Detrital magnetite and chromite in Jack Hills quartzite cobbles: Further evidence for the preservation of primary magnetizations and new insights into sediment provenance
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- 作者：Matthew S. Darea ; John A. Tardunoa ; b ; 1 ; john.tarduno@rochester.edu" class="auth_mail" title="E-mail the corresponding author ; Richard K. Bonoa ; Rory D. Cottrella ; James S. Beardc ; Kenneth P. Kodamad
- 关键词：geodynamo ; paleointensity ; Jack Hills ; detrital zircons ; Hadean Earth ; single crystal paleomagnetism
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 October 2016
- 年：2016
- 卷：451
- 期：Complete
- 页码：298-314
- 全文大小：6018 K
文摘
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Two labs report magnetizations surviving peak metamorphism in Jack Hills sediments.
These data support zircon magnetizations as records of a Hadean geodynamo.
Cr–Fe spinels suggest a layered intrusive source distinct from that of the zircons.