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MAP

Topo

Rock Formations

Measure

Copyright © Natural Atlas | Roads, Buildings © OSM Contributors | Data Sources

Topo

Ecoregions

Public Lands

...

BASEMAPS

Default Weather

Temperature

Smoke

...

WEATHER

Three Forks Formation

Geologic Formation

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Lithology

Dolostone

Limestone

Siltstone

Other (6,771 mi²)

Geologic Age

Late Devonian – Mississippian (384.3 Ma – 323.6 Ma ago) (994 mi²)

Famennian – Tournaisian (373.8 Ma – 347.1 Ma ago) (611 mi²)

Famennian – Tournaisian (373.8 Ma – 347.1 Ma ago) (121 mi²)

Other (152 mi²)

Geologic Unit Label

MD (994 mi²)

MDtm (611 mi²)

MDtj (121 mi²)

Other (152 mi²)

Taxonomy

Classified As

Geologic Formation