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Showing 1–3 of 3 results
Advanced filters: Author: Alain Burgisser Clear advanced filters

  • This study shows that a dynamic two-stage model can unify a wide range of apparently contradictory observations from both large plutonic bodies and volcanic systems by a mechanism of rapid remobilization, or 'unzipping', of highly viscous crystal-rich mushes. This remobilization can lead to rapid overturn and produce the observed juxtaposition of magmatic materials with very disparate ages and complex chemical zoning. The agreement between calculated and observed unzipping rates for historical eruptions at Pinatubo and Montserrat demonstrates the potentially wide applicability of the model.

    • Alain Burgisser
    • George W. Bergantz
    Research
    Nature
    Volume: 471, P: 212-215

  • Pyroclastic density currents generate a basal air cushion that reduces friction with the ground, reveal laboratory experiments. This explains their ability to travel rapidly over large distances from their volcanic source.

    • Alain Burgisser
    News & Views
    Nature Geoscience
    Volume: 12, P: 311-312

  • A coupled chemical–physical model of conduit flow shows that the oxidation state of an ascending magma is strongly dependent on both the composition and amount of gas in the reservoir.

    • Alain Burgisser
    • Bruno Scaillet
    Research
    Nature
    Volume: 445, P: 194-197