期刊
EARTH AND PLANETARY SCIENCE LETTERS
卷 301, 期 1-2, 页码 345-352出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.epsl.2010.11.017
关键词
volcano; degassing; melt inclusion; volatiles
资金
- NERC [NE/F004222/1]
- NERC [NE/F004222/1] Funding Source: UKRI
- Natural Environment Research Council [NE/F004222/1] Funding Source: researchfish
Magmas progressively exsolve volatiles as they ascend towards the Earth's surface, such that their volatile content is a function of pressure. Water and carbon dioxide concentrations measured in melt inclusions from degassing volcanoes rarely coincide with modelled degassing trends. I show that observed melt inclusion trends can be reproduced through mixing of magmas, either during convection within the volcanic conduit, or within a subterranean magma reservoir. No fluxing gas phase or post-entrapment loss of water need be invoked. A permeable network allowing gas transport is still required to avoid fragmentation of magma at shallow depths. (C) 2010 Elsevier B.V. All rights reserved.
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