Devonian Chapman Sandstone (MEDch;0)

State	Maine
Name	Devonian Chapman Sandstone
Geologic age	Devonian
Lithologic constituents	Major Sedimentary > Clastic > SandstoneW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith D - Lithic sandstone Incidental Sedimentary > Clastic > Mudstone > ShaleW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith D - Lithic sandstone
Comments	AC - High rank amphibolite facies; Protolith A - Pelite; Eliminated ? in map symbol due to digital confusion in FileMaker regarding special characters. New map symbol for Carrabassett Formation (uncertain) is Dcu in both this file and the digital map file.
References	Osberg, P.H., Hussey, A.M., and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Dept. of Conserv., scale 1:500,000. Williams, H.S., 1900, The Paleozoic faunas of Maine, Part 1, IN Williams, H.S., and Gregory, H.E., Contributions to the geology of Maine: U.S. Geological Survey Bulletin, 165, p.15-92. https://pubs.er.usgs.gov/publication/b165 Boucot, A.J., Field, M.T., Fletcher, R., Forbes, W.H., Naylor, R.S., and Pavlides, L., 1964, Reconnaissance bedrock geology of the Presque Isle quadrangle, Maine: Maine Geol. Surv., Bull. 15, 117 p. US Geological Survey, 2005, National Geologic Map Database, Geologic Names Lexicon "GEOLEX", http://ngmdb.usgs.gov/Geolex/.
NGMDB product	NGMDB product page for 16547
Counties	Aroostook

State

Name

Devonian Chapman Sandstone

Geologic age

Devonian

Lithologic constituents

Major

Sedimentary > Clastic > SandstoneW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith D - Lithic sandstone

Incidental

Sedimentary > Clastic > Mudstone > ShaleW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith D - Lithic sandstone

Comments

AC - High rank amphibolite facies; Protolith A - Pelite; Eliminated ? in map symbol due to digital confusion in FileMaker regarding special characters. New map symbol for Carrabassett Formation (uncertain) is Dcu in both this file and the digital map file.

References

Osberg, P.H., Hussey, A.M., and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Dept. of Conserv., scale 1:500,000.

Williams, H.S., 1900, The Paleozoic faunas of Maine, Part 1, IN Williams, H.S., and Gregory, H.E., Contributions to the geology of Maine: U.S. Geological Survey Bulletin, 165, p.15-92.

https://pubs.er.usgs.gov/publication/b165

Boucot, A.J., Field, M.T., Fletcher, R., Forbes, W.H., Naylor, R.S., and Pavlides, L., 1964, Reconnaissance bedrock geology of the Presque Isle quadrangle, Maine: Maine Geol. Surv., Bull. 15, 117 p.

US Geological Survey, 2005, National Geologic Map Database, Geologic Names Lexicon "GEOLEX", http://ngmdb.usgs.gov/Geolex/.

NGMDB product

NGMDB product page for 16547

Counties

Aroostook