Eocene. Indus Suture Zone (ISZ) (or Yarlung-Tsangpo Suture Zone) tectonic plate ISZ, also called Indus-Yarlung suture zone, Yarlung-Zangpo Suture Zone or Yarlung-Tsangpo Suture Zone, defines the zone of collision between the Indian Plate and the Ladakh Batholith (also Transhimalaya or Karakoram-Lhasa Block) to the north. This suture zone is formed by: Ophiolite Mélanges, composed of an intercalation of flysch and ophiolites from the Neotethys oceanic crust. Dras Volcanics, relicts of a Late Cretaceous to Late Jurassic volcanic island arc and consist of basalts, dacites, volcanoclastites, pillow lavas and minor radiolarian cherts Indus Molasse, a continental clastic rock sequence (with rare interbeds of marine saltwater sediments) comprising alluvial fan, braided stream and fluvio-lacustrine sediments derived mainly from the Ladakh batholith but also from the suture zone itself and the Tethys Himalaya. These molasses are post-collisional and thus Eocene to post-Eocene. Indus Suture Zone, representing the northern limit of the Himalaya. Further to the North is the so-called Transhimalaya, or more locally Ladakh Batholith, which corresponds essentially to an active margin of Andean type. Widespread volcanism in this volcanic arc was caused by the melting of the mantle at the base of the Tibetan bloc, triggered by the dehydration of the subducting Indian oceanic crust. See also Localized geology and geomorphology topics for various parts of the Himalaya are discussed on other pages: Geology of Nepal Zanskar is a subdistrict of the Kargil district, which lies in the eastern half of the Indian union territory of Ladakh. Indus River - the erosion at Nanga Parbat is causing rapid uplifting of lower crustal rocks Mount Everest Sutlej River - similar small scale erosion to the Indus Tibetan Plateau to the North (also discussed in Geography of Tibet) Paleotethys Karakoram fault system - major active fault system within the Himalaya Main Himalayan Thrust - the root thrust that underlies the Himalaya Notes References Citations Sources External links "Geology and Petrographic study of the area from Chiraundi Khola to Thulo Khola, Dhading/Nawakot district, central Nepal". MS Thesis by Gyanendra Gurung Granitoids of the Himalayan Collisional Belt. Special Edition of "The Journal of the Virtual Explorer" Reconstruction of the evolution of the Alpine-Himalayan orogeny. Special Edition of "The Journal of the Virtual Explorer" "Engineering Geology of Nepal" Wadia Institute of Himalayan Geology, Dehradun, India, main page Geology of Asia Himalayas Plate tectonics Geography of South Asia Landforms of South Asia Natural history of Asia Geology of