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篇目详细内容 |
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【篇名】 |
The allochthonous genesis model about the extra-thick and high-quality coalbed in Xianfeng basin, Yunnan Province, China |
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【刊名】 |
Frontiers of Earth Science in China |
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【刊名缩写】 |
Front. Earth Sci. China |
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【ISSN】 |
1673-7385 |
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【EISSN】 |
1673-7490 |
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【DOI】 |
10.1007/s11707-007-0013-6 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2007 |
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【卷期】 |
1
卷1期 |
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【页码】 |
97-105
页,共
9
页 |
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【作者】 |
WU Chonglong;
LI Shaohu;
WANG Genfa;
LIU Gang;
KONG Chunfang;
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【关键词】 |
coal for liquefaction; extra-thick coalbed; continental fault basin; coal genesis; allochthonous genesis model; Xianfeng basin; China |
【摘要】 |
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An extra-thick high-quality brown coal was found to have accumulated in the Xianfeng basin in Yunnan Province, China. There are also abundant sedimentary marks of allochthonous genesis in the extra-thick coalbeds. These genesis indicators reveal a new submodel about allochthonous accumulation, which is: the long-distance river transportation of detrital plant and inorganic matter→the sedimentation of detrital plant fan delta+the hypautochthony accumulation of local lakeshore swamp peat→the autochthonous accumulation of local lacustrine peat+the sedimentation of fine inorganic matter→the mixing and transportation by flood current or weak storm flow or underwater gravity flow→the mechanical differentiation and their resedimentation between detrital plant and inorganic matter. This submodel can be called “the double accumulation of lacustrine detrital plant fan delta and underwater gravity flow” or “Xianfeng submodel”, which supplements the “allochthonous-hypautochthony lacustrine combination accumulation model” of the extrathick coalbeds. The combination accumulation model is based on the Fuxin submodel and Fushun submodel in the Chinese Mesozoic and Cenozoic intarcontinental fault basin. |
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