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New constraints on Ti diffusion in quartz and the priming of silicic volcanic eruptions

Author

Listed:
  • Andreas Audétat

    (University of Bayreuth)

  • Axel K. Schmitt

    (Heidelberg University
    Curtin University)

  • Raphael Njul

    (University of Bayreuth)

  • Megan Saalfeld

    (Montana State University)

  • Anastassia Borisova

    (University of Toulouse, CNRS)

  • Yongjun Lu

    (Industry Regulation and Safety
    University of Western Australia)

Abstract

Titanium diffusion profiles in quartz crystals are widely applied to constrain the duration of magmatic processes. However, experimentally determined Ti diffusion coefficients in quartz diverge by three orders of magnitude. To rectify this problem we derive Ti diffusion coefficients from natural quartz phenocrysts from the 1991 eruption at Mt. Pinatubo, by combining U-Th ages of small (15–40 µm long) zircon inclusions with Ti diffusion profiles measured at nearby growth zone contacts in the same quartz crystals. Application of the obtained data to quartz crystals with Ti-rich rims from thirteen silicic volcanic tuffs worldwide suggests that the magmas erupted years to thousands of years after magma chamber rejuvenation, with the priming time increasing with magma volume and decreasing temperature. Here we show that the time scales involved in the generation of silicic volcanic eruptions are much longer than originally thought.

Suggested Citation

  • Andreas Audétat & Axel K. Schmitt & Raphael Njul & Megan Saalfeld & Anastassia Borisova & Yongjun Lu, 2023. "New constraints on Ti diffusion in quartz and the priming of silicic volcanic eruptions," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39912-5
    DOI: 10.1038/s41467-023-39912-5
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    References listed on IDEAS

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    1. Alain Burgisser & George W. Bergantz, 2011. "A rapid mechanism to remobilize and homogenize highly crystalline magma bodies," Nature, Nature, vol. 471(7337), pages 212-215, March.
    2. Kari M. Cooper & Adam J. R. Kent, 2014. "Correction: Corrigendum: Rapid remobilization of magmatic crystals kept in cold storage," Nature, Nature, vol. 508(7497), pages 554-554, April.
    3. Kari M. Cooper & Adam J. R. Kent, 2014. "Rapid remobilization of magmatic crystals kept in cold storage," Nature, Nature, vol. 506(7489), pages 480-483, February.
    4. Michael C Jollands, 2020. "Assessing analytical convolution effects in diffusion studies: Applications to experimental and natural diffusion profiles," PLOS ONE, Public Library of Science, vol. 15(11), pages 1-14, November.
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