From Rodinia to Pangea: The Lithotectonic Record of the Appalachian Region

High-precision U-Pb zircon dates for Ediacaran granitoid rocks in SE New England: Revised magmatic chronology and correlation with other Avalonian terranes
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Published:September 01, 2010
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CiteCitation
M.D. Thompson, J. Ramezani, S.M. Barr, O.D. Hermes, 2010. "High-precision U-Pb zircon dates for Ediacaran granitoid rocks in SE New England: Revised magmatic chronology and correlation with other Avalonian terranes", From Rodinia to Pangea: The Lithotectonic Record of the Appalachian Region, Richard P. Tollo, Mervin J. Bartholomew, James P. Hibbard, Paul M. Karabinos
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Terminal Neoproterozoic (Ediacaran) granitoid rocks underlie most of the Southeastern New England Avalon Zone. Major- and trace-element analyses on representative samples from Massachusetts and Rhode Island corroborate earlier interpretations that these rocks were formed in a subduction-related setting. New crystallization ages from the same suite are 609.5 ± 1.1 Ma, 609.1 ± 1.1 Ma, and 608.9 ± 1.2 Ma for units of the Dedham Granite; 606.3 ± 1.2 Ma for the Milford Granite; 604.4 ± 1.2 Ma for the Fall River Granite; and 599 ± 2 Ma for the Esmond Granite (2σ errors, including internal and external uncertainties). The Avalonian...
- absolute age
- Antigonish County Nova Scotia
- Antigonish Nova Scotia
- Appalachians
- Avalonian Orogeny
- Canada
- chronology
- Cobequid Highlands
- dates
- Eastern Canada
- Ediacaran
- granites
- igneous rocks
- intrusions
- magmatism
- Maritime Provinces
- mass spectra
- Massachusetts
- Neoproterozoic
- nesosilicates
- New England
- North America
- Northern Appalachians
- Nova Scotia
- orthosilicates
- plutonic rocks
- plutons
- Precambrian
- Proterozoic
- Rhode Island
- silicates
- spectra
- subduction
- thermal ionization mass spectra
- U/Pb
- United States
- upper Precambrian
- Vendian
- zircon
- zircon group
- Milford Granite
- Esmond Granite
- Fall River Granite
- Dedham Granite