Collision-uplift evolution of Qinghai-Tibetan Plateau and sandstone-hosted Ura-nium metallogeny in Northwest China and its adjacent Central Asia region
Collision-uplift evolution of Qinghai-Tibetan Plateau and sandstone-hosted Ura-nium metallogeny in Northwest China and its adjacent Central Asia region
The collision uplift and evolution of the Qinghai-Tibetan Plateau is one of the most popular research topics in geosciences nowadays.The evolution process of the collision uplift of the Qinghai-Tibetan Plateau has formed a unique sedimentary basin and mountain system in the Northwest of China and its neighboring region in Central Asia.In the Mesozoic and Cenozoic sedimentary basins the world-famous sandstone-type uranium megaprovince was formed,and the discovered uranium resources reached million tons.This paper deals with the relationship be-tween the collision-uplift evolution of the Qinghai-Tibetan Plateau and the formation process and characteristics of the basin-mountain system in Northwest China and the adjacent region of Central Asia,the formation response and transformation of sedimentary basins,the structural evolution and the formation of sandstone-type uranium deposits as well.The characteristics and models of different types of sandstone-hosted uranium deposits,uranium metallogenic events,and spatial and temporal distribution are expounded.The collision-uplift evolution of the Qinghai-Tibetan Plateau has an important constraint on the formation of sandstone-type uranium deposits.Due to the Qinghai-Tibet Plateau uplift remote effect,the tectonic activity in Central Asia is relatively weak,a large scale of sandstone-hosted uranium mineralization happened in relatively shallow depth,and shallow sandstone type ura-nium deposits are the focus of exploration.The orogenic belt around the Qinghai-Tibet Plateau in China is strong-ly affected by the collision-uplift of the Qinghai-Tibetan.Both shallow and the deep-buried sandstone-type urani-um deposits are the next exploration targets.
关键词
碰撞隆升/砂岩铀矿/沉积盆地/青藏高原/中亚地区
Key words
collision uplift/sandstone-type uranium deposit/sedimentary basin/Qinghai-Tibetan Plateau/Central Asia
维普
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