Petrogenesis and tectonic settings of volcanic rocks of the Ashele Cu-Zn deposit in southern Altay, Xinjiang, Northwest China: Insights from zircon U-Pb geochronology, geochemistry and Sr-Nd isotopes
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- 作者：Yufeng Wua ; Fuquan Yanga ; yangfuquan66@sina.com" class="auth_mail" title="E-mail the corresponding author ; Feng Liua ; Xinxia Genga ; Qiang Lia ; Jiahao Zhengb
- 关键词：Volcanic rocks ; Zircon U&ndash ; Pb dating ; Geochemistry ; Ashele Formation ; Ridge subduction
- 刊名：Journal of Asian Earth Sciences
- 出版年：2015
- 出版时间：15 November 2015
- 年：2015
- 卷：112
- 期：Complete
- 页码：60-73
- 全文大小：4952 K
文摘
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The dacite of the Ashele Formation formed approximately 403 Ma ago.
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The formation age of the Ashele Formation volcanic rocks is 403–375 Ma.
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The dacite with high Mg# values showing a sanukitoids affinity.
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The basalt mainly derived from an N-MORB-type depleted asthenospheric mantle in an island arc setting.
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The dacites and basalts of Ashele Formation were associated with ridge subduction.