摘要
滇东北地区煤的变质程度具有与区内构造-成矿亚带一致的分带变化规律,其中以金牛厂-矿山厂亚带煤的变质程度最高,往北变质程度逐渐降低,往南变质程度则快速降低。同时探讨了其成因,认为峨眉山玄武岩浆的喷溢活动对区内煤变质程度的整体提高起着重要作用,而煤变质的分带性则可能与热液(水)变质作用有关。
<Abstrcat>In Northeastern Yunnan, the change of the metamorphic grade of coal has the same rules as that of sub-tectonic--metallogenic belt: the metamorphic grade of coal occurred in Jinniuchang——Kuangshanshang sub- belt is the highest, to north ,it weakened gradually and to south it weakened immediately. At the same time its genesis is discussed.
出处
《矿产与地质》
2005年第3期271-275,共5页
Mineral Resources and Geology
