Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Vermont
|Name||Waits River formation, Standing Pond Volcanic Member|
|Original map label||Dws|
|Comments||Part of Eastern Vermont Authors disagree with Hatch (1991) regarding age of Gile Mountain Formation, Waits River Formation, and Standing Pond Volcanic Member of Waits River Formation. The Standing Pond Volcanic Member occurs mostly along mapped Gile Mountain-Waits River contact. 70 km south of Ely, VT, a felsic dike dated as Middle Silurian by Aleinikoff and Karabinos (1990) intrudes the Standing Pond; this effectively dates the Waits River Formation as no younger than Middle Silurian. The overlying Gile Mountain Formation is tentatively assigned a Middle Silurian(?) to Early Devonian age. The Early Devonian part of its age is based on plant fossils in equivalent rocks 100 km to the north in Quebec, as reported by Hueber and others (1990) (Offield and others, 1993) per VT028.|
|Primary rock type||amphibolite|
|Secondary rock type||schist|
|Other rock types||greenstone|
Metamorphic > Schistcoarse garnet schist with fasciculitic hornblende, and hornblende maculite
Metamorphic > Amphiboliteamphibolite, garnet amphibolite
Metamorphic > Metaigneous > GreenstoneContains pillow lavas near St. Johnsbury and passes eastward into actinolitic greenstone and greenstone south of Windsor.
Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272.
Doll, C.G., Cady, W.M., Thompson, J.B., Jr., and Billings, M.P., 1961, Centennial Geologic Map of Vermont: Vermont Geological Survey, Miscellaneous Map MISCMAP-01, scale 1:250,000.
|Geographic coverage||Caledonia - Essex - Orange - Orleans - Windham - Windsor|
Show this information as [XML]