Pinnacle Formation - cobble and boulder conglomerate member

Poorly sorted, matrix-supported quartz- and gneiss-cobble to boulder conglomerate, locally containing quartzite boulders as large as 3 m in diameter, in a matrix of gray-weathering magnetite-calcite-chlorite-muscovite-biotite-feldspar schist. Cover rocks of the Lincoln Mountain massif and northwestern flank of the Green Mountain massif.
State Vermont
Name Pinnacle Formation - cobble and boulder conglomerate member
Geologic age Cambrian and Neoproterozoic
Lithologic constituents
Major
Sedimentary > Clastic > ConglomeratePoorly sorted, matrix-supported quartz- and gneiss-cobble to boulder conglomerate.
Minor
Metamorphic > Metasedimentary > Metaclastic > QuartziteLocally containing quartzite boulders as large as 3 m in diameter, in a matrix of gray-weathering magnetite-calcite-chlorite-muscovite-biotite-feldspar schist.
Metamorphic > Schist > Mica-schistLocally containing quartzite boulders as large as 3 m in diameter, in a matrix of gray-weathering magnetite-calcite-chlorite-muscovite-biotite-feldspar schist.
References
NGMDB product
Counties Addison