Bimodal magmatism produced by progressively inhibited crustal assimilation
نویسندگان
چکیده
منابع مشابه
A Metamodel for Crustal Magmatism: Phase Equilibria of Giant Ignimbrites
Diverse explanations exist for the large-volume catastrophic eruptions that formed the Bishop Tuff of Long Valley in eastern California, the Bandelier Tuff in New Mexico, and the tuffs of Yellowstone, Montana, USA.These eruptions are among the largest on Earth within the last 2 Myr. A common factor in recently proposed petrogenetic scenarios for each system is multistage processing, in which a ...
متن کاملShallow-level Crustal Assimilation and Hybrid Fluid
1 Géosciences Environnement Toulouse, Observatoire Midi-Pyrénées, Université Toulouse III/CNRS/IRD/CNES, GET UMR 5563, 14 Avenue E. Belin, 31400 Toulouse, France ([email protected]) 2 Geological Department, Moscow State University, Vorobevu Gory, 119899, Moscow, Russia 3 Université d’Orléans CNRS/INSU ISTO, UMR 7327 Orléans, France ([email protected]) 4 Museum Geologi, Pus...
متن کاملLunar floor-fractured craters: Classification, distribution, origin and implications for magmatism and shallow crustal structure
[1] Floor-Fractured Craters (FFCs) are a class of lunar craters characterized by anomalously shallow floors cut by radial, concentric, and/or polygonal fractures; additional interior features are moats, ridges, and patches of mare material. Two formation mechanisms have been hypothesized—floor uplift in response to shallow magmatic intrusion and sill formation, and floor shallowing in response ...
متن کاملReply to Gualda & Ghiorso Comment on ‘A Metamodel for Crustal Magmatism: Phase Equilibria of Giant Ignimbrites’
We welcome the opportunity to clarify issues raised by Gualda & Ghiorso (G&G, hereafter) on our 2010 paper, ‘A metamodel for crustal magmatism: phase equilibria of giant ignimbrites’. Voluminous (V 100^1000 km) explosive eruption of silicic magma, accompanied by eruption columns that may empty into the stratosphere, has environmental consequences of planetary significance and represents an impo...
متن کاملCrustal contributions to arc magmatism in the Andes of Central Chile
Fifteen andesite-dacite stratovolcanoes on the volcanic front of a single segment of the Andean arc show along-arc changes in isotopic and elemental ratios that demonstrate large crustal contributions to magma genesis. All 15 centers lie 90 km above the Benioff zone and 280 _+ 20 km from the trench axis. Rate and geometry of subduction and composition and age of subducted sediments and seafloor...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2014
ISSN: 2041-1723
DOI: 10.1038/ncomms5199