Filters








281 Hits in 9.6 sec

Lithospheric architecture and deformation of NE Tibet: New insights on the interplay of regional tectonic processes

Xiaoyu Guo, Rui Gao, Sanzhong Li, Xiao Xu, Xingfu Huang, Haiyan Wang, Wenhui Li, Shujuan Zhao, Xiyao Li
2016 Earth and Planetary Science Letters  
Shearer Keywords: deep seismic reflection image residual gravity NE Tibet lithospheric architecture deformation pattern GPS measurements indicate rapid lateral extrusion of the NE Tibetan Plateau, which  ...  The overall crustal architecture obtained in this study provides spatial context for the neotectonic evolution of NE Tibet and helps constrain the interplay of geologic and geodynamic processes affecting  ...  We thank colleagues who collected seismic data used in this study.  ... 
doi:10.1016/j.epsl.2016.05.045 fatcat:ll4zha3brvfehkzkdguvqdox5m

Foreword

Jingsui Yang, Haibing Li, Paul T. Robinson
2009 Journal of Earth Science  
(this issue) presented a primary image on the crustal structure of the central uplift area of the Qiangtang terrane in the Tibet plateau.  ...  constraints on the crustal thickening processes in the Danba area of the Songpan-Ganze orogenic belt.  ...  ACKNOWLEDGMENTS This special issue was organized by the Tibet Center for Continental Dynamics, Chinese Academy of Geological Sciences.  ... 
doi:10.1007/s12583-009-0020-5 fatcat:vkh56j3phfd4pjzupdfcww2jy4

Lithospheric structure and deep earthquakes beneath India, the Himalaya and southern Tibet

Keith Priestley, James Jackson, Dan McKenzie
2008 Geophysical Journal International  
We re-examine the seismic structure and seismicity of the Himalayan-Tibetan collision zone, recalculating earthquake depths in velocity structures that are consistent with seismic receiver functions and  ...  In particular, recent studies have argued that microearthquakes in the uppermost mantle beneath Nepal and some earthquakes at 80-90 km depth, close to the Moho in SE and NW Tibet, reinforce the conventional  ...  Reviews by C. Ebinger, G Hirth and an anonymous referee helped to improve the manuscript considerably. A number of the figures were prepared using Generic Mapping Tool (Wessel & Smith 1995) .  ... 
doi:10.1111/j.1365-246x.2007.03636.x fatcat:3vbtpmqy5vcr7e4p646nqecm2q

Geophysical-petrological model of the crust and upper mantle in the India-Eurasia collision zone

Lavinia Tunini, Ivone Jiménez-Munt, Manel Fernandez, Jaume Vergés, Antonio Villaseñor, Massimiliano Melchiorre, Juan Carlos Afonso
2016 Tectonics  
of the India-Eurasia collision zone • Identified lateral variations in the lithospheric mantle compositions • Different lithospheric domains have been identified in the India-Eurasia collision zone  ...  We also model a preexisting profile in the eastern India-Eurasia collision zone and discuss the along-strike variations of the lithospheric structure.  ...  Both profiles show laterally varying lithospheric mantle structures in terms of lithospheric thickness, lithospheric mantle density, temperature, and composition.  ... 
doi:10.1002/2016tc004161 fatcat:i5pent6rmravjizbfum22bjevq

A tale of two orogens: Crustal processes in the Proterozoic Trans-Hudson and Grenville Orogens, eastern Canada

F. A. Darbyshire, I. D. Bastow, L. Petrescu, A. Gilligan, D. A. Thompson
2017 Tectonics  
Crustal structure in the northern THO strongly resembles the lower crustal structure of the HKTO, suggesting that Moho depths may have reached 60-70 km when the orogen was active.  ...  The Precambrian core of North America was assembled in the Proterozoic by a series of collisions between Archean cratons.  ...  plate tectonics was already in operation on the Earth by the Paleoproterozoic.  ... 
doi:10.1002/2017tc004479 fatcat:rjk5me2l5vdprn6cp3wu37ploe

Oblique convergence and strain partitioning in the outer deformation front of NE Himalaya

Dibyashakti Panda, Bhaskar Kundu, M. Santosh
2018 Scientific Reports  
In the NE-Himalaya (composed of Bhutan and Arunachal), the motion between India and southern Tibet is again oblique with respect to structural trend of the arc (Fig. 1) .  ...  It has been proposed that in the NW-Himalaya, the motion between India and southern Tibet is oblique with respect to the structural trend, which is partitioned between right-lateral strike-slip motion  ...  We identify that ~7 mm/yr dextral strike-slip motion is absorbed by the Naga thrust.  ... 
doi:10.1038/s41598-018-28774-3 pmid:30002418 pmcid:PMC6043504 fatcat:qibf25snbrbgxbdtkjejynmjhi

Seismic Evidence for Lateral Asthenospheric Flow Beneath the Northeastern Tibetan Plateau Derived From S Receiver Functions

Qiang Xu, Shunping Pei, Xiaohui Yuan, Junmeng Zhao, Hongbing Liu, Hongwei Tu, Shuze Chen
2019 Geochemistry Geophysics Geosystems  
We present detailed lithospheric images of the NE Tibetan Plateau by applying the depth migration technique to S receiver functions derived from 113 broadband stations.  ...  In addition, our observations of a thin lithosphere with thickness of 107-115 km beneath the Songpan-Ganzi terrane and the west Qinlin orogen greatly facilitate the process of underlying lateral asthenospheric  ...  We are very grateful to Zhigang Shao, Gang Li (Wessel & Smith, 1995) to plot figures and the Seismic Handler software (Stammler, 1993) to perform the waveform data processing.  ... 
doi:10.1029/2018gc007986 fatcat:5rreacd6hvamtaphta7xmw2rni

The fate of the Indian lithosphere beneath western Tibet: Upper mantle elastic wave speed structure from a joint teleseismic and regional body wave tomographic study

Ayda S. Razi, Steven W. Roecker, Vadim Levin
2016 Physics of the Earth and Planetary Interiors  
In view of the heterogeneous velocity 533 structure imaged along the Himalayas and the southern part of Tibet, we speculate that 534 this structure may be inherited by the future stable continent when  ...  Secondly, our previous work on the crustal structure of the region (Razi 455 et al., 2014) has identified a strong fast anomaly immediately below the crust.  ... 
doi:10.1016/j.pepi.2015.12.001 fatcat:kszfmm5upngsdhud7lesgu7eue

Active structures of the Himalayan-Tibetan orogen and their relationships to earthquake distribution, contemporary strain field, and Cenozoic volcanism

Michael Taylor, An Yin
2009 Geosphere  
The main product of this study is a compilation of active structures that came from those documented in the literature and from our own interpretations based on satellite images and digital topographic  ...  The active tectonic map provides a basis to evaluate whether the syncollisional late Cenozoic volcanism in Tibet was spatially related to the distribution and development of the active faults in the same  ...  (3) Are there signifi cant basal tractions in the lower crust or upper mantle, and if so, is this process causing signifi cant loading on upper crustal structures?  ... 
doi:10.1130/ges00217.1 fatcat:q3xmr2g6yjgp3k5wlldkctjgnq

Active structures of the Himalayan-Tibetan orogen and their relationships to earthquake distribution, contemporary strain field, and Cenozoic volcanism

Michael Taylor
2009 Geosphere  
The main product of this study is a compilation of active structures that came from those documented in the literature and from our own interpretations based on satellite images and digital topographic  ...  The active tectonic map provides a basis to evaluate whether the syncollisional late Cenozoic volcanism in Tibet was spatially related to the distribution and development of the active faults in the same  ...  (3) Are there signifi cant basal tractions in the lower crust or upper mantle, and if so, is this process causing signifi cant loading on upper crustal structures?  ... 
doi:10.1130/ges00217.s1 fatcat:jy4dc6jnefcstf6rgillunvfyu

New views on the structure and rheology of the lithosphere

J. JACKSON, D. McKENZIE, K. PRIESTLEY, B. EMMERSON
2008 Journal of the Geological Society  
Over the last 10 years a series of developments have led to a new understanding of what controls the variations in lithosphere strength, structure and evolution that produce dramatic contrasts between  ...  This paper summarizes, in one place, the essential stages in the evolution of the relevant ideas and observations that have led to this situation.  ...  The low velocity of the uppermost mantle shallower than 150 km in northern Tibet is also clear in this image.  ... 
doi:10.1144/0016-76492007-109 fatcat:mi2iqgrulfaaviegbxdau4o4py

The Indo–Eurasia convergent margin and earthquakes in and around Tibetan Plateau

Yanbin WANG, Yangfan DENG, Feng SHI, Zhigang PENG
2020 Journal of Mineralogical and Petrological Sciences  
Underneath southern Tibet, the subducted Indian plate extends northward to at least the Bangong-Nujiang suture zone, with IDEQs occurring in the lower crust and the adjacent upper mantle.  ...  Some shallow events appear to be triggered by remote earthquakes and seasonal variations of ground water storage, suggesting stress levels nearing critical threshold.  ...  This work was partially supported by the US National Science Foundation EAR-1661489 and 1925920 (to Y.W.), EAR-1925165 (to Z.P.), and the Youth Innovation Promotion Association of CAS (to Y.D.).  ... 
doi:10.2465/jmps.190927 fatcat:npkgvxcucnfsjgpvmqnjzinaue

Genetic Analysis of Geothermal Resources and Geothermal Geological Characteristics in Datong Basin, Northern China

Wenlong Zhou, Xiangyun Hu, Shilong Yan, Hongdang Guo, Wei Chen, Sijing Liu, Chunyan Miao
2020 Energies  
The formation of geothermal resources in the Datong Basin is affected by the uplift of the Qinghai–Tibet Plateau and the destruction of the North China Craton.  ...  The geothermal resources in Datong Basin are formed by the combination of modern volcanic activity and strong inner-plate tectonic activities.  ...  In order to better identify the gravity and magnetic anomalies, we processed the theta map and Tilt for the gravity and magnetic data, as shown in Figure 9c -f.  ... 
doi:10.3390/en13071792 fatcat:yhgsmxwmhbhazgqelswmna4ybi

From orogenic hinterlands to Mediterranean-style back-arc basins: a comparative analysis

J.P. PLATT
2007 Journal of the Geological Society  
Vertical shortening in Tibet is limited by work required to deform the surrounding Asian lithosphere, whereas Mediterranean back-arc basins can extend at the expense of regions of thin continental or oceanic  ...  normal continental thickness; (2) thin lithospheric mantle; (3) mixed magmatism including asthenospheric, lithospheric, and crustal melts; (4) late-stage horizontal extension accompanied by vertical shortening  ...  Few structures have been identified that are clearly associated with this phase of thickening in southern and central Tibet; Tapponnier et al. (2001) suggested that it occurred largely by reactivation  ... 
doi:10.1144/0016-76492006-093 fatcat:zwhcnwwwyrbqrjikntz73nyeiy

Cenozoic shortening budget for the northeastern edge of the Tibetan Plateau: Is lower crustal flow necessary?

Richard O. Lease, Douglas W. Burbank, Huiping Zhang, Jianhui Liu, Daoyang Yuan
2012 Tectonics  
In contrast to eastern Tibet where, in the absence of significant shortening structures, crustal flow has been invoked to explain the addition of crustal material since middle Miocene time, our results  ...  may account for Cenozoic crustal thickening in northeastern Tibet.  ...  The relative contribution of these two processes in thickening the northeastern margin of Tibet is unknown.  ... 
doi:10.1029/2011tc003066 fatcat:equbykivfnafvptkofv63kap2y
« Previous Showing results 1 — 15 out of 281 results