A6: Stratigraphic and Structural Traverse of Mount Moriah and the Wild River Wilderness Area

Migmatites in Pinkham Notch, New Hampshire

“…Such a front certainly suggests infiltration of fluids, and provides an opportunity to directly compare the migmatite with its protolith. In conjunction with geologic mapping in the area (trip A6, this volume; Allen, 1996a, Allen, 1992, I have undertaken detailed stable isotope, petrologic and geochemical studies of these schists and migmatites to determine the migmatization reaction and the role of fluids. Complete analytical details and results are given in Allen (1992).…”

Guidebook for Field Trips in Western Maine and Northern New Hampshire

“…The most recent NEIGC trip was led by and covered aspects of the Ordovician to Carboniferous bedrock geology and apatite fission track cooling history of the West Branch of the Peabody River in Pinkham Notch and again the Randolph, NH valley. Added to this list are the four excellent NEIGC fieldtrips led by Tim Allen on the stratigraphy, structure, and migmatites of the Pinkham Notch and adjacent Carter-Moriah Range (Allen, 1996(Allen, , 2017(Allen, and 2017b) and a pioneering trip led by who first proposed the Silurian age assignment for much of the geology and made the initial correlation to the Rangeley stratigraphy in Maine.…”

“…The New Hampshire bedrock geologic map ) updated these previous efforts and more or less retained the contacts shown by the Billings' and the stratigraphic assignments of . Tim Allen did his Ph.D. in Pinkham Notch and the difficult terrain of the Carter-Moriah region mapping the stratigraphy, structures, and migmatization (Allen 1996(Allen , 2017(Allen , and 2017b. Wes Groome and his University of Maine at Orono colleagues made many important contributions towards our understanding of the strain history during porphyroblast growth in the Littleton Formation as well as the development and strain patterns of the migmatites in the Rangeley Formation .…”

Bedrock Geology of Mt. Washington, Presidential Range, NH

“…The most recent NEIGC trip was led by Eusden et al (2009) and covered aspects of the Ordovician to Carboniferous bedrock geology and apatite fission track cooling history of the West Branch of the Peabody River in Pinkham Notch and again the Randolph, NH valley. Added to this list are the four excellent NEIGC fieldtrips led by Tim Allen on the stratigraphy, structure, and migmatites of the Pinkham Notch and adjacent Carter-Moriah Range (Allen, 1996(Allen, , 1996b(Allen, , 2017(Allen, and 2017b) and a pioneering trip led by Hatch and Wall (1986) who first proposed the Silurian age assignment for much of the geology and made the initial correlation to the Rangeley stratigraphy in Maine.…”

“…The New Hampshire bedrock geologic map (Lyons et al, 1997) updated these previous efforts and more or less retained the contacts shown by the Billings' and the stratigraphic assignments of Hatch and Moench (1984). Tim Allen did his Ph.D. in Pinkham Notch and the difficult terrain of the Carter-Moriah region mapping the stratigraphy, structures, and migmatization (Allen 1996(Allen , 1996b(Allen , 2017(Allen , and 2017bAllen et al, 2001). Wes Groome and his University of Maine at Orono colleagues made many important contributions towards our understanding of the strain history during porphyroblast growth in the Littleton Formation as well as the development and strain patterns of the migmatites in the Rangeley Formation .…”