• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geological Journal >Longitudinal profile of the Upper Weihe River: Evidence for the late Cenozoic uplift of the northeastern Tibetan Plateau
【24h】

Longitudinal profile of the Upper Weihe River: Evidence for the late Cenozoic uplift of the northeastern Tibetan Plateau

机译：上渭河上河纵向概况：东北高原东北高中隆起的证据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Upper Weihe River (UP-WHR) basin is located along the northeastern Tibetan Plateau. With the northeastward expansion of the Tibetan Plateau since the late Cenozoic, it has involved foreland propagation and undergone obvious surface uplift. In order to determine the latest differential rock uplift and river incision, longitudinal profiles for 12 major tributaries of the UP-WHR were extracted. Among them, 11 tributaries display uneven profiles with slope-break knickpoints, suggesting that they are in a transient state and that the change in base level caused by tectonic forces may respond to the channel evolution. In addition, channel steepness index (k(sn)) was calculated to detect the spatial variations of the rock uplift rate. The results show that the north margin of West Qinling (WQL) and the south Liupan Shan (LPS) areas have a high uplift rate. Reconstruction of the paleochannel indicates that the Weihe River has an average incision of 354 +/- 130m since it formed, and the south tributaries have a higher incision of 144 +/- 25m than the north. An average river erosion rate of 0.25-0.3m/ka was estimated, the WQL has a higher erosion rate of 0.1-0.12m/ka than Longzhong Basin and the south LPS. This uplift and river incision can be correlated to the northeastward growth of the Tibetan Plateau since the late Cenozoic.
机译：上渭河（UP-WHR）盆地位于藏东北高原。随着藏高高原的东北大扩张以来，自新生代以来，它涉及前陆繁殖和经过明显的表面隆起。为了确定最新的差分岩隆起和河切口，提取了12个主要支流的纵向型材。其中，11个支流展示了具有斜坡knickpoints的不均匀曲线，表明它们处于瞬态状态，并且由构造力引起的基层的变化可以响应沟道演变。另外，计算通道陡度指数（K（Sn））以检测岩石隆起速率的空间变化。结果表明，西秦岭（WQL）的北边缘和南延班山（LPS）地区的提升速度高。重建古希腊的重建表明，渭河的平均切口为354 +/- 130米，因为它形成，南支流术较高的切口144 +/- 25米。估计平均河流侵蚀率为0.25-0.3M / ka，WQL的侵蚀率较高为0.1-0.12m / ka，而不是龙忠盆地和南部LPS。这种隆起和河流切口可以与自新生代晚期以来的藏高高原的东北部长相关。

著录项

  • 来源
    《Geological Journal》 |2018年第1期|共15页
  • 作者

    Shi Xiaohui; Yang Zhao; Dong Yunpeng; Wang Shidi; He Dengfeng; Zhou Bo;

  • 作者单位

    Northwest Univ Dept Geol State Key Lab Continental Dynam Northern Taibai Str 229 Xian 710069 Peoples R China;

    Northwest Univ Dept Geol State Key Lab Continental Dynam Northern Taibai Str 229 Xian 710069 Peoples R China;

    Northwest Univ Dept Geol State Key Lab Continental Dynam Northern Taibai Str 229 Xian 710069 Peoples R China;

    Northwest Univ Dept Geol State Key Lab Continental Dynam Northern Taibai Str 229 Xian 710069 Peoples R China;

    Northwest Univ Dept Geol State Key Lab Continental Dynam Northern Taibai Str 229 Xian 710069 Peoples R China;

    Northwest Univ Dept Geol State Key Lab Continental Dynam Northern Taibai Str 229 Xian 710069 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;
  • 关键词

    channel steepness index; knickpoints; longitudinal profiles; northeastern Tibetan Plateau; Upper Weihe River basin;

    机译：频道陡度指数;基克点;纵向剖面;藏藏高原;上渭河流域;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号