| 山西宁武煤田的大同组 |
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| 引用本文： | 常江林,任斗金.山西宁武煤田的大同组[J].地层学杂志,1996,20(4):262-270. |
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| 作者姓名： | 常江林 任斗金 |
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| 作者单位： | [1]山西煤田地质研究所 [2]山西煤田地质综合普查队 |
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| 摘 要： | 宁武煤田的大同组主要由黄绿色、灰绿色砂岩、砂质泥岩、粉砂岩及泥岩组成，夹有薄层灰岩及煤层，为一套湖泊到湖泊三角洲相含煤沉积。底界置于铜川组紫红色泥岩之顶，顶界为云岗组灰绿色砂岩之底，厚２８３～４６１ｍ。本组含丰富的植物化石，可归于Ｃｏｎｉｏｐｔｅｒｉｓ－Ｐｈｏｅｎｉｃｏｐｓｉｓ植物群，时代为中侏罗世。
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| 关 键 词： | 中侏罗世，大同组，沉积环境，宁武煤田，山西，植物群 |
The Datong Formation of Ningwu Coalfield, Shanxi |
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| Chang Jiang-lin, Ren Dou-jin, Gao Qiang.The Datong Formation of Ningwu Coalfield, Shanxi[J].Journal of Stratigraphy,1996,20(4):262-270. |
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| Authors: | Chang Jiang-lin Ren Dou-jin Gao Qiang |
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| Abstract: | The Datong Formation of Ningwu Coalfield is composed mainly of yellowish green or greyish green sandstone, silty mudstone, siltstone and mudstone, intercalated with limestone beds and coal seams, ranging from the top of red mudstone of the Tongchuan Formation to the bottom of greyish green sandstone of the Yungang Formation, 283-416m thick, which was deposited in the lake to lake-delta environments. This Formation contains very abundant land plant fossils, grouping into the Coniopteris-Phoenicopsis Flora of Middle Jurassic age. |
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| Keywords: | Middle Jurassic Datong Formation depositional enviroment Ningwu Coalfield Shanxi Flora |
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