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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