Newport Intrusive Complex - granodiorite

Tan to light-bluish-gray, brown-weathering, medium- to coarse-grained, equigranular to porphyritic foliated granodiorite composed of quartz, plagioclase, perthite, microcline, biotite, and sericite. Part of the Lake Memphremagog Intrusive Suite (425±3 Ma to 418.5±2 Ma).
State Vermont
Name Newport Intrusive Complex - granodiorite
Geologic age Late Silurian
Lithologic constituents
Major
Igneous > Plutonic > Granitic > GranodioriteTan to light-bluish-gray, brown-weathering, medium- to coarse-grained, equigranular to porphyritic foliated granodiorite composed of quartz, plagioclase, perthite, microcline, biotite, and sericite.
References
NGMDB product
Counties Orleans - Windham