| 新疆吐哈盆地东北缘早二叠世安加拉植物群及古气候条件 |
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| 引用本文： | 魏信祥,张雄华,杨宝忠,黄 兴,栾腾飞.新疆吐哈盆地东北缘早二叠世安加拉植物群及古气候条件[J].地质通报,2015,34(12):2163-2171. |
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| 作者姓名： | 魏信祥 张雄华 杨宝忠 黄 兴 栾腾飞 |
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| 作者单位： | 1.中国地质大学（武汉）地球科学学院，湖北 武汉 430074；
2.江西省核工业地质局测试研究中心，江西 南昌 330002 |
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| 基金项目： | 中国地质调查局项目（编号：1212011120966、12120113089500） |
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| 摘 要： | 地处吐哈盆地东北缘的哈密天山乡二道沟一带下二叠统依尔希土组产出大量植物化石,经鉴定有5属13种。该植物群以科达类为主,几乎全为安加拉植物区的常见分子,建立了Angaropteridium-Noeggerathiopsis-Nephropsis组合,经对比确定其时代为早二叠世。利用植物群组成及植物化石叶相统计分析,推断吐哈盆地早二叠世处于相对温暖湿润、具有明显波动的温带气候,存在着周期性的干-湿转变及年度的季节性变化。
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| 关 键 词： | 安加拉植物群 古气候 叶相分析 早二叠世 吐哈盆地 |
The Early Permian Angaran flora from the northeastern margin of Tuha basin and its implications for palaeoclimate |
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| WEI Xinxiang,ZHANG Xionghu,YANG Baozhong,HUANG Xing,LUAN Tengfei.The Early Permian Angaran flora from the northeastern margin of Tuha basin and its implications for palaeoclimate[J].Geologcal Bulletin OF China,2015,34(12):2163-2171. |
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| Authors: | WEI Xinxiang ZHANG Xionghu YANG Baozhong HUANG Xing LUAN Tengfei |
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| Institution: | 1. Faculty of Earth Sciences, China University of Geosciences (Wuhan), Wuhan 430074, Hubei, China;
2. Testing Center of Jiangxi Nuclear Industry Geological Bureau, Nanchang 330002, Jiangxi, China |
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| Abstract: | A large number of fossil plants were collected from the Lower Permian Yierxitu Formation in the vicinity of Erdaogou Village, Tianshan Town, Hami City on the northeast margin of Tuha basin. A total of five genera and thirteen species have been identified, including three undetermined species. Most of the florae are of Codaitopsida, and almost all of them are common elements of Angaran flora. The Angaropteridium-Noeggerathiopsis-Nephropsis plant assemblage has been established, and its age is considered to be Early Permian based on contrast with other assemblages. The composition of flora and leaf physiognomy show that the study area was located in a relatively warm and humid temperate climate with periodic drought to wetness shift and annual seasonal variations in the Early Permian. |
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| Keywords: | Angaran flora palaeoclimate leaf physiognomy Early Permian Tuha basin |
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