Silurian unnamed conglomerate

Silurian unnamed conglomerate
State Maine
Name Silurian unnamed conglomerate
Geologic age Silurian
Lithologic constituents
Major
Sedimentary > Clastic > ConglomerateW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith I - Conglomerate
Comments Named Smyrna Mills Formation for town of Smyrna Mills in the Smyran Mills quadrangle, ME. Consists of varying clastic rock types including slate, siltstone, quartzite, quartz graywacke and some calcareous types. Its lower contact with underlying ribbon rock member of Meduxnekeag Formation is gradational. (ME051) Unit description from USGS GEOLEX website (ME078). W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith Q - Interbedded pelite and sandstone
References
NGMDB product
Counties Aroostook - Penobscot - Somerset