| 平沟矿区山西组潮控三角洲—河流沉积及聚煤特点 |
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| 引用本文： | 郭英海,贾进华.平沟矿区山西组潮控三角洲—河流沉积及聚煤特点[J].煤田地质与勘探,1998,26(5):10-13. |
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| 作者姓名： | 郭英海 贾进华 |
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| 作者单位： | 中国矿业大学，石油勘探开发科学研究院 |
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| 摘 要： | 通过野外和室内研究，提出山西组形成于河流—潮控三角洲环境。河流沉积包括辫状曲流河和高弯度曲流河。潮控三角洲以潮汐沉积发育为标志，潮汐沙坝、潮河道构成其沉积骨架，揭示了沉积期仍受海水内泛影响。煤聚积发生在河道岸后边缘沼泽环境、废弃潮汐沙坝上发育起来的潮坪环境及分流间湾充填变浅形成的泥炭沼泽环境。总结了不同沉积环境的聚煤特点。
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| 关 键 词： | 三角洲相 河流相 聚煤作用 山西组 内蒙西南缘 |
THE TIDAL DELTA FLUVIAL SEDIMENTATION AND COAL ACCUMULATION OF SHANXI FORMATION IN PINGOU MINING AREA,SOUTH WESTERN EDGE OF INNER MONGOLIA |
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| Guo Yinghai,Liu HuanJie.THE TIDAL DELTA FLUVIAL SEDIMENTATION AND COAL ACCUMULATION OF SHANXI FORMATION IN PINGOU MINING AREA,SOUTH WESTERN EDGE OF INNER MONGOLIA[J].Coal Geology & Exploration,1998,26(5):10-13. |
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| Authors: | Guo Yinghai Liu HuanJie |
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| Institution: | Guo Yinghai Liu HuanJie (China University of Mining and Technology) Jia Jinhua (Scientific Research Institute of Petroleum Exploration and Development) |
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| Abstract: | The detailed field observation and laboratory study show that the Shanxi Formation was formed in tidal delta fluvial environments.The fluviation included braided meander stream and high curving degree meander stream.The tidal delta was marked by the development of tidal deposition.tidal sand bar and tidal channel deposits were the main components of tidal deposition.The existence of tidal delta shows that the edpositional basin was influenced by sea flowage.The coal accumulation developed in the environments of channel bank swamp,the tidal flat developed at the abanoned tidal sand bar and peat swamps developed from filling shallowed distributary bays.This paper analyses the coal accumulation characteristics of every depositional environments. |
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| Keywords: | delta facies fluvialite facies coal accumulation process Shanxi formation South western Edge of Inner Mongolia |
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