石炭井矿区是西北重要的炼、配焦煤供应基地之一，由于生产年代长远，矿区内已面临着煤炭资源枯竭的重大问题。
Shitanjing mining area is the one of important provision base of coking co al and blending coking coal in Northwestern China.
四川东部石炭系压裂酸化后的产量与井的地质条件有密切关系。
The production of fracturing acidizing of carboniferous system in east Sichuan has a close relation to geologic condition.
石炭纪牛井山蛇绿混杂岩出露于云南省西南部双江县牛井山—耿马县勐永一带，勐永以北与铜厂街地区的蛇绿混杂岩相接。
Carboniferous Nujinshan ophiolite melange is situated from Nujinshan to Mengyong area, where is dominated by Shuangjiang County and Gengma County respectively, southwestern Yunnan Province.
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