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Hornblende gabbro-diorite (VTY3Agb;0)
Geologic Formation
in
VT
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Lithology
Gabbro
Diorite
Geologic Age
Stenian (1200 Ma – 1000 Ma ago)
Geologic Unit Label
Y3Agb
Biotite-hornblende (±pyroxene) gabbro and diorite at Robinson Hill in Shrewsbury; exhibits fine-grained chill contact that crosscuts paragneiss units. Unit also in Lincoln Mountain massif and at Brandon Gap; similar rock mapped in the Adirondacks. Chittenden Intrusive Suite (1,149±8 Ma to 1,119±3 Ma). Mount Holly Complex intrusive rocks. Rocks of the Green Mountain and Lincoln Mountain massifs and eastern domes.
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