Silurian Sangerville Formation, conglomerate member

Silurian Sangerville Formation conglomerate member
State Maine
Name Silurian Sangerville Formation, conglomerate member
Geologic age Silurian
Lithologic constituents
Major
Sedimentary > Clastic > ConglomerateGS - Greenschist facies; Protolith I - Conglomerate
Comments In western sequence of central Maine trough, divided into a main body, lower member near Woodstock (schist and granofels probably equivalent to member B), upper member near Woodstock (schist and granofels probably equivalent to member C), member A (in turn divided into gray shale and massive sandstone facies, massive sandstone facies, and polymict conglomerate facies), member B (in turn divided into quartz-rich, polymictic conglomerate facies and gray shale and sandstone facies), and member C (in turn divided into quartz conglomerate, sandstone, and gray shale; impure limestone and quartz conglomerate lenses; and upper gray shale and sandstone). Quartz conglomerate and quartzite of member C, as mapped by Moench and Pankiwskyj (1988) near north end of Kennebago Lake, ME, are here reassigned to Clough Quartzite. (ME004) Unit description from USGS GEOLEX website (ME078). GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; Protolith Q - Interbedded pelite and sandstone
References
NGMDB product
Counties Piscataquis - Somerset