Collaborative Research: Geodynamics Of Indentor Corners

0003561哈莱这个项目将利用喜马拉雅造山带的东部合性来解决大陆碰撞地球动力学中的关键问题：造山带和相关的高原是如何结束的，在造山带运动中构造和地表过程是如何相互作用来塑造地壳的，以及变形是如何在不同的尺度上划分的？需要验证的具体假设有：1)流变学控制高原/压痕边缘的地形和岩石圈力学；2)侵蚀作用对岩石圈动力学的控制程度与地壳增厚和侧向调节作用相同；两者之间的反馈最终塑造了造山带的演化；③“合成”区内上地壳与下岩石圈变形完全解耦。所采用的方法包括跟踪通过东喜马拉雅合带中部地区的质量通量的大小、速率和类型。为此，主要研究人员将使用地质年代学、地貌学、GPS、岩石学、地震和构造技术，并通过三维建模进行充分整合

0003561HalletThis project will use the eastern syntaxis of the Himalayan orogen to address key questions in the geodynamics of continental collisions: how do orogens and associated plateaus come to an end, how do tectonic and surficial processes interact to shape the crust during orogeny, and how is deformation partitioned at various scales? Specific hypotheses to be tested are: 1) rheology controls topography and lithospheric mechanics across plateau/indentor margin; 2) erosion controls lithospheric dynamics to the same extent as crustal thickening and lateral accommodation; feedbacks between the two ultimately shape the evolution of the orogen; and 3) there is complete decoupling between upper crustal and lower lithospheric deformation within the "syntaxial" region. The approach to be used involves tracking the magnitude, rates, and type of mass fluxes through the central region of the eastern Himalayan syntaxis. To do this, the Principal Investigators will use geochronologic, geomorphic, GPS, petrologic, seismic, and structural techniques, fully integrated by three-dimensional modeling.***