~3,850 Ma tonalites in the Nuuk region, Greenland: geochemistry and their reworking within an Eoarchaean gneiss complex

• Main Authors: Nutman, Allen, Bennett, Victoria, Friend, Clark R L, Horie, Kenji, Hidaka, Hiroshi
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Springer 2015
• Subjects: Keywords: Archean; crustal evolution; igneous geochemistry; isotopic composition; magma; migmatite; neodymium isotope; orthogneiss; SHRIMP dating; tonalite; zircon; Arctic; Greenland; Nuuk Crustal evolution; Eoarchaean; Itsaq Gneiss Complex; Nd isotopes; Tonalites; Zircons; Nuuk; Itilleq
• Online Access: http://hdl.handle.net/1885/34307

The Eoarchaean (>3,600 Ma) Itsaq Gneiss Complex of southern West Greenland is dominated by polyphase orthogneisses with a complex Archaean tectonothermal history. Some of the orthogneisses have c. 3,850 Ma zircons, and they vary from rare single phase metatonalites to more common complexly banded...