...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >From mass-wasting to slope stabilization - putting constrains on a tectonically induced transition in slope erosion mode: A case study in the Judea Hills, Israel
【24h】

From mass-wasting to slope stabilization - putting constrains on a tectonically induced transition in slope erosion mode: A case study in the Judea Hills, Israel

机译：从大量浪费到边坡稳定-将约束约束在构造侵蚀诱发的边坡侵蚀模式中：以以色列Judea Hills为例

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

Calcrete-coated remnants of landslide debris and alluvial deposits are exposed along the presently stable hillslopes of the Soreq drainage, Judea Hills, Israel. These remnants indicate that a transition from landslide-dominated terrain to dissolution-controlled hillslope erosion had occurred. This transition possibly occurred due to the significant decrease in tectonic uplift during the late Cenozoic. The study area is characterized by sub-humid Mediterranean climate. The drainage hillslopes are typically mantled by thick calcrete crusts overlying Upper Cretaceous marine carbonate rocks. Using TT-OSL dating of aeolian quartz grains incorporated in the calcrete which cements an ancient landslide deposit, we conclude that incision of ~100 m occurred from 1056±262 to 688±86 ka due to ~0·3° westward tilt of the region; such incision invoked high frequency of landslide activity in the drainage. The ages of a younger landslide remnant, alluvial terrace, and alluvial fan, all situated only a few meters above the present level of the active streambed, range between 688±86 ka and 244±25 ka and indicate that since 688±86 the Soreq base level had stabilized and that landslide activity decreased significantly by the middle Pleistocene.
机译：用石灰石覆盖的滑坡残渣和冲积物残留物沿以色列朱迪亚山Soreq排水渠目前稳定的山坡暴露。这些残余表明发生了从滑坡为主的地形到溶解控制的山坡侵蚀的过渡。这种过渡可能是由于新生代晚期构造隆升的显着减少所致。研究区域的特征是亚湿地中海气候。排水山坡通常由上白垩统海相碳酸盐岩覆盖的厚厚的硬壳覆盖。利用结合在凝结古滑坡沉积物中的风化石英颗粒的TT-OSL测年，我们得出结论，由于该地区向西倾斜约0·3°，从1056±262到688±86 ka发生了约100 m的切割;这种切口在排水中引起滑坡活动的高频率。年轻的滑坡残余，冲积阶地和冲积扇的年龄都位于活动流床当前高度以上几米的范围内，范围在688±86 ka和244±25 ka之间，这表明自688±86以来Soreq中更新世以来，滑坡活动的基础水平已经稳定，滑坡活动大大降低。

著录项

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