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High pressure metamorphic terranes along the Bangong-Nujiang Suture Zone : ウィキペディア英語版 | High pressure metamorphic terranes along the Bangong-Nujiang Suture Zone
High pressure terranes along the ~1200 km long east-west trending Bangong-Nujiang suture zone (BNS) on the Tibetan Plateau have been extensively mapped and studied. Understanding the geodynamic processes in which these terranes are created is key to understanding the development and subsequent deformation of the BNS and Eurasian deformation as a whole. ==Introduction== With an average elevation of just above 5,000 m, the Tibetan Plateau is the largest elevated region on Earth. Explaining how such a large area (2.5 million km2)〔 can have such high elevations has perplexed geologists for some time. It is known that significant tectonic activity took place before the Indo-Asian collision as terranes were being accreted onto the Eurasian plate during the Late Jurassic-Early Cretaceous, but the extent of deformation and the influence these earlier tectonic events had on the subsequent evolution of the Tibetan Plateau is poorly understood. In search of clues, geologists have looked to the high pressure terranes outcropping along suture zones to find answers. The Bangong-Nujiang suture, in particular, features extensive high pressure terranes throughout much of its length.
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