Devonian Ironbound Mountain Formation

Devonian Ironbound Mountain Formation
State Maine
Name Devonian Ironbound Mountain Formation
Geologic age Devonian
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Slate (Greenschist, Zeolitic (prehnite-pumpellyite))GS - Greenschist facies; W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith A - Pelite
Comments GS - Greenschist facies; Protolith L - Calcareous quartz sandstone
Stratigraphic units Seboomook Group
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.

Marvinney, R.G., 1989, Bedrock geology of the southeastern margin of the Connecticut Valley-Gaspe synclinorium in Somerset County, Maine, IN Berry, A.W., Jr., Guidebook for field trips in southern and west-central Maine: New England Intercollegiate Geological Conference Guidebook, 81st Annual Meeting, Farmington, ME, October 13-15, 1989, p. 212-237.

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

NGMDB product
Counties Franklin - Oxford - Piscataquis - Somerset