| State | Maine |
|---|---|
| Name | Silurian Dennys Formation, mafic to felsic volcanic rock member |
| Geologic age | Silurian |
| Lithologic constituents | Major
Igneous > Volcanic > Mafic-volcanicGS - Greenschist facies; Protolith W - Mafic to felsic volcanic rocks
Igneous > Volcanic > Felsic-volcanicGS - Greenschist facies; Protolith W - Mafic to felsic volcanic rocks
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| Comments | Secondary unit description from USGS Geologic Names lexicon (ref. ME078): Used as Kittery Formation of Merrimack Group. Consists of tan, calcareous metasandstone exhibiting graded bedding, and green phyllite. GS - Greenschist facies; Protolith K - Calcareous feldspathic sandstone |
| 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.Berry, W.B.N., and Boucot, A.J., 1970, Correlation of the North American Silurian Rocks: Geol. Soc. Amer., Special Paper 102, 289 p. |
| NGMDB product | |
| Counties | Washington |