| 鄂尔多斯盆地东北缘中侏罗统延安组植物群与古气候分析 |
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| 引用本文： | 葛玉辉,孙春林,刘茂修.鄂尔多斯盆地东北缘中侏罗统延安组植物群与古气候分析[J].吉林大学学报(地球科学版),2006,36(2):164-168. |
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| 作者姓名： | 葛玉辉 孙春林 刘茂修 |
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| 作者单位： | 吉林大学,地球科学学院,长春,130061;吉林大学,地球科学学院,长春,130061;吉林大学,地球科学学院,长春,130061 |
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| 基金项目： | 中国地质调查局地质调查项目 |
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| 摘 要： | 鄂尔多斯盆地东北缘中侏罗统延安组为一套以河流滨湖相沉积为主的中粒中细粒长石砂岩、粉砂岩(泥质粉砂岩)、黑色页岩、粘土岩夹煤层。其中产大量的植物化石,计20属39种。经分析认为,这个植物群是一个属于我国北方区以Coniopteris-Phoenicopsis为代表的中侏罗世早期植物群,植物群组合反映鄂尔多斯盆地东北缘中侏罗世为偏潮湿的暖温带气候。
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| 关 键 词： | 鄂尔多斯盆地 中侏罗世 植物化石组合 暖温带 |
| 文章编号： | 1671-5888(2006)02-0164-05 |
| 收稿时间： | 2005-06-01 |
| 修稿时间： | 2005年6月1日 |
The Flora from the Middle Jurassic Yan'an Formation in the Northeastern Margin of Erdos Basin and Discussion on the Palaeoclimate |
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| GE Yu-hui,SUN Chun-lin,LIU Mao-xiu.The Flora from the Middle Jurassic Yan'an Formation in the Northeastern Margin of Erdos Basin and Discussion on the Palaeoclimate[J].Journal of Jilin Unviersity:Earth Science Edition,2006,36(2):164-168. |
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| Authors: | GE Yu-hui SUN Chun-lin LIU Mao-xiu |
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| Institution: | College of Earth Sciences, Jilin University, Changchun 130061, China |
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| Abstract: | The Middle Jurassic Yan'an Formation in the Northeastern Margin of Erdos Basin belongs to a succession fluvial and shore facies middle-fine grained feldspar sandstone,siltstone(pelitic siltstone),black shale,claystone intercalated with coal seams,in which there occur many plant fossils of 39 species belonging to 20 genera.It is considered that the fossils belong to the North Floristic pro-(vince) represented by Coniopteris-Phoenicopsis in the early Middle Jurassic.This indicates that the Northeastern Margin of Erdos Basin had a slightly humid and warm climate condition in the age of the Middle Jurassic. |
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| Keywords: | Erdos Basin Middle Jurassic plants fossil warm climate |
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