Late Neogene Mountain Building of Eastern Kunlun Orogen: Constrained by DEM Analysis

来源 :Journal of Earth Science | 被引量 : 0次 | 上传用户:lengningyan
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Topography, as a net result of the dynamic interaction between endogenesis and exogenesis, holds immense information on tectonic uplift, surface erosion and thus mountain building. The eastern Kunlun (昆仑) orogen, which experienced significant Late Neogene tectonic uplift and is located in an arid environment, is advantageous for morphotectonic analysis based on well-preserved tectonic landforms. The digital elevation model (DEM) analysis was carried out for the central segment of the eastern Kunlun orogen based on shuttle radar topography mission (SRTM) data. River longitudinal profile analysis indicates that major rivers across the orogen are characterized by high river gradient indexes and intensive tectonic uplift. Differential uplift was also identified in swath-topography analysis in the studied area, which can be divided into three major tectonic-geomorphic units by orogenicstrike-parallel faults. It is indicated that the most active region is located to the south of the Xidatan (西大滩) fault with significant differential uplift. Another identified fault with differential uplift is the Middle Kunlun fault; however, the timing of which is suggested to be much older than that of the Xidatan fault. These analyses are concordantly supported by both field survey and studies of thermochronology, which in turn indicates that the DEM analysis bears great potential in morphotectonic analysis. Topography, as a net result of the dynamic interaction between endogenesis and exogenesis, holds immense information on tectonic uplift, surface erosion and thus mountain building. The eastern Kunlun orogen, which experienced significant Late Neogene tectonic uplift and is located in an arid environment, is advantageous for morphotectonic analysis based on well-preserved tectonic landforms. The digital elevation model (DEM) analysis was carried out for the central segment of the eastern Kunlun orogen based on shuttle radar topography mission (SRTM) data. indicates that major rivers across the orogen are characterized by high river gradient indexes and intensive tectonic uplift. Differential uplift was also identified in swath-topography analysis in the studied area, which can be divided into three major tectonic-geomorphic units by orogenicstrike-parallel faults It is indicated that the most active region is located to the south of the Xida tan (西 大滩) fault with significant differential uplift. Another identified fault with differential uplift is the Middle Kunlun fault; however, the timing of which is suggested to be much older than that of the Xidatan fault. These analyzes are concordantly supported by both field survey and studies of thermochronology, which in turn indicates that the DEM analysis bears great potential in morphotectonic analysis.
其他文献
在2002年广州国际摩托车展览会展,集中展示了一批企业自主开发并技含量和环保节能方面的体现,充分水平。洛阳北方易初摩托车有限公司集团、隆鑫集团、银钢集团、金城集 At
困惑:广告公司的创意是否真正的表达了乐凯的真实涵义 Confused: the creative company really expressed the true meaning of Lucky
对策一:综合考虑合作伙伴的各项因素对策二:考察合作伙伴对乐凯所处的市场和行业了解的程度对策三:考察合作伙伴的执行能力 Countermeasure one: Considering the various f
传统叠前深度偏移只能够提供地下的构造信息,但工业界在需要构造信息的同时还要与地下界面反射系数成比例的振幅信息。最近几年,基于单程波方程的保幅叠前深度偏移算法有了一
高职教育一直以培养学生技术应用能力为主线,设计学生的知识、能力、素质结构和培养方案,毕业生应具有技能应用能力强、知识面宽、素质高等特点。但是以“应用”为主旨和特征
22-27july,2013,GenevaThe International Congress of Linguists(ICL)takes place every five years,under the governance of the International Permanent Committee of L
对策一:找准各自的角色,通过沟通、解决分歧对策二 相互信任、相互学习 Strategy One: identify their respective roles, through communication, to resolve differences
期刊
基岩裂缝产生和发展的原因复杂,在分析过程中很难找到合适的相关变量因子,难以用常规的回归分析方法建立预测模型。将基岩裂缝开度的实测资料看作一个时间序列,利用灰色系统
在吃饭的当口得知了这次招标的结果。每年十一月份的这个时候,位于玉渊潭旁边的梅地亚中心车水马龙,华盖云集,而京城的整个广告界也充满亢奋激动的氛围。 I learned the re
The Nanyili (南一里), Laohegou (老河沟), and Shaiziyan (筛子岩) granitic intrusions are located in the southern margin of the Bikou (碧口) block in Pingwu (平武