Clallam Formation

Clallam Formation
Stratigraphic range:
TypeFormation
UnderliesQuinault Formation
OverliesPysht Formation
Lithology
PrimarySandstone, conglomerate, shale
OtherCoal
Location
RegionWashington (state)
CountryUnited States
Type section
Named forClallam County, Washington

The Clallam Formation is a geologic formation in Washington (state). It preserves marine fossils dating back to the late Oligocene and early Miocene period. It outcrops on the northern Olympic Peninsula and along parts of the Strait of Juan de Fuca.

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