| 湖南省资汝煤田上三叠统沉积环境及聚煤特征 |
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| 引用本文： | 张超,;伍意得,;马文华,;吉丛伟,;邵龙义,;马施民.湖南省资汝煤田上三叠统沉积环境及聚煤特征[J].中国煤炭地质,2009(12):12-14. |
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| 作者姓名： | 张超 ;伍意得 ;马文华 ;吉丛伟 ;邵龙义 ;马施民 |
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| 作者单位： | [1]中国矿业大学（北京）地球科学与测绘工程学院,北京100083; [2]湖南省煤田地质局,湖南长沙411114 |
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| 基金项目： | 国土资源大调查项目（1212010633901）及国家自然科学基金项目（40672103）资助. |
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| 摘 要： | 湘东南地区资汝煤田上二三叠统为一套灰黑色砂质泥岩、细砂岩、中粗粒砂岩以及煤层等沉积组合，具有砂泥薄互层层理、斜波状层理、水平层理及大型交错层理等沉积结构。该地区沉积环境为渴湖三角洲，煤层主要发育于渴湖淤浅而成的泥炭沼泽。研究区西南方向发育煤层层数比北东向多，盆地边缘煤的灰分比盆地中心的高，而硫分含量却比盆地中心低，盆地中心煤质较好。
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| 关 键 词： | 湘东南 沉积环境 上三叠统 |
Upper Triassic Sedimentary Environment and Coal Accumulation Features in Zixing-Rucheng Coalfield,Hunan Province |
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| Institution: | Zhang Chao, Wu Yide, Ma Wenhua, Ji Congwei, Shao Longyi , Ma Shimin (1. School of Earth Sciences, Surveying and Mapping Engineering, CUMTB, Beijing 100083; 2. Hunan Bureau of Coal Geological Exploration, Changsha, Hunan 411114) |
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| Abstract: | The Upper Triassic Series in the Zixing-Rucheng coalfield in southeastern Hunan is a set of grayish black sandy mudstone, fine sandstone, medium coarse sandstone and coal seams combination. It possesses sedimentary textures of sand/mud thin interlayered bedding, oblique wavy bedding, horizontal bedding and large-scale cross-bedding. The sedimentary environment in the area is lagoon delta, coal seams were mainly formed in peat bogs in silted up lagoon. Coal seam number in the southwestern study area is more than in northeastern study area; ash content of coal seams in the basin margin is higher than coal seams in the basin center; while sulfur content in basin margin is lower than in basin center, thus coal quality is better in the basin center. |
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| Keywords: | southeastern Hunan sedimentary environment Upper Triassic Series |
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