دورية أكاديمية
أعرض في EDS

Direct age constraints on the magnetism of Jack Hills zircon.

التفاصيل البيبلوغرافية
العنوان: Direct age constraints on the magnetism of Jack Hills zircon.
المؤلفون: Taylor RJM; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK., Reddy SM; School of Earth and Planetary Sciences, Curtin University, Bentley, WA 6102, Australia.; Geoscience Atom Probe Facility, John de Laeter Centre, Curtin University, Bentley, WA 6102, Australia., Saxey DW; School of Earth and Planetary Sciences, Curtin University, Bentley, WA 6102, Australia.; Geoscience Atom Probe Facility, John de Laeter Centre, Curtin University, Bentley, WA 6102, Australia., Rickard WDA; School of Earth and Planetary Sciences, Curtin University, Bentley, WA 6102, Australia.; Geoscience Atom Probe Facility, John de Laeter Centre, Curtin University, Bentley, WA 6102, Australia., Tang F; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK., Borlina CS; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA., Fu RR; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA., Weiss BP; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA., Bagot P; Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK., Williams HM; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK., Harrison RJ; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK.
المصدر: Science advances [Sci Adv] 2023 Jan 06; Vol. 9 (1), pp. eadd1511. Date of Electronic Publication: 2023 Jan 06.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 101653440 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2375-2548 (Electronic) Linking ISSN: 23752548 NLM ISO Abbreviation: Sci Adv Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Original Publication: Washington, DC : American Association for the Advancement of Science, [2015]-
مستخلص: A potential record of Earth's magnetic field going back 4.2 billion years (Ga) ago is carried by magnetite inclusions in zircon grains from the Jack Hills. This magnetite may be secondary in nature, however, meaning that the magnetic record is much younger than the zircon crystallization age. Here, we use atom probe tomography to show that Pb-bearing nanoclusters in magnetite-bearing Jack Hills zircons formed during two discrete events at 3.4 and <2 Ga. The older population of clusters contains no detectable Fe, whereas roughly half of the younger population of clusters is Fe bearing. This result shows that the Fe required to form secondary magnetite entered the zircon sometime after 3.4 Ga and that remobilization of Pb and Fe during an annealing event occurred more than 1 Ga after deposition of the Jack Hills sediment at 3 Ga. The ability to date Fe mobility linked to secondary magnetite formation provides new possibilities to improve our knowledge of the Archean geodynamo.
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تواريخ الأحداث: Date Created: 20230106 Date Completed: 20230109 Latest Revision: 20230113
رمز التحديث: 20230113
مُعرف محوري في PubMed: PMC9821853
DOI: 10.1126/sciadv.add1511
PMID: 36608136
قاعدة البيانات: MEDLINE
الوصف
تدمد:2375-2548
DOI:10.1126/sciadv.add1511