Waits River Formation
| Waits River Formation | |
|---|---|
| Stratigraphic range: late Silurian to early Devonian | |
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| Type | sedimentary, metamorphic |
| Sub-units | Standing Pond Volcanic Member |
| Underlies | Bradford Schist |
| Lithology | |
| Primary | limestone |
| Other | phyllite, schist |
| Location | |
| Region | New England |
| Country | USA |
| Extent | Vermont, Massachusetts, New Hampshire |
| Type section | |
| Named for | Village of Waits River (within Topsham) and stream |
| Named by | C. H. Richardson, 1906[1] |
The Waits River Formation is a late Silurian to early Devonian limestone containing lesser amounts of phyllite and schist.
The description by the USGS is:
- Gray quartzose and micaceous crystalline limestone weathered to distinctive brown earthy crust; interbedded and intergradational with gray quartz-muscovite phyllite or schist. Where more metamorphosed the limestones contain actinolite, hornblende, zoisite, diopside, wollastonite, and garnet, and the phyllite and schist, biotite, garnet, and locally andalusite, kyanite, or sillimanite.[2]
References
- ^ Richardson, C.H., 1906, THE AREAL AND ECONOMIC GEOLOGY OF NORTHEASTERN VERMONT. From the Fifth Report Vermont State Geologist. Argus and Patriot Press, Montpelier, Vermont.
- ^ Waits River Formation, Mineral Resources On-Line Spatial Data