| 大通盆地沉积体系与聚煤特征 |
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| 引用本文： | 张慧.大通盆地沉积体系与聚煤特征[J].沉积学报,1998,16(2):139-144. |
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| 作者姓名： | 张慧 |
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| 作者单位： | 煤炭科学研究总院西安分院 西安 710054 |
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| 摘 要： | 根据板块构造理论分析，祁连山侏罗纪众多小型盆地的原型为走滑拉分盆地，这些盆地在早、中侏罗世普遍经历了两次拉分裂陷作用，大通盆地即为其中之一。本文分析了大通盆地的沉积体系和演化阶段，结果表明，聚煤作用主要与盆缘断裂和粗碎屑沉积相关，小型湿地扇为重要聚煤场所，构成盆地的富煤区。大通盆地的形成、演化及聚煤特征在祁连山侏罗纪煤盆地中有一定的代表性。
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| 关 键 词： | 拉张盆地 沉积体系 演化阶段 聚煤作用 大通盆地 |
| 收稿时间： | 1996-09-24 |
Sedimentary systems and Coal accumlation Characters of Dissecting Datong Basin |
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| Institution: | Xi'an Branch, Central Coal Mining Research Institure, Xi'an 710054 |
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| Abstract: | From the theory of plate tectonics,the prototype of Qilianshan small basin Jurassic is defined as pull apart basin,and they had undergone two time rifting during Early Mid Jurassic.The Paper takes Datong basin for example,dissects its sedimentary system,evolutinary stages and coal accumlation.The results show that coal formation is related to basin boundary fault and megaclast sedimentation,with small humid fan being important coal accumlating setting,and becoming high coal districts in the basin.Datong basin is a representative to Qilianshan small coal basin Jurassic. |
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| Keywords: | pull apart basin\ sedimentary system\ evolutinary stages\ coal accumltion\ Datong |
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