Abstract:Volcanic rocks in the Upper Triassic Xiaodingxi Formation in the Shiden-Tue area belong to the Triassic 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 volcanic rocks are composed dominantly of andesite with subordinate basalt, belonging to the calc-alkaline series, and formed in the island-arc tectonic environment.
参考文献
相似文献
引证文献
引用本文
李 玫. 云南省兰坪县石登—兔峨地区火山岩岩石学特征[J]. 中国地质, 2004, 31(1): 64-69. LI Mei. Petrological characteristic of volcanic rocks in the Shiden-Tu’e area, Lanping County, Yunnan[J]. Geology in China, 2004, 31(1): 64-69(in Chinese with English abstract).