| 青藏高原古新世构造岩相古地理 |
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| 引用本文： | 梁银平,张克信,宋博文,王国灿,徐亚东,陈锐明,陈奋宁,骆满生.青藏高原古新世构造岩相古地理[J].地质通报,2013,32(1):67-74. |
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| 作者姓名： | 梁银平 张克信 宋博文 王国灿 徐亚东 陈锐明 陈奋宁 骆满生 |
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| 作者单位： | 1.地质出版社，北京100083；
2.中国地质大学（武汉）生物地质与环境地质国家重点实验室，湖北 武汉 430074；
3.中国地质大学（武汉）地球科学学院，湖北 武汉 430074；
4.中国地质大学地质过程与矿产资源国家重点实验室，湖北 武汉430074；
5.中国地质调查局西安地质矿产研究所，陕西 西安 710054 |
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| 基金项目： | 中国地质调查局国家青藏专项《青藏高原新近纪隆升与地质事件群研究》(编号:1212011121261);国家自然科学基金《国家创新研究群体科学基金》(批准号:40921062) |
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| 摘 要： | 在系统分析青藏高原及邻区古新世残留盆地类型、形成构造背景、岩石地层序列的基础上,对青藏高原古新世构造岩相古地理演化特征进行讨论:青藏高原西北部的西昆仑,北部的阿尔金、祁连、西秦岭,东北部的松潘-甘孜和南部的冈底斯陆缘弧带,以及北部的阿拉善古陆和南部的上扬子古陆和印度古陆为隆起剥蚀区。西宁-兰州、成都和班戈地区零星分布个别构造压陷湖盆。高原西部和南部为新特提斯海。南部的特提斯-喜马拉雅海区的古地理格局为萨嘎以西为残余洋盆,以东为前陆盆地。由此提出,白垩纪晚期—古新世印度板块与欧亚板块的碰撞起始于东部构造结,新特提斯洋的闭合是自东向西进行的。
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| 关 键 词： | 岩相古地理 沉积演化 古新世 青藏高原 |
Paleocene tectonic lithofacies paleogeography of the Tibetan Plateau |
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| LIANG Yin-ping,ZHANG Ke-xin,SONG Bo-wen,WANG Guo-can,XU Ya-dong,CHEN Rui-ming,CHNE Fen-ning,LUO Man-sheng.Paleocene tectonic lithofacies paleogeography of the Tibetan Plateau[J].Geologcal Bulletin OF China,2013,32(1):67-74. |
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| Authors: | LIANG Yin-ping ZHANG Ke-xin SONG Bo-wen WANG Guo-can XU Ya-dong CHEN Rui-ming CHNE Fen-ning LUO Man-sheng |
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| Institution: | 1.Geological publishing House,Beijing 100083;
2. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, Hubei, China;
3. Faculty of Earth Sciences, China University of Geosciences (Wuhan), Wuhan 430074, Hubei, China;
4. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, Hubei, China;
5. Institute of Geology and Mineral Resources, China Geological Survey, Xi'an 710054, Shaanxi, China |
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| Abstract: | Based on an integrated study of the geological maps and previous achievements, the authors analyzed the attributes, tectonic settings and lithofacies-stratigraphic sequences of the remnant basins in the Tibetan plateau. In Paleocene, the Tibetan Plateau was characterized by the erosional areas in western Kunlun, Altun, Qilian, western Qinling, Songpan-Garze and Gangdise, the Alxa and Indian ancient lands and the depressed basins (lakes and pluvial plains) in Xining-Lanzhou, Chengdu and Baingoin. There existed Neo-Tethyan remnant sea in western and southern Tibetan Plateau. It is held that the paleogeography of the Neo-Tethyan remnant sea was a remnant oceanic basin to the west of the Saga area and a foreland basin to the east of Saga during the Paleocene. The authors argue that the closure of the Neo-Tethys progressed from east to west. |
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| Keywords: | lithofacies paleogeography evolution of sedimentation Paleocene Tibetan Plateau |
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