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Journal Articles American Mineralogist Year : 2016

Experimental simulation of bubble nucleation and magma ascent in basaltic systems : implications for Stromboli volcano.

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Abstract

The ascent of H2O- and HO-CO2-bearing basaltic melts from the deeper to the shallower part of the Stromboli magmatic system and their vesiculation were simulated from decompression experiments. A well-studied “golden” pumice produced during an intermediate to a large-scale paroxysm was used as starting material. Volatile-bearing glasses were synthesized at an oxygen fugacity (fO2) ranging from NNO–1.4 to +0.9, 1200°C and 200 MPa. The resulting crystal and bubble-free glasses were then isothermally (1200°C) decompressed to final pressures Pf ranging between 200 and 25 MPa, at a linear ascent rate of 1.5 m/s (or 39 kPa/s) prior to be rapidly quenched.
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insu-01321433 , version 1 (21-04-2021)

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Nolwenn Le Gall, Michel Pichavant. Experimental simulation of bubble nucleation and magma ascent in basaltic systems : implications for Stromboli volcano.. American Mineralogist, 2016, 101, pp.1967-1985. ⟨10.2138/am-2016-5639⟩. ⟨insu-01321433⟩
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