Melting and crystallization of andesite from Chilungshan, Northern Taiwan: An experimental Petrological study at atmospheric pressure

Yu Ming Lai, Teh Ching Liu*, Yu Ming Chen, Yoshiyuki Iizuka

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

To investigate whether quartz can be crystallized from the magma at the Chilungshan andesite in Northern Taiwan, melting experiments involving 17 runs were performed at atmospheric pressure. The liquidus temperature was determined to be 1285°C, and the melting interval was estimated to be 193°C. Pagioclase crystallized first at 1285°C, and iron-titanium oxides subsequently crystallized at 1267°C. Quartz and orthopyroxene crystallized together at 1174°C. Finally, clinopyroxene crystallized at 1166°C, and orthopyroxene disappeared at 1155°C. The crystallization of the Chilungshan andesitic melt at atmospheric pressure was successively controlled by plagioclase, iron-titanium oxides, quartz, orthopyroxene, and clinopyroxene. The differentiation trend of the residual melt involved the depletion of aluminum and calcium, but the residual melt became enriched in silicon and potassium. In addition, it became enriched in magnesium, iron, and titanium at the initial stages, which were depleted at the final stages. The study results suggest that quartz grains can be crystallized from the Chilungshan andesitic melt at atmospheric pressure.

原文英語
頁(從 - 到)221-231
頁數11
期刊Quaternary International
349
DOIs
出版狀態已發佈 - 2014 十月 28
對外發佈

ASJC Scopus subject areas

  • 地表過程

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