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MAP

Topo

Rock Formations

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Topo

Ecoregions

Public Lands

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BASEMAPS

Default Weather

Temperature

Smoke

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WEATHER

Metasedimentary and metavolcanic rocks (WYWVsv;0)

Geologic Formation in WY

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Lithology

Metaconglomerate

Schist

Quartzite

Other (790 mi²)

Geologic Age

Precambrian Archean (4000 Ma – 2500 Ma ago)

Geologic Unit Label

WVsv

Amphibolite, hornblende gneiss, biotite gneiss, quartzite, iron-formation, metaconglomerate, marble, and pelitic schist; locally preserved textures and structures suggest origin to be sedimentary or volcanic. Older than 2,875 Ma in Teton Range; older than 3,200 Ma in Granite Mountains; older than 2,600 Ma in Medicine Bow Mountains and Sierra Madre, where it is the Late Archean Phantom Lake Metamorphic Suite 3.

— USGS

Taxonomy

Classified As

Geologic Formation