Silica-rich volcanism in the early solar system dated at 4.565 Ga

Poorna Srinivasan, Daniel R. Dunlap, Carl B. Agee, Meenakshi Wadhwa, Daniel Coleff, Karen Ziegler, Ryan Zeigler, Francis M. McCubbin

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The ranges in chemical composition of ancient achondrite meteorites are key to understanding the diversity and geochemical evolution of planetary building blocks. These achondrites record the first episodes of volcanism and crust formation, the majority of which are basaltic. Here we report data on recently discovered volcanic meteorite Northwest Africa (NWA) 11119, which represents the first, and oldest, silica-rich (andesitic to dacitic) porphyritic extrusive crustal rock with an Al–Mg age of 4564.8 ± 0.3 Ma. This unique rock contains mm-sized vesicles/cavities and phenocrysts that are surrounded by quench melt. Additionally, it possesses the highest modal abundance (30 vol%) of free silica (i.e., tridymite) compared to all known meteorites. NWA 11119 substantially widens the range of volcanic rock compositions produced within the first 2.5–3.5 million years of Solar System history, and provides direct evidence that chemically evolved crustal rocks were forming on planetesimals prior to the assembly of the terrestrial planets.

    Original languageEnglish (US)
    Article number3036
    JournalNature Communications
    Volume9
    Issue number1
    DOIs
    StatePublished - Dec 1 2018

    Fingerprint

    Meteoroids
    Meteorites
    Solar system
    Solar System
    Silicon Dioxide
    solar system
    meteorites
    Rocks
    achondrites
    rocks
    Planetary Evolution
    silicon dioxide
    Planets
    Volcanic rocks
    volcanology
    Chemical analysis
    terrestrial planets
    protoplanets
    crusts
    chemical composition

    ASJC Scopus subject areas

    • Chemistry(all)
    • Biochemistry, Genetics and Molecular Biology(all)
    • Physics and Astronomy(all)

    Cite this

    Srinivasan, P., Dunlap, D. R., Agee, C. B., Wadhwa, M., Coleff, D., Ziegler, K., ... McCubbin, F. M. (2018). Silica-rich volcanism in the early solar system dated at 4.565 Ga. Nature Communications, 9(1), [3036]. https://doi.org/10.1038/s41467-018-05501-0

    Silica-rich volcanism in the early solar system dated at 4.565 Ga. / Srinivasan, Poorna; Dunlap, Daniel R.; Agee, Carl B.; Wadhwa, Meenakshi; Coleff, Daniel; Ziegler, Karen; Zeigler, Ryan; McCubbin, Francis M.

    In: Nature Communications, Vol. 9, No. 1, 3036, 01.12.2018.

    Research output: Contribution to journalArticle

    Srinivasan, P, Dunlap, DR, Agee, CB, Wadhwa, M, Coleff, D, Ziegler, K, Zeigler, R & McCubbin, FM 2018, 'Silica-rich volcanism in the early solar system dated at 4.565 Ga' Nature Communications, vol. 9, no. 1, 3036. https://doi.org/10.1038/s41467-018-05501-0
    Srinivasan, Poorna ; Dunlap, Daniel R. ; Agee, Carl B. ; Wadhwa, Meenakshi ; Coleff, Daniel ; Ziegler, Karen ; Zeigler, Ryan ; McCubbin, Francis M. / Silica-rich volcanism in the early solar system dated at 4.565 Ga. In: Nature Communications. 2018 ; Vol. 9, No. 1.
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