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Global CO_(2)concentration change induced by“trigger-connectors”model,especially since about 24 Ma?A preliminary hypothesis

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地球环境学报 2024年第4期15卷 545-565页

作者： LI Leyi CHANG Hong State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Xi’an Institute for Innovative Earth Environment Research Xi’an 710061China Yunnan Key Laboratory of Earth System Science Yunnan UniversityKunming 650500China CAS Center for Excellence in Quaternary Science and Global Change Xi’an 710061China

Background,aim,and scope The tectonic uplift of the Cenozoic Tibetan Plateau has produced a chain effect,which is an excellent location for Earth system science research,and its uplift process,mechanism and environmental effects are the hot spot and frontier of the current ***“Tibetan Plateau uplift-weathering-CO_(2)concentration-global climate change”model was put forward by Raymo and Ruddiman to interpret the Late Cenozoic climate ***,there are still some questions suspended,such as does the weathering of the Tibetan Plateau have the ability to control the global climate?How to explain the modern-like global CO_(2)concentration starting at about 24 Ma?Here,a short space was taken to present a brainstorm about the above questions on account of existing geological pieces of *** and methods In this paper,we integrate the formation and evolution of the Yangtze River and Pearl River,the origin and development of the Asian inland aridification-monsoon system,the Cenozoic tectonic uplift process of the Tibetan Plateau,and the westerly winds to discuss and analyze the relationship between the Cenozoic CO_(2)concentration changes and the uplift of the Tibetan Plateau and why the CO_(2)concentration similar to the present was formed at about 24 *** Similar correspondence of the surface uplift history of Xizang,other global mountains,and the declining CO_(2)concentration could support the theory Tibetan Plateau weathering inf luences CO_(2)*** from 24 Ma,the most important character was the uplift and erosion of Xizang and Himalaya,collaborating with Ocean Iron Fertilization(OIF)together as an entity to control the atmospheric CO_(2)concentration because the great Asian rivers,Asian monsoons,and westerlies connected Xizang and surrounded seas together through materials *** Paleogeographic reconstructions from 40 Ma to 20 Ma illustrate that the main topographic change occurred in the Andes,Cord

关键词： Tibetan Plateau CO_(2)concentration weathering trigger-connectors

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