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Reworking of Hadean crust in the Acasta gneisses, northwestern Canada: Evidence from in-situ Lu-Hf isotope analysis of zircon

Date

Authors

Iizuka, Tsuyoshi

Komiya, Tsuyoshi

Johnson, Simon P

Kon, Yoshiaki

Maruyama, Shigenori

Hirata, Takafumi

Publisher

Elsevier

Abstract

The Acasta Gneiss Complex of northwestern Canada comprises early Archean orthogneisses and includes the oldest known terrestrial rocks (3.94-4.03 Ga). Previous zircon geochronological studies revealed the presence of zircon xenocrysts with ages up to 4.2

Keywords

Keywords: cathodoluminescence; crustal evolution; geochronology; Hadean; hafnium; inductively coupled plasma method; isotopic analysis; isotopic composition; lutetium; orthogneiss; zircon; Canada; North America; Acasta Ancient zircon; Crustal evolution; Crustal reworking; Hadean; LA-MC-ICPMS; Lu-Hf isotope

URI

http://hdl.handle.net/1885/49796

Collections

ANU Research Publications

Source

Chemical Geology

Type

Journal article

DOI

10.1016/j.chemgeo.2008.11.007

Restricted until

2037-12-31

Downloads

File

Description

01_Iizuka_Reworking_of_Hadean_crust_in_2009.pdf (701.59 KB)

02_Iizuka_Reworking_of_Hadean_crust_in_2009.pdf (18.32 KB)