A Hadean to Paleoarchean geodynamo recorded by single zircon crystals-Reference-Cited by-同舟云学术

A Hadean to Paleoarchean geodynamo recorded by single zircon crystals

Published:2015-07-31 Issue:6247 Volume:349 Page:521-524
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Tarduno John A.¹²,Cottrell Rory D.¹,Davis William J.³,Nimmo Francis⁴,Bono Richard K.¹

Affiliation:

1. Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, USA.

2. Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA.

3. Geological Survey of Canada, Ottawa K1A 0E8, Canada.

4. Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA 95064, USA.

Abstract

Unlocking Earth's ancient magnetic past The magnetic field protects Earth's surface from deadly cosmic radiation and provides clues about the planet's interior. Tarduno et al. found that some of the oldest minerals on Earth, Jack Hills zircons, preserved a record of a magnetic field over 4 billion years ago (see the Perspective by Aubert). Earth's magnetic field appears to have been fully operational a mere few hundred million years after the planet formed. This suggests an early start for plate tectonics and an ancient cosmic radiation shield that was important for habitability Science , this issue p. 521 ; see also p.

Funder

U.S. NSF

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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