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Rock Formations

Measure

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Retrograde gneiss (VTYur;0)

Geologic Formation near Tinmouth, VT

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Lithology

Geologic Age

Mesoproterozoic (1600 Ma – 1000 Ma ago)

Geologic Unit Label

Yur

Mylonitic chlorite-biotite-microcline-quartz gneiss, occurring as a sliver in the Shelburne Marble, South Wallingford. Part of the aluminous schists and gneisses of the Washington Gneiss and Wilcox Formation and related rocks. Mount Holly Complex paragneiss. Rocks of the Green Mountain and Lincoln Mountain massifs and eastern domes.

— USGS

Nearby Geologic Formations

Ira Formation - conglomerate (VTOilc;0)

Geologic Formation near Wallingford, VT

Winooski Dolostone (VTCAw;0)

Geologic Formation in VT, NY

Winooski Dolostone

Geologic Formation in VT, NY

Dalton Formation - phyllite member (VTCAZdph;0)

Geologic Formation in VT

Cheshire Quartzite - phyllite (VTCAcb;0)

Geologic Formation near Wallingford, VT

West Castleton and Hatch Hill(?) Formations - undifferentiated (VTCAwcu;0)

Geologic Formation in VT

Castleton Conglomerate (VTCAco;0)

Geologic Formation in VT

Castleton Conglomerate

Geologic Formation in VT

Dolomite marble (VTY?dm;0)

Geologic Formation near Mount Tabor, VT

Taxonomy

Geographic Places

Geological Feature

Geologic Formation

Classified As

Geologic Formation

Retrograde gneiss (VTYur;0)

Retrograde gneiss (VTYur;0)

Retrograde gneiss (VTYur;0)