Retrograde gneiss

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.
State Vermont
Name Retrograde gneiss
Geologic age Mesoproterozoic
Lithologic constituents
Metamorphic > Metasedimentary > ParagneissMylonitic chlorite-biotite-microcline-quartz gneiss.
NGMDB product
Counties Rutland