滇西施甸地区二叠纪卧牛寺组大陆溢流玄武岩的发现

The discovery of terrestrial extrusive basalt of Permian Woniusi Formation in Shidian area, western Yunnan Province

Geological Surveying Academy of Guizhou Province, Guiyang 550005, Guizhou, China;2. Wuhan University of Technology, Wuhan 430070, Hubei, China

摘要: 施甸地区的卧牛寺组玄武岩分布广泛。通过近年的野外工作，发现施甸地区的卧牛寺组玄武岩中缺乏沉积夹层，其岩石学特征和地球化学特征均与峨眉山玄武岩相似，具有大陆溢流相喷发的特点。
- 大陆溢流玄武岩 /
- 卧牛寺组 /
- 二叠纪 /
- 滇西施甸地区
Abstract: The basalt of Woniusi Formation is distributed extensively in Shidian area, Yunnan Province. It was thought previously that this basalt belonged to explosive littoral-neritic facies. During the field work in recent years, the authors found that sedimentary intercalations are missing in basalt of Woniusi Formation. And that the basalt is similar to Emei Shan basalts in petrology and geochemistry and has some characteristics of terrestrial extrusive facies.
- terrestrial extrusive basalt /
- Woniusi Formation /
- Permian /
- Shidian area, western Yunnan