Age of Initiation of the India‐Asia Collision in the East‐Central Himalaya

Zhu, Bin; Kidd, William; Rowley, David B.; Currie, Brian S.; Shafique, Naseer A.

doi:10.1086/428805

Cited by 311 publications

(238 citation statements)

References 68 publications

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“…Although little of the intraoceanic system is preserved, its collision is clearly recorded along the suture zone in detrital sediments. Coarsegrained clastic sediments derived from the northern India and supra-subduction zone terranes accumulated within the collision zone and obduction is heralded by the first arrival ophiolitic detritus shed into latest Paleocene marine sediments on the northernmost margin of India (Ding et al 2005;Zhu et al 2005). Ophiolite emplacement was also coincident with the development of widespread melange along the northern margin of India (Liu 2001).…”

Section: Discussionmentioning

confidence: 99%

Shoshonites in Southern Tibet Record Late Jurassic Rifting of a Tethyan Intraoceanic Island Arc

Aitchison¹,

McDermid²,

Ali³

et al. 2007

The Journal of Geology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. A B S T R A C TDetailed field mapping combined with a petrologic and geochemical investigation of the Zedong terrane within the Yarlung Tsangpo suture zone provides insights to the evolution of now mostly subducted portions of Tethys during the Late Jurassic. The terrane is dominated by volcanic rocks of shoshonitic affinity, which were erupted in a submarine oceanic island arc setting. The volcanic island arc was built on a basement of oceanic crust, and the shoshonites locally overlie a thin section of pillowed island arc tholeiites and red ribbon-bedded radiolarian cherts. Geochemistry of the shoshonites suggests that their development occurred in a setting analogous to that of Late Miocene to Early Pliocene Fiji and was associated with an arc rifting. We speculate that this event may have been a far-field response to developments associated with Gondwana breakup.

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Section: Discussionmentioning

confidence: 99%

Shoshonites in Southern Tibet Record Late Jurassic Rifting of a Tethyan Intraoceanic Island Arc

Aitchison¹,

McDermid²,

Ali³

et al. 2007

The Journal of Geology

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“…This deformation phase predates the India-Asia collision and the final closure of the Neo-Tethys Ocean between the two continental masses at 50.5 Ma (Green et al 2008). We define the final India-Asia collision as the timing of the final marine sedimentation (planktonic foraminifera zone P8; shallow benthic zone SBZ10; Green et al 2008) in the suture zone and along the north Indian plate margin (Garzanti et al 1987;Searle et al 1988Searle et al , 1997bRowley 1998;Zhu et al 2005;Green et al 2008). Ophiolite obduction southward onto the passive margin of Indian preceded India-Asia collision and most probably occurred during the Late Cretaceous-Palaeocene (Searle et al 1988(Searle et al , 1997b.…”

Section: Pre-collision Thickeningmentioning

confidence: 99%

“…The India-Asia collision itself must have been a continuing process since the Late Cretaceous-Early Palaeocene obduction of ophiolites onto the Indian passive continental margin and initial contact between Indian and Asian crust, through to final withdrawal of the Tethyan Ocean with ending of marine sedimentation in the Indus-Yarlung Tsangpo suture zone. The final marine sediments in the suture zone and along the northern margin of India have been precisely dated at 50.5 Ma (planktonic foraminifera zone P8 and shallow benthic zone SBZ10; Garzanti et al 1987;Rowley 1998;Zhu et al 2005;Green et al 2008). In this paper we equate the Late Ypresian (Early Eocene) timing of final marine sedimentation along the suture zone as defining the India-Asia collision.…”

mentioning

confidence: 99%

Crustal–lithospheric structure and continental extrusion of Tibet

Searle

Elliott

Phillips

et al. 2011

JGS

240

154

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Crustal shortening and thickening to c. 70-85 km in the Tibetan Plateau occurred both before and mainly after the c. 50 Ma India-Asia collision. Potassic-ultrapotassic shoshonitic and adakitic lavas erupted across the Qiangtang (c. 50-29 Ma) and Lhasa blocks (c. 30-10 Ma) indicate a hot mantle, thick crust and eclogitic root during that period. The progressive northward underthrusting of cold, Indian mantle lithosphere since collision shut off the source in the Lhasa block at c. 10 Ma. Late Miocene-Pleistocene shoshonitic volcanic rocks in northern Tibet require hot mantle. We review the major tectonic processes proposed for Tibet including 'rigid-block', continuum and crustal flow as well as the geological history of the major strikeslip faults. We examine controversies concerning the cumulative geological offsets and the discrepancies between geological, Quaternary and geodetic slip rates. Low present-day slip rates measured from global positioning system and InSAR along the Karakoram and Altyn Tagh Faults in addition to slow long-term geological rates can only account for limited eastward extrusion of Tibet since Mid-Miocene time. We conclude that despite being prominent geomorphological features sometimes with wide mylonite zones, the faults cut earlier formed metamorphic and igneous rocks and show limited offsets. Concentrated strain at the surface is dissipated deeper into wide ductile shear zones.

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“…The presence of Cr-spinel in sedimentary rocks is generally interpreted as an indicator of ophiolite erosion (Stevens 1970;Pober and Faupl 1988;Cookenboo et al 1997;Ganssloser 1999;Zhu et al 2005;Meinhold et al 2007). In the Qilian Orogen, three potential Cr-spinel sources are present: the Alaskan-type Zhamashi mafic intrusions along the north margin of the Central Qilian Block (Tseng et al 2009), the Ordovician island-arc basaltic rocks (Hsu and Shau 2002), and the mafic-ultramafic bodies constituting the North Qilian ophiolites (Feng and He 1996;Zhang et al 1998b;Tseng et al 2007;Xia and Song 2010).…”

Section: Discussionmentioning

confidence: 99%

From Subduction to Collision in the Northern Tibetan Plateau: Evidence from the Early Silurian Clastic Rocks, Northwestern China

Yang

Cawood³

et al. 2012

The Journal of Geology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. The University of Chicago Press A B S T R A C TThe Qilian Orogen records early Paleozoic collisional suturing of the Qaidam Block and the Central Qilian Block to the North China Craton. The composition and U-Pb age of detrital zircons and the composition of Cr-spinels from the Early Silurian Lujiaogou and Angzanggou formations in the northern part of orogen indicate derivation from evolving oceanic and continental source terranes. Heavy-mineral chemistry indicates the incorporation of suprasubduction zone-type ophiolitic detritus in addition to continent-derived material. Integrating these chemical and age data with regional data on the duration of subduction-related magmatic activity, syn-and postcollisional granitic rocks, and high-pressure metamorphic rocks constrains the transformation from oceanic subduction to continental collision to 450-440 Ma. The collision resulted in a flood of detritus into the northern part of the orogen from the Central Qilian Block, which masked input from the intervening magmatic arc, implying rapid exposure of the block.

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Age of Initiation of the India‐Asia Collision in the East‐Central Himalaya

Cited by 311 publications

References 68 publications

Shoshonites in Southern Tibet Record Late Jurassic Rifting of a Tethyan Intraoceanic Island Arc

Shoshonites in Southern Tibet Record Late Jurassic Rifting of a Tethyan Intraoceanic Island Arc

Crustal–lithospheric structure and continental extrusion of Tibet

From Subduction to Collision in the Northern Tibetan Plateau: Evidence from the Early Silurian Clastic Rocks, Northwestern China

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