley, California
CountryUnited States

The Etchegoin Formation is a Pliocene epoch geologic formation in the lower half of the San Joaquin Valley in central California.[1][2]

  1. ^ USGS.gov: "Neogene Gas Total Petroleum System—Neogene Nonassociated Gas Assessment Unit of the San Joaquin Basin Province"; Chapter 22 of the Petroleum Systems and Geologic Assessment of Oil and Gas in the San Joaquin Basin Province, California; by Allegra Hosford Scheirer and Leslie B. Magoon.
  2. ^ 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).