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Early formation of planetary building blocks inferred from Pb isotopic ages of chondrules.
Swedish Museum of Natural History, Department of Geology. (Nordsim)ORCID iD: 0000-0003-2227-577X
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2017 (English)In: Science Advances, ISSN 2375-2548, Vol. 3, e1700407Article in journal (Refereed) Published
Abstract [en]

The most abundant components of primitive meteorites (chondrites) are millimeter-sized glassy spherical chondrules formed by transient melting events in the solar protoplanetary disk. Using Pb-Pb dates of 22 individual chondrules, we show that primary production of chondrules in the early solar system was restricted to the first million years after the formation of the Sun and that these existing chondrules were recycled for the remaining lifetime of the protoplanetary disk. This finding is consistent with a primary chondrule formation episode during the early high-mass accretion phase of the protoplanetary disk that transitions into a longer period of chondrule reworking. An abundance of chondrules at early times provides the precursor material required to drive the efficient and rapid formation of planetary objects via chondrule accretion.

Place, publisher, year, edition, pages
2017. Vol. 3, e1700407
National Category
Geochemistry
Research subject
The changing Earth
Identifiers
URN: urn:nbn:se:nrm:diva-2531DOI: 10.1126/sciadv.1700407OAI: oai:DiVA.org:nrm-2531DiVA: diva2:1162117
Funder
Knut and Alice Wallenberg Foundation, 2012.0097
Available from: 2017-12-03 Created: 2017-12-03 Last updated: 2017-12-04Bibliographically approved

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Publisher's full texthttp://advances.sciencemag.org/content/3/8/e1700407.full

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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