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

DOI zum Zitieren der Version auf EPub Bayreuth:
URN to cite this document: urn:nbn:de:bvb:703-epub-7308-8

Title data

Audétat, Andreas ; Schmitt, Axel K. ; Njul, Raphael ; Saalfeld, Megan ; Borisova, Anastassia ; Lu, Yongjun:
New constraints on Ti diffusion in quartz and the priming of silicic volcanic eruptions.
In: Nature Communications. Vol. 14 (2023) Issue 1 . - 4277.
ISSN 2041-1723
DOI der Verlagsversion:

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Project financing: Deutsche Forschungsgemeinschaft


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.

Further data

Item Type: Article in a journal
DDC Subjects: 500 Science > 550 Earth sciences, geology
Institutions of the University: Research Institutions > Central research institutes > Bavarian Research Institute of Experimental Geochemistry and Geophysics - BGI
Research Institutions
Research Institutions > Central research institutes
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-7308-8
Date Deposited: 10 Nov 2023 06:50
Last Modified: 10 Nov 2023 07:07


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