The Etchegoin Formation
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 The Etchegoin Formation is a Lower Pliocene-age geologic unit in the San Joaquin Valley. Included in the Etchegoin are some of the main producing reservoirs in the valley. 
 
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A Gallery of Pictures from the Etchegoin Formation
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![]() Under Construction  | 
![]() Under Construction  | 
![]() Under Construction  | 


