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From Rodinia to Pangea: The Lithotectonic Record of the Appalachian Region
Author(s)
Richard P. Tollo;
Richard P. Tollo
Geological Sciences Program, George Washington University, Washington, D.C., USA
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Mervin J. Bartholomew;
Mervin J. Bartholomew
Department of Earth Sciences, University of Memphis, Memphis, Tennessee, USA
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James P. Hibbard;
James P. Hibbard
Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina, USA
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Paul M. Karabinos
Paul M. Karabinos
Department of Geosciences, Williams College, Williamstown, Massachusetts, USA
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Geological Society of America

Volume
206
Copyright:
© 2010 Geological Society of America
Attribution: You must attribute the work in the manner specified by the author or licensor (but no in any way that suggests that they endorse you or your use of the work). Noncommercial - you may not use this work for commercial purpose. No Derivative works - You may not alter, transform, or build upon this work. Sharing - Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited photocopies of items in this journal for noncommercial use in classrooms to further education and science.
ISBN print:
9780813712062
Publication date:
September 01, 2010
Book Chapter
Magmatism in the Vermont Appalachians
Author(s)
Raymond A. Coish
Geology Department, Middlebury College, Middlebury, Vermont 05753, USA
Raymond A. Coish
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Published:September 01, 2010
The Vermont Appalachians expose metamorphosed magmatic rocks ranging in age from Late Proterozoic to Cretaceous. Geochemistry, in concert with stratigraphic, structural, and metamorphic studies, reveals the origins of the magmatic rocks. Late Proterozoic–Early Cambrian dikes and greenstones in western Vermont formed during rifting of the Laurentian continent to form the Iapetus Ocean. Cambrian serpentinized peridotite represents forearc suprasubduction zone ophiolitic fragments. Cambrian to Ordovician amphibolites and felsic gneisses were formed as part of the Shelburne Falls volcanic arc. The Early Ordovician Mount Norris intrusive suite formed in an extensional setting in the vicinity of the Shelburne Falls arc. Silurian extensional...
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Index Terms/Descriptors
- amphibolites
- Appalachians
- crust
- delamination
- dikes
- extension
- geochemistry
- gneisses
- granites
- greenstone
- Iapetus
- igneous rocks
- intrusions
- island arcs
- lamprophyres
- Laurentia
- lithosphere
- lower crust
- magmatism
- mantle
- Mesozoic
- metaigneous rocks
- metamorphic rocks
- metasomatism
- Neoproterozoic
- North America
- ophiolite
- Paleozoic
- partial melting
- peridotites
- plate tectonics
- plutonic rocks
- Precambrian
- Proterozoic
- rifting
- schists
- serpentinization
- subduction zones
- ultramafics
- United States
- upper Precambrian
- Vermont
Latitude & Longitude
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