Mylonitic gneiss

Highly schistose, biotite-muscovite (±chlorite) feldspathic mylonite and mylonitic gneiss mapped near Brandon Gap; in the Pine Hill slice near South Wallingford is mapped as Yur. Mount Holly Complex intrusive rocks. Rocks of the Green Mountain and Lincoln Mountain massifs and eastern domes.
State Vermont
Name Mylonitic gneiss
Geologic age Age uncertain
Lithologic constituents
Major
Metamorphic > GneissHighly schistose, biotite-muscovite (±chlorite) feldspathic mylonite and mylonitic gneiss.
Tectonite > MyloniteHighly schistose, biotite-muscovite (±chlorite) feldspathic mylonite and mylonitic gneiss.
References
NGMDB product
Counties Addison - Rutland - Windsor