Geochemical characteristics and microbial populations of Neogene brown coal from Zhaotong Basin, China |
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| Authors: | Aikuan Wang Yong Qin Fengjuan Lan |
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| Institution: | 1. School of Resources and Geoscience, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
2. Key Laboratory of CBM Resources and Pooling Process, Ministry of Education of China, Xuzhou, 221116, Jiangsu, China
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| Abstract: | For the first time in China, a preliminary survey of geochemical characteristics and microbial populations of Neogene brown coal from Zhaotong Basin in Yunnan province, China was conducted to provide a basis for an understanding of the generation of biogenic coal-bed methane in this basin. Coals in this region consist of soft brown coal with lower maturity and good bioactivity, as determined by coal petrologic measurements. Soluble organic matter in coal exhibits the characteristics of unsaturated humic hydrocarbon source rock. Organics in coal were generally associated with higher plants and lower grade aquatic organisms. The bacterial community was dominated by fermentation bacteria, and sulfate-reducing bacteria were relatively rare. |
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