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Published September 15, 2016 | Version Supplemental Material
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Reply to Comment on "Pervasive remagnetization of detrital zircon host rocks in the Jack Hills, Western Australia and implications for records of the early dynamo"

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Abstract

Determining the history of Earth's dynamo prior to the oldest known well-preserved rock record is one of the ultimate challenges in the field of paleomagnetism. Tarduno et al. (2015) argued that detrital zircons contain records of an active dynamo dating back to 4.2 billion years ago (Ga), 700 million years earlier than previously identified (Biggin et al., 2011 and Tarduno et al., 2010). However, this extraordinary claim requires evidence that the zircons have not been remagnetized during the intervening time since their formation. Weiss et al. (2015) argued that such evidence had yet to be provided, a conclusion that we find still firmly holds.

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© 2016 Elsevier B.V. Received 5 July 2016; Accepted 6 July 2016; Available online 19 July 2016.

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70685
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CaltechAUTHORS:20160930-093144792

Related works

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10.1016/j.epsl.2015.07.067 (DOI)
10.1016/j.epsl.2016.06.006 (DOI)

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2016-09-30
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2023-06-01
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