| 四川省晚三叠世含煤地层层序地层及聚煤特征 |
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| 引用本文： | 李英娇,梁万林,邵龙义,徐锡惠,佟鑫. 四川省晚三叠世含煤地层层序地层及聚煤特征[J]. 中国煤炭地质, 2011, 0(8): 32-37 |
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| 作者姓名： | 李英娇 梁万林 邵龙义 徐锡惠 佟鑫 |
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| 作者单位： | 中国矿业大学;四川省煤田地质局; |
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| 基金项目： | 国土资源大调查(1212010633901); 国家科技重大专项(2011ZX05009-002)项目共同资助 |
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| 摘 要： | 四川盆地晚三叠世含煤地层为一套陆相含煤地层,根据区域性构造不整合面、下切谷充填砂岩底部冲刷面、地层颜色突变面可划分为4个层序,其中层序Ⅰ对应小塘子组,层序Ⅱ对应须家河组一段和二段,层序Ⅲ对应须家河组三段和四段,层序Ⅳ对应须家河组五段和六段。每个层序可划分出相应的低位体系域（LST）、湖侵体系域（TST）和高位体系域（HST）。层序Ⅲ和层序Ⅱ含煤性最好,层序Ⅰ含煤性最差。层序格架对含煤性、煤层分布和发育具有明显的控制作用,湖侵体系域晚期及高位体系域早期主要为滨岸沼泽和分流间湾环境,相对较快的湖平面上升速率为泥炭堆积提供持续增加的可容空间,有利于厚煤层的形成。
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| 关 键 词： | 四川盆地 晚三叠世 层序地层 聚煤规律 |
Late Triassic Coal-bearing Strata Sequence Stratigraphy and Coal Accumulation Characteristics in Sichuan Province |
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| Li Yingjiao,Liang Wanlin,Shao Longyi,Xu Xihui , Tong Xin,Beijing ,.Sichuan Bureau of Coal Geological Exploration,Chengdu,Sichuan ). Late Triassic Coal-bearing Strata Sequence Stratigraphy and Coal Accumulation Characteristics in Sichuan Province[J]. Coal Geology of China, 2011, 0(8): 32-37 |
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| Authors: | Li Yingjiao Liang Wanlin Shao Longyi Xu Xihui Tong Xin Beijing .Sichuan Bureau of Coal Geological Exploration Chengdu Sichuan ) |
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| Affiliation: | Li Yingjiao1,Liang Wanlin2,Shao Longyi1,Xu Xihui2 and Tong Xin1(1.China University of Mining and Technology(Beijing),Beijing 100083,2.Sichuan Bureau of Coal Geological Exploration,Chengdu,Sichuan 610072) |
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| Abstract: | The Upper Triassic Series is a set of coal-bearing strata,based on regional structural unconformity interface,incised valley filling sandstone bottom scouring face,stratum color abrupt change face can be divided into 4 sequences.In which,the sequence I corresponds to Xiaotangzi Formation,sequence II to first and second members of Xujiahe Formation,sequence III to third and fourth members of Xujiahe Formation,and sequence IV to fifth and sixth members of Xujiahe Formation.Every sequence can be subdivided int... |
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| Keywords: | Sichuan Basin Late Triassic Epoch sequence stratatigraphy coal accumulation pattern |
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