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Chlorine variations in the magma of Soufriere Hills Volcano, Montserrat: Insights from Cl in hornblende and melt inclusions

Abstract:

The Soufrière Hills Volcano in Montserrat erupts a Cl-rich, porphyritic andesite. HCl degassing accompanies eruption and is dependent on the growth rate of the lava dome. The magma contains hornblende phenocrysts that show repetitive zoning in most elements, including Cl. On the basis of the zoning data, (Cl/OH) ratios in the melt, calculated from partitioning data, increase rimward through each zone, indicating that the phenocrysts formed under conditions of varying (Cl/OH)m. An empirical re...

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Publication status:
Published

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Publisher copy:
10.1016/j.gca.2009.06.014

Authors


Journal:
GEOCHIMICA ET COSMOCHIMICA ACTA
Volume:
73
Issue:
19
Pages:
5693-5708
Publication date:
2009-10-01
DOI:
ISSN:
0016-7037
Source identifiers:
184918
Language:
English
Pubs id:
pubs:184918
UUID:
uuid:b666c441-3b05-49ac-ab1a-148bca0bfcf6
Local pid:
pubs:184918
Deposit date:
2012-12-19

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