Sawyer Mountain Formation

Greenish-gray to dark-gray, pyritic, locally calcareous phyllite and light-gray, locally pyritic and calcareous, fine- to medium-grained, feldspar-rich metasandstone; some beds punky weathering. Graded grit and conglomerate beds (having cobble-size clasts of quartz and felsite) toward base. Interpreted as transitional between Connecticut Valley and Bronson Hill sequences and correlative with Frontenac Formation. Stratified rocks of the Bronson Hill arch and Sawyer Mountain belt.
State Vermont
Name Sawyer Mountain Formation
Geologic age Devonian and Silurian
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > MetasandstoneLight-gray, locally pyritic and calcareous, fine- to medium-grained, feldspar-rich metasandstone.
Metamorphic > Metasedimentary > Metaclastic > PhylliteGreenish-gray to dark-gray, pyritic, locally calcareous phyllite.
Minor
Sedimentary > Clastic > ConglomerateGraded grit and conglomerate beds (having cobble-size clasts of quartz and felsite) toward base.
Comments Original label is Ssm, but age is listed as Devonian and Silurian. Changed unit label to DSsm.
References
NGMDB product
Counties Orange