Evolution of eastern Asia river systems reconstructed by the mineralogy and detrital-zircon geochronology of modern Red River and coastal Vietnam river sand
Evolution of eastern Asia river systems reconstructed by the mineralogy and detrital-zircon geochronology of modern Red River and coastal Vietnam river sand
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DOI：
10.1016/j.earscirev.2023.104572
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发表时间：
2023-09
影响因子：
12.1
通讯作者：
Jie He;E. Garzanti;Tao Jiang;M. Barbarano;Entao Liu;Si Chen;Yuantao Liao;Xiaopeng Li;Hua W
中科院分区：
文献类型：
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作者：
Jie He;E. Garzanti;Tao Jiang;M. Barbarano;Entao Liu;Si Chen;Yuantao Liao;Xiaopeng Li;Hua W
新生代青藏高原的隆升导致了东亚水系的彻底重组。揭开红河的演变仍然不清楚，以前是一个更大的古河流系统，代表了一个重要的一步，更好地了解气候和造山运动之间的相互作用，在这个极端构造活跃的地区的地球。本文介绍了中国南海红河沉积物、西藏现代河流上游沉积物、内陆盆地地层序列和近海盆地岩心的岩石学、重矿物、Sr和Nd同位素、U-Pb碎屑-锆石年代学资料，为研究东南亚新生代水系演化提供了新的资料。晚白垩世流经四川、楚雄、思茅和呼拉特盆地的向南流的横贯大陆古河流在古近纪因区域隆升而中断。珍珠古河流在晚第三纪开始发展为北、东古河流的汇合，并开始向西切割，最终到达青藏高原东南部边缘。红古河也逐渐演变成一个更大的集水区通过古近纪，包括金沙古河和支流排水扬子地块西部。中新世早中期，金沙江在第一弯曲被长江捕获，红色古河流最终失去了西藏源头。红河和珠江的水系结构在中新世中期开始形成。
The Cenozoic rise of the Tibetan Plateau has caused a thorough reorganization of the eastern Asia river network. Unravelling the still unclear evolution of the Red River, formerly a larger paleoriver system, represents one essential step towards a better understanding of the interaction between climate and mountain building in this extremely tectonically active region of the Earth. We here present original and compiled petrographic, heavy-mineral, Sr and Nd isotope, and Usingle bondPb detrital-zircon geochronological data from Red River sediments, upper reaches of modern rivers sourced in Tibet, stratigraphic successions of inland basins, and cores drilled in offshore basins in the South China Sea, to provide new light on the Cenozoic drainage evolution across southeast Asia. The south-flowing transcontinental paleoriver that flowed through the Sichuan, Chuxiong, Simao and Khorat basins in the latest Cretaceous was disrupted in the Paleogene in response to regional uplift. The Pearl paleoriver then began to develop as the joint Bei and Dong paleorivers and started to incise westward to eventually reach the margin of the southeastern Tibetan Plateau in the Neogene. The Red paleoriver also progressively evolved into a larger catchment through the Paleogene, incorporating the Jinsha paleoriver and a tributary draining the western Yangtze block. In the early-middle Miocene, the Red paleoriver eventually lost its Tibetan headwaters when the Jinsha River was captured by the Yangtze River at the First Bend. The present drainage configuration of the Red and Pearl rivers started to develop in the mid-Miocene.