| 柴达木盆地北缘侏罗系含煤研究 |
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| 引用本文： | 杨德寿,范文科,林文良.柴达木盆地北缘侏罗系含煤研究[J].中国煤炭地质,2011(12):4-10. |
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| 作者姓名： | 杨德寿 范文科 林文良 |
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| 作者单位： | 青海煤炭地质勘查院,青海西宁810001 |
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| 摘 要： | 柴达木盆地北缘从西至东分布有格斯煤田、塞什腾煤田、鱼卡煤田、全吉煤田、德令哈煤田以及乌兰煤田,延展长度约800km。各含煤盆地的分布、地层、岩性、含煤性、岩相古地理特征均存在较大的差异,综合分析后可将柴北缘侏罗系含煤地层划分为西、中、东三段,中、东段进一步划分为北、中、南三个条带。区内含煤地层为侏罗系下统小煤沟组、中统大煤沟组、石门沟组,东段和西段下侏罗统发育,在中段则局部发育,中、东段的北、南两个条带下侏罗统发育不全,中条带下侏罗统发育较全;中侏罗统全区普遍发育;含煤性总体表现为西段较差,中段较好,南、北条带较差,中条带较好。探讨煤系赋存规律,为寻找隐覆的含煤区提供理论依据,对于指导柴北缘地区的预测找煤和资源勘查具有重要意义。
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| 关 键 词： | 柴北缘 侏罗系 含煤地层 分布与区划 含煤性 |
A Study on Jurassic System in Northern Qaidam Basin |
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| Yang Deshou,Fan Wenke and Lin Wenliang.A Study on Jurassic System in Northern Qaidam Basin[J].Coal Geology of China,2011(12):4-10. |
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| Authors: | Yang Deshou Fan Wenke and Lin Wenliang |
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| Institution: | (Qinghai Coal Geological Exploration Institute,Xining,Qinghai 810001) |
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| Abstract: | From west to east,in the northern Qaidam Basin have Gus,Sesten,Iqe,Quanji,Delingha and Ulan coalfields stretching about 800km.The distribution,strata,lithology,coal-bearing property,lithofacies and paleogeography of each coal-bearing basin have existed rather large differences.After overall analysis,the Jurassic coal-bearing strata can be partitioned into west,central and east three sectors,the later two can be further subdivided into north,central and south three belts.Coal-bearing strata in the area have lower Jurassic Xiaomeigou Formation,middle Jurassic Dameigou Formation,Shimengou Formation.Lower Jurassic Series was well developed in east and west sectors,locally developed in the central sector;north and south belts in central and east sectors have defective Lower Jurassic Series developed,while well developed in central belt;Middle Jurassic Series was generally developed in the whole area.In the mass,coal-bearing property is rather poor in west sector,better in middle sector;south and north belts rather poor,central belt better.To probe into coal measures hosting pattern,provide theoretical basis for covered coal-bearing area looking have important significance to coal prediction and resource exploration in northern Qaidam Basin. |
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| Keywords: | northern Qaidam Basin Jurassic System coal-bearing strata distribution and partition coal-bearing property |
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