Age and Eruption Environment of Volcanic Rock from Woniusi#br#
Formation in Shidian, Western Yunnan Province
HAO Jia-xu 1, ZOU Li-zhi2, CHEN Gang3, HUANG Yong1
(1.Guizhou Geological Survey, Guiyang 550005, China; 2.Guizhou Institute of Geophysical and Geochemical Prospecting, Bureau of
Geology and Mineral Exploration and Development of Guizhou Province, Guiyang 550018, China; 3.114 Geological Party,
Guizhou Bureau of Geology and Mineral Exploration and Development， Zunyi 563009, China)
Abstract：In previous studies on volcanic rock of Woniusi Formation in Shidian region, some researchers have proposed it has close relation with the marine volcanic activity as in Baoshan region, north Yunnan Province. However, the inexistence of sediment strata and characteristics of petrology, geochemistry and geology indicate that the eruption environment is significantly different between the two regions. It is showed that the Woniusi Formation form in continental eruption setting and associated with the continental flood magma in Shidian region. In addition, the age (264 Ma) of volcanic rock from Woniusi Formation and the contact relationship with upper and lower strata suggest the Woniusi Formation might be formed in Early Permian, and these provide new evidence for the formation age of Woniusi Formation.
郝家栩，邹立志，陈刚，黄勇. 滇西施甸地区卧牛寺组火山岩的地质时代及喷发环境[J]. 中国地质调查, 2015, 2(7): 40-44.
HAO Jia-xu, ZOU Li-zhi, CHEN Gang, HUANG Yong. Age and Eruption Environment of Volcanic Rock from Woniusi#br#
Formation in Shidian, Western Yunnan Province. , 2015, 2(7): 40-44.
