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Modulation of magmatic processes by CO2 flushing

Blundy, Jon
Published in Earth and planetary science letters. 2018, vol. 491, p. 160-171
Abstract Magmatic systems are the engines driving volcanic eruptions and the source of fluids responsible for the formation of porphyry-type ore deposits. Sudden variations of pressure, temperature and volume in magmatic systems can produce unrest, which may culminate in a volcanic eruption and/or the abrupt release of ore-forming fluids. Such variations of the conditions within magmatic systems are commonly ascribed to the injection of new magma from depth. However, as magmas fractionating at depth or rising to the upper crust release CO2-rich fluids, the interaction between carbonic fluids and H2O-rich magmas stored in the upper crust (CO2 flushing), must also be a common process affecting the evolution of subvolcanic magma reservoirs. Here, we investigate the effect of gas injection on the stability and chemical evolution of magmatic systems.
Keywords CO2-flushingEruptionsMineralising fluids
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Other version: http://linkinghub.elsevier.com/retrieve/pii/S0012821X18301742
Research group Petrology and Volcanology
European Commission: FEVER
(ISO format)
CARICCHI, Luca, SHELDRAKE, Thomas Edward, BLUNDY, Jon. Modulation of magmatic processes by CO2 flushing. In: Earth and Planetary Science Letters, 2018, vol. 491, p. 160-171. doi: 10.1016/j.epsl.2018.03.042 https://archive-ouverte.unige.ch/unige:103444

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Deposited on : 2018-04-10

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