| 吐哈盆地库姆塔格煤田西山窑组煤层煤相分析 |
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| 引用本文： | 李玉坤,李广,范香莲.吐哈盆地库姆塔格煤田西山窑组煤层煤相分析[J].新疆地质,2019(1):96-101. |
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| 作者姓名： | 李玉坤 李广 范香莲 |
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| 作者单位： | 新疆维吾尔自治区地质矿产勘查开发局第一地质大队 |
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| 摘 要： | 以沉积学、煤岩学和煤相学理论为指导,运用煤相参数,结合宏观、微观煤岩特征分析煤相类型。结果表明:研究区宏观煤岩类型以暗淡型煤为主,显微煤岩类型以微镜惰煤为主,煤田西北部属潮湿-弱覆水环境,东南部属极潮湿-覆水环境;西北部煤层沼泽类型为干燥森林沼泽相,东南部以潮湿森林沼泽相为主,次为干燥森林沼泽相,沉积环境主要为浅沼相。综合分析认为,库姆塔格煤田煤层形成环境为低水位微弱水动力条件下、以潮湿森林沼泽为主、干燥森林沼泽次之的浅沼相,煤岩和煤相分析为聚煤环境分析、煤质评价、煤层对比等提供科学依据。
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| 关 键 词： | 吐哈盆地 沙尔湖凹陷 库姆塔格煤田 西山窑组 煤相 |
Analysis on Coal Facies of Seam in Xishanyao Formation of Kumtag Coalfield in Turpan-Hami Basin,XinJiang |
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| Li Yukun,Li Guang,Fan Xianglian.Analysis on Coal Facies of Seam in Xishanyao Formation of Kumtag Coalfield in Turpan-Hami Basin,XinJiang[J].Xinjiang Geology,2019(1):96-101. |
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| Authors: | Li Yukun Li Guang Fan Xianglian |
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| Institution: | (No.1 Geology survey party,Xinjiang Bureau of Geology and Mineral Resources Explorotion and Development,Changji,Xinjiang,831100,China) |
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| Abstract: | Abstract:Based on the theory of sedimentology,coal petrology and coal petrography,using the coal facies classificationparameter combined with macroscopic and microscopiccoal characteristics,coal facies types have been analyzed.The study results showed thatcoal type by lastre of study area were mainly dull coal,microlithotype were mainly vitrinertite. Through the ratio of vitrinite and inertinite,it can showed that the northwestern coalfield was moist-weak water overlying environment while the southeastern coalfield was very moist-water overlying environment.According to the analysis of coal facies,it is summarized that the swamp typewas dry forest swamp in the northwest while mainly wetforest swamp and secondarily dry forest swamp in the southeast,the sedimentary environment was shallow marsh.Through comprehensive analysis of the results, we conclude that the coal forming environment of Kumtag coalfield was shallow marsh lakemade up by mainly wetforest swamp and secondarily dry forest swamp under low water level with faint water power. The analysis of the coal petrology and coal facies also provided some basis for the analysis of coal forming environment, assessment and the comparison of the seams. |
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| Keywords: | Turpan-Hami Basin Shaerhu sag Kumtag coalfield Xishanyao formation Coal facies |
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