Origin of primitive ultra-calcic arc melts at crustal conditions — Experimental evidence on the La Sommata basalt, Vulcano, Aeolian Islands
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- 作者：Giovanni Lanzoa ; b ; Ida Di Carloc ; d ; e ; Michel Pichavantc ; d ; e ; pichavan@cnrs-orleans.fr" class="auth_mail" title="E-mail the corresponding author ; Silvio G. Rotoloa ; b ; Bruno Scailletc ; d ; e
- 关键词：Primitive arc magmas ; Ultra-calcic ; Experiments ; Phase equilibria ; Vulcano ; Aeolian arc
- 刊名：Journal of Volcanology and Geothermal Research
- 出版年：2016
- 出版时间：15 July 2016
- 年：2016
- 卷：321
- 期：Complete
- 页码：85-101
- 全文大小：1908 K
文摘
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The experimental phase relations of a natural ultra-calcic arc basalt have been determined
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Results are identical in critical aspects to those obtained previously on a synthetic ultra-calcic arc composition
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Generation of primitive ultra-calcic melt leaves a clinopyroxene-rich residual source, either wehrlite or clinopyroxenite
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Ultra-calcic arc compositions at Vulcano are generated at crustal pressures
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They represent melts produced by the interaction between primary and clinopyroxene-rich wall-rocks