| State | New Hampshire |
|---|---|
| Name | Two-mica granite of the Sebago batholith and Effingham pluton of eastern New Hampshire |
| Geologic age | Mississippian - Pennsylvanian |
| Lithologic constituents | Major
Igneous > Plutonic > Granitic > Granite (Batholith)Two-mica granite of the Sebago batholith and Effingham pluton of eastern New Hampshire.
|
| Comments | Sebago batholith = 325+/-? Rb/Sr per NH026. 325+/-3 U/Pb per NH017. 298+/-2 U/Pb per J.N. Aleinikoff, oral commun., Dec. 24, 1992. Effingham pluton = 325+/-? Rb/Sr per NH026. |
| References | Lyons, J.B., Bothner, W.A., Moench, R.H., and Thompson, J.B., Jr., 1997, Bedrock Geologic Map of New Hampshire: Reston, VA, U.S. Geological Survey Special Map, 2 sheets, scale 1:250,000.https://ngmdb.usgs.gov/Prodesc/proddesc_37338.htm Aleinikoff, J.N., and Moench, R.H., 1985, Metavolcanic stratigraphy in northern New England and U-Pb zircon chronology [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 1.Hayward, J.A., and Gaudette, H.E., 1984, Carbiniferous age of the Sebago and Effingham plutons, Maine and New Hampshire [abs.]: Geological Society of America Abstracts with Programs, v. 16, p. 22. |
| NGMDB product | |
| Counties | Carroll - Coos |