| 东胜煤田侏罗系延安组植物群及古气候分析 |
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| 引用本文： | 孙希杰,王士路,商晓飞,李海锋.东胜煤田侏罗系延安组植物群及古气候分析[J].山东科技大学学报(自然科学版),2011,30(1). |
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| 作者姓名： | 孙希杰 王士路 商晓飞 李海锋 |
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| 作者单位： | 1. 山东科技大学,地质科学与工程学院,山东,青岛,266510
2. 山东省煤田地质局第一勘探队,山东,枣庄,277500 |
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| 基金项目： | 内蒙古自治区东胜煤田柴登勘查区煤炭普查项目 |
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| 摘 要： | 应用放大镜观察的方法对东胜煤田侏罗系延安组中保存的大量植物化石进行分析,共鉴定出24属64种.在此基础上,对侏罗系延安组植物群组合特征及其所反映的古气候进行研究.结果表明:该植物群可分为有继承性的Coniopteris szeiana-Nilssonia pterophylloides-Eboracia lobifolia与Neocalalamites hoerensis-Podozamites lanceolatus上下两个组合;该植物群与北京门头沟植物群、豫西义马植物群主要属种相同,都是银杏纲、真蕨纲占优势,并以蚌壳蕨科的繁盛为特征,均属于我国北方地区早、中侏罗世Coniopteris-Phoenicopsis植物群,可进行对比;植物群组合特征反映东胜煤田延安组时期为季节分明、偏潮湿的温带-暖温带气候.
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| 关 键 词： | 东胜煤田 侏罗系 延安组 植物群 古气候 |
Analysis on Flora of Yanan Formation of Jurassic System in Dongsheng Coalfield and Palaeoclimate |
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| SUN Xijie,WANG Shilu,SHANG Xiaofei,LI Haifeng.Analysis on Flora of Yanan Formation of Jurassic System in Dongsheng Coalfield and Palaeoclimate[J].Journal of Shandong Univ of Sci and Technol: Nat Sci,2011,30(1). |
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| Authors: | SUN Xijie WANG Shilu SHANG Xiaofei LI Haifeng |
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| Institution: | SUN Xijie1,WANG Shilu2,SHANG Xiaofei1,LI Haifeng1(1.College of Geological Science and Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266510,China,2.The First Prospecting Team,Shandong Bureau of Coal Geology,Zaozhuang,Shandong 277500,China) |
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| Abstract: | A number of plant fossils existed in the Yanan formation of Jurassic system in Dongsheng coalfield were analyzed with the method of magnifier and 69 species belonging to 24 genera were worked out.On this basis,the combination characteristics and their correspondent palaeoclimate of the flora in Yanan formation of Jurassic system were studied.The results showed that the flora could be divided into two successive combinations,i.e,the upper combination Coniopteris szeiana-Nilssonia pterophylloides-Eboracia lob... |
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| Keywords: | Dongsheng coalfield Jurassic system Yanan formation flora palaeoclimate |
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