Phosphoria Formation photograph

Phosphoria Formation

Geological formation
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Area350000
UnderliesDinwoody Formation
ThicknessUp to 420 metres (1,380 ft)
Primary Limestone
Dolostone
Shale
Regions Idaho
Montana
Utah
Wyoming
OverliesCasper Formation
Park City Formation
Tensleep Sandstone
Date of Reg.
Date of Upd.
ID3126281
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About Phosphoria Formation

The Phosphoria Formation of the western United States is a geological formation of Early Permian age. It represents some 15 million years of sedimentation, reaches a thickness of 420 metres and covers an area of 350,000 square kilometres.

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