Pogonip Group

Updated on Dec 25, 2024

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Type Geologic group Overlies Windfall Formation Regions Nevada, Utah		Country United States Underlies Copenhagen Formation
Sub-units Antelope Valley LimestoneNinemile FormationGoodwin Limestone

The Pogonip Group is an Ordovician period geologic group located in southern Nevada and in Utah.

Geology

Its subunits in Nevada, from youngest/later to oldest/earlier, are:

Goodwin Limestone — 1,800 metres (5,900 ft) thick

Ninemile Formation — 550 metres (1,800 ft) thick

Antelope Valley Limestone — 1,100 metres (3,600 ft) thick

It preserves fossils dating back to the Early Ordovician stage of the Ordovician period.

(Text) CC BY-SA