Silurian Sangerville Formation, limestone member

Silurian Sangerville Formation limestone member
State Maine
Name Silurian Sangerville Formation, limestone member
Geologic age Silurian
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metacarbonate > Marble (Greenschist, Amphibolite)GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith N - Limestone and/or dolostone
Minor
Metamorphic > Metasedimentary > Calc-silicate-rock (Greenschist, Amphibolite)GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith N - Limestone and/or dolostone
Metamorphic > Granoblastic > Granofels (Greenschist, Amphibolite)GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith N - Limestone and/or dolostone
Metamorphic > Schist (Greenschist, Amphibolite)GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith N - Limestone and/or dolostone
Comments W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith T - Rhyolitic volcanic rocks
References
NGMDB product
Counties Androscoggin - Franklin - Kennebec - Penobscot - Piscataquis - Somerset