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Published September 2005 | public
Journal Article

Late Cenozoic high-resolution magnetostratigraphy in the Kunlun Pass Basin and its implications for the uplift of the northern Tibetan Plateau


The Kunlun Pass Basin, located in the middle of the eastern Kunlun Mountains, received relatively continuous late Cenozoic sediments from the surrounding mountains, archiving great information to understand the deformation and uplift histories of the northern Tibetan Plateau. The Kunlun-Yellow River Movement, identified from the tectonomorphologic and sedimentary evolution of the Kunlun Pass Basin by Cui Zhijiu et al. (1997, 1998), is roughly coincident with many important global and Plateau climatic and environmental events, becoming a crucial time interval to understand tectonic-climatic interactions. However, the ages used to constrict the events remain great uncertainty. Here, we present the results of detailed magnetostratigraphy of the late Cenozoic sediments in the Kunlun Pass Basin, which show the basin sediments were formed between about 3.6 Ma and 0.5 Ma and the Kunlun-Yellow River Movement occurred at 1.2 to ∼0.78 Ma. The lithology, sedimentary facies and lithofacies associations divide the basin into five stages of tectonosedimentary evolution, indicating the northern Tibetan Plateau having experienced five episodes of tectonic uplifts at ∼3.6, 2.69-2.58, 1.77, 1.2, 0.87 and ∼0.78 Ma since the Pliocene.

Additional Information

© Science in China Press 2005. Received 10 June 2004. Accepted 15 March 2005. The authors would like to thanks Gao Junping, Dai Shuang, Miao Yunfa, Chang hong, Fu Kaidao, Long Xiaoyong, Sun Dong, Bai Jinfeng, Nie Junsheng and Zhang Weiling for their field-work assistances. We are grateful to Academician Zhu Rixiang for his experiment help in laboratory. This work was supported by the National Natural Science Foundation of China (Grand Nos. 40421101, 40121303, 40334038).

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October 18, 2023