Title: Petrological characteristic of volcanic rocks in the Shiden-Tu’e area,Lanping County,Yunnan
Abstract: Volcanic rocks in the Upper Triassic Xiaodingxi Formation in the Shiden-Tue area belong to the Tri - assic volcanic belt along the banks of the Lancang River in western Yunnan.The author has made a systematical and comprehensive study of the petrographic,petrochemical and geochemical characteristics of the volcanic rocks and determines the tectonic environment of these rocks from a theoretical angle.The study shows that these vol - canic rocks are composed dominantly of andesite with subordinate basalt,belonging to the calc-alkaline series,and formed in the island-arc tectonic environment.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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