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Quartz zoning and the pre-eruptive evolution of the similar to 340-ka Whakamaru magma systems, New Zealand

Abstract:

Cathodoluminescence (CL) zoning in quartz crystals from rhyolitic pumices in two ignimbrite members of the ~340-ka Whakamaru super-eruption deposits, Taupo Volcanic Zone, New Zealand, is investigated in conjunction with the analysis of Ti concentration in quartz to reconstruct the history of changing magma chamber conditions and to elucidate the eruption-triggering processes. CL intensity images are taken as a proxy for Ti concentration and thus temperature and/or pressure and/or compositiona...

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Publication status:
Published

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Publisher copy:
10.1007/s00410-011-0660-1

Authors


Matthews, NE More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Wilson, CJN More by this author
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Journal:
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
Volume:
163
Issue:
1
Pages:
87-107
Publication date:
2012-01-05
DOI:
EISSN:
1432-0967
ISSN:
0010-7999
URN:
uuid:6351599c-a570-4bf1-959f-8171e9408741
Source identifiers:
245951
Local pid:
pubs:245951

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