Gile Mountain Formation, undivided

Gray to tan metawacke and schist or phyllite; gradational into Meetinghouse Slate Member but more thickly bedded and less pelitic than the member. Includes minor metavolcanic lentils.
State New Hampshire
Name Gile Mountain Formation, undivided
Geologic age Lower Devonian
Lithologic constituents
Major
Metamorphic > Schist
Minor
Metamorphic > Metasedimentary > Metaclastic > Slate
Metamorphic > Metasedimentary > Metaclastic > Metasandstone > Metagraywacke
Metamorphic > Metasedimentary > Metaclastic > Phyllite
Incidental
Metamorphic > Metaigneous > Metavolcanicincludes minor metavolcanic lentils
Comments Part of the Grenville Terrane (Connecticut Valley Trough).
References
NGMDB product
Counties Coos