Carboniferous Tianshan igneous megaprovince and mantle plume
Carboniferous Tianshan igneous megaprovince and mantle plume
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发表时间：
2004
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通讯作者：
Xia Linzuo;Xia Zuchun;Xu Xueyi;Li Xiangmin;M. Zhongping;Wang Lishe
中科院分区：
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作者：
Xia Linzuo;Xia Zuchun;Xu Xueyi;Li Xiangmin;M. Zhongping;Wang Lishe
Carboniferous post-collision rift volcanism produced an igneous megaprovince covering an area of about 1.5 million km2 in the Tianshan orogenic belt in northwestern China(Central Asia). The volcanic successions consist predominantly of basaltic lavas with subordinate intermediate and acid lavas and pyroclastic rocks. The chemical and isotopic arrays formed by basalts indicate mixing of components from two distinct source regions. One component is thought to have been derived from the lithospheric mantle, and the other was derived from an asthenospheric source similar to that of Hawaii, Iceland and Reunion basalts. It is evident that the formation of the igneous megaprovince is related to mantle plume activity.
