Contrasting timescales of crystallization and magma storage beneath the Aleutian Island arc
نویسندگان
چکیده
منابع مشابه
Timescales of Quartz Crystallization and the Longevity of the Bishop Giant Magma Body
Supereruptions violently transfer huge amounts (100 s-1000 s km(3)) of magma to the surface in a matter of days and testify to the existence of giant pools of magma at depth. The longevity of these giant magma bodies is of significant scientific and societal interest. Radiometric data on whole rocks, glasses, feldspar and zircon crystals have been used to suggest that the Bishop Tuff giant magm...
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[1] A recent prospective on the Yellowstone Caldera discounts its explosive potential based on inferences from tomographic studies which suggests a high degree of crystallization of the underlying magma body. In this study, we show that many of the first teleseismic P-wave arrivals observed at seismic stations on the edge of the caldera did not travel through the magma body but have taken longe...
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There is now su ̄ cient information to attempt an integrated model for melt generation, transfer and storage beneath subduction-zone volcanoes. Fluid release from the subducting oceanic crust into the mantle wedge may occur over a period ranging from a few hundred kyr, to as little as less than 1 kyr, before eruption. This supports models in which ®uid addition is closely linked to partial melti...
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ژورنال
عنوان ژورنال: Earth and Planetary Science Letters
سال: 2005
ISSN: 0012-821X
DOI: 10.1016/j.epsl.2005.05.002