| 渭河宝鸡段河谷地貌的构造气候响应 |
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| 引用本文： | 陈云,童国榜,曹家栋,李铮华,贾艳琨,徐建明,扬振京.渭河宝鸡段河谷地貌的构造气候响应[J].地质力学学报,1999,5(4):49-56. |
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| 作者姓名： | 陈云 童国榜 曹家栋 李铮华 贾艳琨 徐建明 扬振京 |
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| 作者单位： | 中国地质科学院水文地质环境地质研究所,河北,正定,050800 |
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| 摘 要： | 渭河宝鸡段发育五级河流阶地，分别形成于１．２ＭａＢＰ，０．８ＭａＢＰ，０．５ＭａＢＰ，０．１３ＭａＢＰ，０．００９ＭａＢＰ。它们是第四纪早更新世中期以来，青藏高原整体隆升过程中几个大幅度抬升阶段及其驱动的气候变化的响应，记录了准０．４Ｍａ，准０．１Ｍａ周期的构造气候旋回与亚旋回。
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| 关 键 词： | 渭河阶地 构造气候旋回 准0.4Ma周期 贯通时代 |
| 收稿时间： | 1999/8/13 0:00:00 |
| 修稿时间： | 1999-8-13 |
TECTONIC CLIMATE RESPONSE IN THE GEOMORPHOLOGY OF THE WEIHE RIVER VALLEY AROUND BAOJI, SHAANXI PROVINCE |
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| CHEN Yun,TONG Guo-bang,CAO Jia-dong,LI Zheng-hu,JIA Yan-kun,XU Jian-ming,YANG Zhen-jing.TECTONIC CLIMATE RESPONSE IN THE GEOMORPHOLOGY OF THE WEIHE RIVER VALLEY AROUND BAOJI, SHAANXI PROVINCE[J].Journal of Geomechanics,1999,5(4):49-56. |
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| Authors: | CHEN Yun TONG Guo-bang CAO Jia-dong LI Zheng-hu JIA Yan-kun XU Jian-ming YANG Zhen-jing |
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| Institution: | Institute of Hydrogeology and Engineering Geology, CAGS, Zhengding Hebei 050800, China,Institute of Hydrogeology and Engineering Geology, CAGS, Zhengding Hebei 050800, China,Institute of Hydrogeology and Engineering Geology, CAGS, Zhengding Hebei 050800, China,Institute of Hydrogeology and Engineering Geology, CAGS, Zhengding Hebei 050800, China,Institute of Hydrogeology and Engineering Geology, CAGS, Zhengding Hebei 050800, China,Institute of Hydrogeology and Engineering Geology, CAGS, Zhengding Hebei 050800, China and Institute of Hydrogeology and Engineering Geology, CAGS, Zhengding Hebei 050800, China |
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| Abstract: | There have been developed five stages of terraces, formed in 1.2MaBP, 0.8MaBP, 0.5MaBP, 0.13MaBP, 0.009MaBP, respectively, in the Weihe river around Baoji, Shaaxi Province.Each of these stages is considered to be the response to the corresponding large up lifting and consequent climatic changes during the rising of Qingzang Plateau''s since middle period of early Pleistocene, witnessing tectonic climatic cycles and subcycles of a period of about 0.4Ma and 0.1Ma.Such scale tectonic climatic cycles well agrees with the astroclimatic circles recorded by loess-paleosol sequence.This shows that there may be some causative relation between them. A knowledge of the relation will be helpful to the undertanding of the environmental evolution of the region.A preliminary discussion on the age of the passage of the Weihe river through the Longshan Mt.and the formation of a unified drainage system of it. |
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| Keywords: | Weihe terrace tectonic climate cycle 0 4Ma period age |
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