Eclogites of the Snowbird tectonic zone: petrological and U-Pb geochronological evidence for Paleoproterozoic high-pressure metamorphism in the western Canadian Shield

2004 ◽  
Vol 147 (5) ◽  
pp. 528-548 ◽  
Author(s):  
Julia A. Baldwin ◽  
Samuel A. Bowring ◽  
Michael L. Williams ◽  
Ian S. Williams
Keyword(s):  
High Pressure ◽  
Canadian Shield ◽  
Tectonic Zone ◽  
High Pressure Metamorphism ◽  
Geochronological Evidence

Timing of high-pressure metamorphism in the Yukon – Tanana terrane, Canadian Cordillera: constraints from U – Pb zircon dating of eclogite from the Teslin tectonic zone

1997 ◽  
Vol 34 (5) ◽  
pp. 709-715 ◽  
Author(s):  
Robert A. Creaser ◽  
Larry M. Heaman ◽  
Philippe Erdmer
Keyword(s):  
High Pressure ◽  
Continental Margin ◽  
Metamorphic Event ◽  
Canadian Cordillera ◽  
Early Permian ◽  
Isotopic Age ◽  
Tectonic Zone ◽  
High Pressure Metamorphism ◽  
The North ◽  
First Time

Zircon from eclogite near Last Peak in the Teslin tectonic zone yielded a U–Pb isotopic age of 269 + 2 Ma (2σ), the first precise age for such a rock in the Yukon –Tanana terrane of the Canadian Cordillera. Both the morphology and geochemistry of the eclogitic zircons indicate a metamorphic origin, and the U – Pb age therefore constrains the timing of peak high-pressure metamorphism in this rock. The U – Pb age demonstrates for the first time that an Early Permian high-pressure metamorphic event occurred in rocks now making up the Teslin tectonic zone, and possibly elsewhere in the Yukon – Tanana terrane. This U – Pb age provides a new geochronologic "pin" in the evolution of the Yukon – Tanana terrane prior to its Mesozoic accretion to the North American continental margin and, combined with recent 40Ar/39Ar muscovite data, indicates that high-pressure metamorphism at this time was a relatively short-lived event.

Archean high-pressure metamorphism in the western Canadian Shield

1995 ◽  
Vol 7 (6) ◽  
pp. 1251-1272 ◽  
Author(s):  
David R. Snoeyenbos ◽  
Michael L. Williams ◽  
Simon Hanmer
Keyword(s):  
High Pressure ◽  
Canadian Shield ◽  
High Pressure Metamorphism

The occurrence and timing of high-pressure metamorphism on Margarita Island, Venezuela: a constraint on Caribbean-South America interaction

2009 ◽  
Vol 328 (1) ◽  
pp. 705-741 ◽  
Author(s):  
Walter V. Maresch ◽  
Rolf Kluge ◽  
Albrecht Baumann ◽  
James L. Pindell ◽  
Gabriela Krückhans-Lueder ◽  
...  
Keyword(s):  
High Pressure ◽  
South America ◽  
High Pressure Metamorphism

40Ar-39Ar and Rb-Sr geochronology of high-pressure metamorphism and exhumation history of the Tavsanli Zone, NW Turkey

1999 ◽  
Vol 137 (1-2) ◽  
pp. 46-58 ◽  
Author(s):  
Sarah Sherlock ◽  
Simon Kelley ◽  
Simon Inger ◽  
Nigel Harris ◽  
Aral Okay
Keyword(s):  
High Pressure ◽  
High Pressure Metamorphism ◽  
Nw Turkey ◽  
History Of ◽  
Exhumation History
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