首页|期刊导航|中国地球化学学报(英文版)|A study on Emei mantle plume activity and the origin of high-As coal in southwestern Guizhou Province
中国地球化学学报(英文版)2006，Vol.25Issue(3)：238-244,7.
A study on Emei mantle plume activity and the origin of high-As coal in southwestern Guizhou Province
A study on Emei mantle plume activity and the origin of high-As coal in southwestern Guizhou Province
摘要
Abstract
The Emei mantle plume activity lasted for a long period of time ranging from the whole Late Paleozoic to Mesozoic. The large-scale Emeishan basalt eruption marked the summit period of mafic magmatic activity between Early and Late Permian. Lots of Au, As, Hg, Sb and other trace elements, in the form of extreme dispersion, found their way into coal seams of the Longtan Formation in the transitional zone between platform facies and slope facies at the margin of the platform around the areas of Xingyi, Anlong, Xingren and Zhenfeng in southwestern Guizhou Province. During the Yanshanian Emei mantle plume activity, large amounts of ore-forming elements such as As, Au, Hg, Sb, etc. were extracted from the Emeishan basalt and coal seams by hydrothermal solutions, followed by their mobilization and transport. When the hydrothermal solutions passed through the coal measures of the Longtan Formation, the element As was enriched locally to form high-As coal.The intensive Emei plume activity provided the material source of As and dynamic source for the formation of high-As coal in southwestern Guizhou Province.关键词
Emei mantle plume activity/high-As coal/origin/southwestern Guizhou ProvinceKey words
Emei mantle plume activity/high-As coal/origin/southwestern Guizhou Province分类
天文与地球科学引用本文复制引用
NIE Aiguo,XIE Hong..A study on Emei mantle plume activity and the origin of high-As coal in southwestern Guizhou Province[J].中国地球化学学报(英文版),2006,25(3):238-244,7.基金项目
The research project was financially supported by the Foundation of Visiting Scholars under the Ministry of Education,Key Laboratory for the Controlling Engineering of Southwestern Resource Developmerct,Environment and Calamity,Chongqing University (Grant No.3[2001]) Document issued by the Department of Education and Technology （Grant No.3[2001]）
the Scientific Research Project of Guizhou Provincial Department of Education (Grant No.Qian Jiao Ke 2001016). （Grant No.Qian Jiao Ke 2001016）
