Indus-Yarlung suture zone
The Indus-Yarlung suture zone or the Indus-Yarlung Tsangpo suture is a tectonic suture in southern Tibet and across the north margin of the Himalayas which resulted from the collision between the Indian plate and the Eurasian plate starting about 52 Ma.[1] The north side of the suture zone is the of the Karakoram-Lhasa Block. The rocks of the suture zone consist of an ophiolite mélanges composed of Neotethys oceanic crustal flyschs and ophiolites; the : which are basalts, dacites and minor radiolarian cherts – the remains of a mid- to late Mesozoic volcanic island arc; and the Indus Molasse which are an Eocene or later continental clastic sediments.[2]
The ophiolite which can be found here is not a remnant of a very big ocean, but of a small back-arc basin structure.[3]
See also[]
- Geology of the Himalaya – Origins and structure of the mountain range
References[]
- ^ Age of Initiation of the India-Asia Collision http://geosci.uchicago.edu/~rowley/Rowley/Collision_Age.html
- ^ Dèzes, Pierre, 1999, Major tectonic subdivisions of the Himalaya "Archived copy". Archived from the original on 2010-01-06. Retrieved 2010-02-24.CS1 maint: archived copy as title (link)
- ^ Bédard, É.; Hébert, R.; Guilmette, C.; Lesage, G.; Wang, C.S.; Dostal, J. (2009). "Petrology and geochemistry of the Saga and Sangsang ophiolitic massifs, Yarlung Zangbo Suture Zone, Southern Tibet: Evidence for an arc–back-arc origin". Lithos. 113 (1–2): 48–67. Bibcode:2009Litho.113...48B. doi:10.1016/j.lithos.2009.01.011.
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- Plate tectonics
- Geology of the Himalaya
- Suture zones
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