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Anatomy of composition and nature of plate convergence： Insights for alternative thoughts for terminal india-eurasia collision

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Science China Earth Sciences 2017年第6期60卷 1015-1039页

作者： XIAO WenJiao AO SongJian YANG Lei HAN ChunMing WAN Bo ZHANG Ji'En ZHANG ZhiYong LI Rui CHEN ZhenYu SONG ShuaiHua State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Science Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China

The pattern and timing of collision between india and eurasia have long been a major concern of the international community. However, no consensus has been reached hitherto. To explore and resolve the disagreements in the Himalayan study,in this paper we begin with the methodology and basic principles for the anatomy of composition and nature of convergent margins,then followed by an effort to conduct a similar anatomy for the india-eurasia collision. One of the most common patterns of plate convergence involves a passive continental margin, an active continental margin and intra-oceanic basins together with accreted terranes in between. The ultimate configuration and location of the terminal suture zone are controlled by the basal surface of the accretionary wedge, which may show fairly complex morphology with Z-shape and fluctuant geometry. One plausible method to determine the terminal suture zone is to dissect the compositions and structures of active continental margins. It requires a focus on various tectonic elements belonging to the upper plate, such as accretionary wedges, high-pressure(HP)-ultra-high-pressure(UHP) metamorphic rocks, Barrovian-type metamorphic rocks and basement nappes, together with superimposed forearc *** geological records can define the extreme limits and the intervening surface separating active margin from the passive one,thus offering a general sketch for the surface trace of the terminal suture zone often with a cryptic feature. Furthermore, the occurrence of the cryptic suture zone in depth may be constrained by geophysical data, which, in combination with outcrop studies of HP-UHP metamorphic rocks, enables us to outline the terminal suture zone. The southern part of the Himalayan orogen records complicated temporal and spatial features, which are hard to be fully explained by the classic "two-plate-one-ocean" template,therefore re-anatomy of the compositions and nature for this region is necessitated. Taking advantage of

关键词： Himalayan orogen Yarlung-Zangbo ophiolite Tethyan Himalayan Sequence india-eurasia collision Anatomy of orogeny

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Structural and Chronological Evidence for the india-eurasia collision of the Early Paleocene in the Eastern Himalayan Syntaxis, Namjagbarwa

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Acta Geologica Sinica(English Edition) 2002年第4期76卷 446-454页

作者：张进江季建清钟大赉桑海清何顺东 Department of Geology Peking University Beijing 100871 Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029

The eastern Himalayan syntaxis in Namjagbarwa is a high-grade metamorphicterrain formed by the india-eurasia collision and northward indentation of the indian continent intoAsia. Right- and left-lateral slip zones were formed by the indentation on the eastern and westernboundaries of the syntaxis respectively. The Dongjug-Mainling fault zone is the main shear zone onthe western boundary. This fault zone is a left-lateral slip belt with a large component ofthrusting. The kinematics of the fault is consistent with the shortening within the syntaxis, andthe slipping history along it represents the indenting process of the syntaxis. The Ar-Archronological study shows that the age of the early deformation in the Dongjug-Mainling fault zoneranges from 62 to 59 Ma. This evidences that the india-eurasia collision occurred in the earlyPaleocene in the eastern Himalayan syntaxis.

关键词： india-eurasia collision eastern Himalayan syntaxis Namjagbarwa structuralchronology Paleocene

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Surface Processes Driving Intracontinental Basin Subsidence in the Context of india–eurasia collision:Evidence from Flexural Subsidence Modeling of the Cenozoic Southern Tarim Basin along the West Kunlun Foreland,NW Tibetan Plateau

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Acta Geologica Sinica(English Edition) 2023年第6期97卷 1778-1786页

作者： HUANG Hao LIN Xiubin AN Kaixuan ZHANG Yuqing CHEN Hanlin CHENG Xiaogan LI Chunyang Key Laboratory of Geoscience Big Data and Deep Resources of Zhejiang Province School of Earth SciencesZhejiang UniversityHangzhou 310027China Research Center for Structures in Oil and Gas-Bearing Basins Ministry of EducationHangzhou 310027China Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China Research Institute of Petroleum Exploration and Development Sinopec Southwest Oil and Gas CompanyChengdu 610041China

The india–eurasia collision has produced a number of Cenozoic deep intracontinental basins,which bear important information for revealing the far-afield responses to the remote *** their significance,their subsiding mechanism remains the subject of debate,with end-member models attributing it to either orogenic or sedimentary *** this study,we conduct flexural subsidence modeling with a two-dimensional finite elastic plate model on the Hotan-Mazatagh section along the southern Tarim Basin,which defines a key region in the foreland of the West Kunlun Orogen,along the NW margin of the Tibetan *** modeling results indicate that the orogenic load of West Kunlun triggers the southern Tarim Basin to subside by up to less than ~6 km,with its impact weakening towards the basin interiors until ~230 km north from the Karakax *** sedimentary load,consisting of Cenozoic strata,forces the basin to subside by ~2 to~7 *** combination with the retreat of the proto-Paratethys Sea and the paleogeographic reorganization of the Tarim Basin,we propose that surface processes,in particular a shift from an exorheic to an endorheic drainage system associated with the consequent thick sedimentary load,played a decisive role in forming deep intracontinental basins in the context of the india-eurasia collision.

关键词： flexural subsidence modeling india-eurasia collision West Kunlun Tarim Basin Northwest Tibetan Plateau

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Stress Transfer and the Impact of the india-eurasia collision and the Western Pacific Subduction on the Geodynamics of the Asian Continent

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Open Journal of Earthquake Research 2022年第4期11卷 73-88页

作者： Victor. G. Bykov Tatyana V. Merkulova Kosygin Institute of Tectonics and Geophysics Far East Branch Russian Academy of Sciences Khabarovsk Russia

The interaction between the india-eurasia collision and the Western Pacific subduction and their contribution to recent geodynamics of the Asian continent are discussed. We perform a comparative analysis of the data available from world literature and new data on the slow strain and earthquake migration from the india-eurasia collision and the Western Pacific subduction zones. Based on the concepts of wave dynamics of the deformation processes, a localization scheme is constructed illustrating the migration of slow strain fronts in central and eastern Asia, and the wave geodynamic impact of collision and subduction on the Asian continent is shown.

关键词： Stress Transfer Earthquake Migration Slow Strain Fronts Geodynamics india-eurasia collision Western Pacific Subduction

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Episodic sandstone-type uranium mineralization in Asia during the Late Mesozoic-Cenozoic

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Science China Earth Sciences 2023年第9期66卷 2034-2044页

作者： Chuang ZHANG Beijing Research Institute of Uranium Geology China National Nuclear CorporationBeijing 100029China

Sandstone-type uranium deposits(STUDs) are the most important global source of uranium. However, it is unclear why STUDs have a non-random distribution in time and space. It is generally thought that STUDs are formed by the circulation of groundwater in sandstone rocks. The groundwater is typically oxidized and sourced from local precipitation, which suggests the regional climate may have a role in the formation of STUDs. The groundwater circulation is mainly affected by basin evolution, which means that regional tectonism may also control the formation of STUDs. In this study, the author examined STUDs in Asia, and compiled previously reported ages for STUDs and compared these with the uplift history of the major orehosting regions and the late Mesozoic–Cenozoic climatic evolution of Asia. Apart from a few uranium deposits in the Transural region, most of the STUDs in Asia were formed during the Late Cretaceous to Quaternary, and can be classified into three stages:Late Cretaceous–early Paleogene(80–50 Ma;stage I), Oligocene–mid-Miocene(25–17 Ma;stage Ⅱ), and late Miocene–present(8–0 Ma;stage Ⅲ). The formation of STUDs in Asia was closely related to regional uplift caused by india–eurasia collision,subduction of oceanic plates, and increased humidity during greenhouse climate periods and intensification of the Asian Monsoon.

关键词： Sandstone type uranium deposits india-eurasia collision Asian monsoon system Asian Westerlies

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新特提斯洋俯冲与大气二氧化碳浓度变化的动力学联系

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Science Bulletin 2023年第6期68卷 637-644,M0004页

作者：沈昊赵亮郭正堂袁怀玉杨建锋王欣欣郭正府邓成龙吴福元 State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Science University of Chinese Academy of SciencesBeijing 100049China Australian Research Council Centre of Excellence for Core to Crust Fluid Systems Department of Earth and Environmental SciencesMacquarie UniversityNew South Wales 2109Australia

新特提斯洋的脱碳俯冲被认为在新生代气候变化中发挥了重要作用,但仍然缺少定量的研究.本研究使用改进的地震层析成像重建方法构建了过去的俯冲情景,并计算了印度-欧亚大陆碰撞区域的俯冲板块通量.新生代时期的俯冲板片通量和古气候参... 详细信息

新特提斯洋的脱碳俯冲被认为在新生代气候变化中发挥了重要作用,但仍然缺少定量的研究.本研究使用改进的地震层析成像重建方法构建了过去的俯冲情景,并计算了印度-欧亚大陆碰撞区域的俯冲板块通量.新生代时期的俯冲板片通量和古气候参数的变化之间存在显著的同步性,表明这些过程之间存在因果关系.新生代早期,新特提洋内俯冲的关闭导致更多富含碳的沉积物沿着欧亚大陆边缘俯冲,为大陆弧火山的岩浆作用提供了更多的碳源,进一步引发了全球变暖.在全球气候达到早始新世峰值后,印度-欧亚大陆碰撞导致的新特提斯俯冲的突然终止造成了距今50~40 Ma期间大气中二氧化碳浓度的快速下降.距今40 Ma后,大气中的二氧化碳浓度逐渐降低,这可能是由于青藏高原的生长导致大陆风化作用增强所致.本文结果有助于更好地理解新特提斯洋演化的动态含义,并可能为未来的碳循环模型提供新的约束条件.

关键词： Tectonic carbon cycling Neo-Tethyan subduction india-eurasia collision Tectonic reconstruction Seismic tomography Climate change

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Receiver function analysis for seismic structure of the crust and uppermost mantle in the Liupanshan area,China

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Science China Earth Sciences 2007年第Z2期50卷 227-233页

作者： TONG WeiWei WANG LiangShu MI Ning XU MingJie LI Hua YU DaYong LI Cheng LIU ShaoWen LIU Mian Eric SanDvol Department of Earth Sciences Nanjing UniversityNanjing 200093China Department of Earth SciencesNanjing UniversityNanjing 200093China Department of Geological Science University of MissouriColumbiaMO 65211USA

A portable broadband seismic array was deployed from the northeast Tibetan Plateau to the southwest Ordos block,*** seismic structure of the crust and uppermost mantle of the Liupanshan area is obtained using receiver function analysis of teleseismic body *** crustal thickness and Poisson's ratios are estimated by stacking the weighted amplitudes of receiver *** results reveal complex seismic phases in the Liupanshan area,implying intense deformation at the boundary between the Tibetan Plateau and the Ordos *** average crustal thickness is 51.5 km in the northeast Tibetan Plateau,53.5 km in the Liupan Mountain and 50 km in the southwest Ordos block,resulting in a concave Moho beneath the Liupan *** Poisson's ratio of the Liupanshan area varies between 0.27-0.29,higher than the value of 0.25-0.26 to the east and west of the Liupan Mountain,suggesting partial melting in the lower *** variance in Poisson's ratio across the Liupan Mountain indicates notable changes in the crustal composition and mechanical properties,which may be formed by the northeastward flow of the Tibetan lower crust during the india-eurasia collision.

关键词： receiver function Liupan Mountain crustal structure Poisson's ratio india-eurasia collision

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Dynamic modeling for crustal deformation in China:comparisons between the theoretical prediction and the recent GPS data

Dynamic modeling for crustal deformation in China:comparison...

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中国科学院地质与地球物理研究所2006学术年会

作者： Jian Wang and Zheng-Ren Ye Institute of Geology and geophysics,Chinese Academy of Sciences,Beijing 100029,China

Using a dynamic method,we present a quantitative model for the present-day crustal movement in *** consider not only the effect of the india-eurasia collision,the gravitational potential energy difference of the Tibet Plateau,but also the contribution of the shear traction on the bottom of the lithosphere induced by the global mantle *** solving a system of force balance equations using a finite element method,we obtain the crustal movement velocity in China with respect to the eurasia *** comparison between our result and the velocity field obtained from the GPS observation shows that our model satisfactorily reproduces the general picture of crustal deformation in *** modeling results reveal that the stress field on the base of the lithosphere induced by the mantle flow is probably a considerable factor that causes the movement and deformation of the lithosphere in continental *** its effect focus on the Eastern China.

关键词： crustal movement india-eurasia collision Mantle convection Finite element method

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Slip partitioning in the northeast Pamir-Tian Shan convergence zone

Slip partitioning in the northeast Pamir-Tian Shan convergen...

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中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： Yoshiki Ninomiya Geological Survey of Japan National Institute of Advanced Industrial science and Technology Tsukuba 305-8567 Japan

Based on a detailed analysis of satellite imagery combined with field geologic and geomorphic observations, we have mapped late Cenozoic folds and faults in the northeastern Pamir-Tian Shan convergence *** is a unique example to understand intracontinental ongoing mountain building within india-eurasia collision *** the front of northeastern Pamir,our investigations reveal that the NW-WNW-trending folds display a right-stepping en echelon pattern and NW-WNW-striking faults are mainly characterized by south-dipping thrusts with an extensive dextral strike-slip *** systems across the active faults show a systematic right-lateral *** contrast,structural style of the ENE trending fold-and-thrust belts are predominated by south-north directed shortening southwest of the Tian *** results also infer that oblique thrusting accommodates as long-term dextral slip rate of ca.4.0 mm/yr during the late Cenozoic time north of the Pamir topographic ***-stratigraphic evidence suggests that the tectonic deformation was initiated at ca.3-5 Ma in the study *** suggest that intracontinental mountain building in the Pamir-Tian Shan convergence zone should be attributed to the crustal shortening caused by folding and thrusting as well as block rotation related to strike-slip faulting within the india-eurasia collision system.

关键词： Late Cenozoic Slip partitioning Intracontinental mountain building Pamir-Tian Shan convergence zone india-eurasia collision

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