Early formation of planetary building blocks inferred from Pb isotopic ages of chondrules.

Bollard, J. (author)

Connelly, J.N. (author)

Whitehouse, Martin J., 1962- (author): Naturhistoriska riksmuseet,Enheten för geovetenskap,Nordsim

Pringle, E.A. (author)

Bonal, E.A. (author)

Jørgensen, J.K. (author)

Nordlund, Å. (author)

Moynier, F. (author)

Bizzarro, M. (author)

(creator_code:org_t)

American Association for the Advancement of Science (AAAS), 2017
2017
English.
In: Science Advances. - : American Association for the Advancement of Science (AAAS). - 2375-2548. ; 3

Related links:: https://doi.org/10.1...; show more...; http://advances.scie...; https://nrm.diva-por... (primary) (Raw object); https://doi.org/10.1...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Bollard, J.; Connelly, J.N.; Whitehouse, Mart ...; Pringle, E.A.; Bonal, E.A.; Jørgensen, J.K.; show more...; Nordlund, Å.; Moynier, F.; Bizzarro, M.; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Geochemistry

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