The onset of India–Asia continental collision: Early, steep subduction required by the timing of UHP metamorphism in the western Himalaya

Leech, M. L.; Singh, Sandeep; Jain, Arvind K.; Klemperer, S. L.; Manickavasagam, R. M.

doi:10.1016/j.epsl.2005.02.038

Cited by 511 publications

(276 citation statements)

References 71 publications

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“…P-wave tomography identifies high-velocity zones beneath the Himalayan collision zone that can be traced to >1000 km deep in the mantle; these must be stilldescending slabs of subducted Tethys oceanic and Indian continental lithosphere (Van der Voo et al 1999). We also have direct evidence that at least some Indian continental crust is deeply subducted, because ultra-high pressure (UHP) metamorphic terranes -which contain metamorphic coesite, diamond, unusual Si-rich garnets, and/or K-bearing pyroxenes -are known from near Nanga Parbat and Tso Morai in the Himalayas (O'Brien et al 2001;Kaneko et al 2003;Leech et al 2005). UHP minerals demonstrate that these continental fragments descended to at least 90-140 km depth (Ernst 2006).…”

Section: Continent Subductionmentioning

confidence: 99%

Yin and yang of continental crust creation and destruction by plate tectonic processes

Stern

Scholl

2010

International Geology Review

194

107

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Earth's continental crust today is both created and destroyed by plate tectonic processes, a balance that is encapsulated by the traditional Chinese concept of yin-yang, whereby dualities act in concert as well as in opposition. Yin-yang conceptualizations of crustal growth and destruction are mostly related to plate tectonics; both occur mostly at subduction zones, by arc magmatic creation and by subduction removal. Crust is also created and destroyed by processes unrelated to plate tectonics, including losses by lower crust foundering and additions at hotspots. At present, creation and destruction of continental crust is either in balance (∼3.2 km 3 /year, or 3.2 AU) or more crust is being destroyed than created; the uncertainty comes from unknown deep losses of continental crust at collision zones and due to lower crustal foundering. The yinyang creation-destruction balance changes over a supercontinent cycle, with crustal growth being greatest during supercontinent break-up due to high magmatic flux at new arcs and crustal destruction being greatest during supercontinent amalgamation due to subduction of continental material and increased sediment flux due to orogenic uplift. These conclusions challenge the widely held view that continental crust volume has increased over time due to plate tectonic activity; it is just as likely that this volume has decreased.

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Section: Continent Subductionmentioning

confidence: 99%

Yin and yang of continental crust creation and destruction by plate tectonic processes

Stern

Scholl

2010

International Geology Review

194

107

View full text Add to dashboard Cite

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“…Also shown in (a) are the data for granitoid rocks from the Gangdese belt (i.e., Debon et al, 1986;Harris et al, 1988b;Wen et al, 2008a;Huang et al, 2010) and from the Northern magmatic belt (i.e., Zhu et al, 2009b;Zhang et al, 2010b;Huang et al, 2012), and the Nianbo Formation of the Linzizong volcanic rocks in Tibet (i.e., Mo et al, 2008;Xie et al, 2011;Lee et al, 2012). In (b), the pink and gray fields note those from the Gangdese belt and the Northern magmatic belt ( 1987; Searle et al, 1987;Leech et al, 2005;Najman et al, 2010;Wang et al, 2011). In combination with other data from Klootwijk et al (1992), Hodges (2000), Najman et al (2005Najman et al ( , 2010 and Xu et al (2008), it is most likely that the India-Asia collision commenced at~50-55 Ma or later.…”

Section: A Petrogenetic Model For Neotethyan Subductionmentioning

confidence: 99%

“…Searle et al, 1987;Klootwijk et al, 1992;Rowley, 1996;Hodges, 2000;Guillot et al, 2003;Leech et al, 2005;Najman et al, 2005;Garzanti, 2008;Xu et al, 2008;Najman et al, 2010;Wang et al, 2011;Sun et al, 2012); and (3) the Late Eocene (~34-42 Ma) (e.g., Aitchison and Davis, 2001;Aitchison et al, 2007Aitchison et al, , 2008Xia et al, 2009;Tan et al, 2010). To address some of the unresolved issues above, this paper presents a set of new zircon U-Pb geochronological, elemental and Sr-Nd-Hf isotopic data for the gneissic granite and leucogranite from the Nabang metamorphic zone in the Yingjiang area (West Yunnan, SW China).…”

Section: Introductionmentioning

confidence: 99%

Petrogenesis of the early Eocene I-type granites in west Yingjiang (SW Yunnan) and its implication for the eastern extension of the Gangdese batholiths

Wang

et al. 2014

Gondwana Research

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“…In the Himalayas, UHP metamorphism and deep continental subduction is dated at c. 50 Myr (ref. 47). Stable isotope paleoaltimetry shows that central Tibet has been at an elevation similar to its modern elevation since c. 49), providing evidence that a high relief can be sustained for at least 40 Myr postdating subduction of the continental margin.…”

Section: Article Nature Communications | Doi: 101038/ncomms6198mentioning

confidence: 99%

Ediacaran 2,500-km-long synchronous deep continental subduction in the West Gondwana Orogen

et al. 2014

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The deeply eroded West Gondwana Orogen is a major continental collision zone that exposes numerous occurrences of deeply subducted rocks, such as eclogites. The position of these eclogites marks the suture zone between colliding cratons, and the age of metamorphism constrains the transition from subduction-dominated tectonics to continental collision and mountain building. Here we investigate the metamorphic conditions and age of high-pressure and ultrahigh-pressure eclogites from Mali, Togo and NE-Brazil and demonstrate that continental subduction occurred within 20 million years over at least a 2,500-km-long section of the orogen during the Ediacaran. We consider this to be the earliest evidence of large-scale deep-continental subduction and consequent appearance of Himalayan-scale mountains in the geological record. The rise and subsequent erosion of such mountains in the Late Ediacaran is perfectly timed to deliver sediments and nutrients that are thought to have been necessary for the subsequent evolution of sustainable life on Earth.

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The onset of India–Asia continental collision: Early, steep subduction required by the timing of UHP metamorphism in the western Himalaya

Cited by 511 publications

References 71 publications

Yin and yang of continental crust creation and destruction by plate tectonic processes

Yin and yang of continental crust creation and destruction by plate tectonic processes

Petrogenesis of the early Eocene I-type granites in west Yingjiang (SW Yunnan) and its implication for the eastern extension of the Gangdese batholiths

Ediacaran 2,500-km-long synchronous deep continental subduction in the West Gondwana Orogen

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