Uplift of Himalaya-Tibetan Plateau, evolution of East Asian monsoon, and sedimentation in East Asian marginal seas

  • Tada Ryuji
    Department of Earth and Planetary Science, University of Tokyo

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  • ヒマラヤチベット高原の隆起, 東アジアモンスーンの発達と東アジア縁海における堆積作用

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Abstract

Significance of the linkage between tectonics and climate is the long-lasting first order question in Geology that has never been answered clearly. The linkage between the uplift of Himalaya and Tibetan Plateau [HTP] and evolution of Asian-Indian monsoon has been regarded as the best example of tectonics-climate linkage because of its potential magnitude and importance with respect to global climatic evolution during the late Cenozoic. Although previous attempts failed to test this hypothesis because of the paucity and ambiguity of the tectonic and paleoclimatic data to constrain the timing and mode of both HTP uplift and monsoon evolution, the situation changes rapidly due to recent accumulation of tectonic data in HTP region and paleoclimatic data in inland Central and East Asia as well as continuous improvement in resolution and speed of climatic simulations.<br>In this synthesis, I will briefly summarize resent progress concerning our understanding on the timing and mode of the HTP uplift and the onset and evolution of the East Asian monsoon. I will then discuss potential significance of the linkage between the onset and evolution of millennial- to orbital-scale variability of Asian monsoon and the HTP uplift. Finally, I will demonstrate the significance of the impact of the HTP uplift and monsoon evolution on paleoceanography of the East Asian marginal seas.

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