Building Archean cratons from Hadean mafic crust-Reference-Cited by-同舟云学术

Building Archean cratons from Hadean mafic crust

Published:2017-03-17 Issue:6330 Volume:355 Page:1199-1202
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

O’Neil Jonathan¹^ORCID,Carlson Richard W.²^ORCID

Affiliation:

1. Department of Earth and Environmental Sciences, University of Ottawa, Ottawa, Canada.

2. Department of Terrestrial Magnetism, Carnegie Institution for Science, Washington, DC 20015, USA.

Abstract

Archean cratons get a Hadean mash-up The vast majority of the rock record over Earth's 4.6-billion-year history has been destroyed through subduction and recycling back into the mantle. Although some slivers of 4-billion-year-old crust remain in the rock record, only isolated zircon mineral grains are dated to be older. However, O'Neil and Carlson found isotopic evidence of reworked basaltic crust more than 4.3 billion years old mixed into some of the 2.7-billion-year-old rocks of the Superior Province in Canada. Thus, our planet's oldest crust was reworked and retained during formation of at least one continental craton. Science , this issue p. 1199

Funder

Natural Sciences and Engineering Research Council of Canada

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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