地质学报2025，Vol.99Issue(5)：1773-1791,19.DOI:10.19762/j.cnki.dizhixuebao.2023071
连通的黄河出现在早更新世:来自华北平原郑州钻孔的约束
The connected Yellow River first emerged during the Early Pleistocene:As evidenced by the findings from the Zhengzhou borehole in the North China Plain
摘要
Abstract
Thegenesis of fluvial systems is closely related to tectonic activities and climate fluctuations.Consequently,studying the historical development of rivers is crucial for comprehending the evolutionary processes of the Earth.The formation age of the Yellow River,the largest river in northern China,remains a subject of significant controversy.To address this issue,our study focused on the Kaifeng depression,a crucial passage through which the Yellow River flows eastward to the sea.Through sedimentary drilling,paleomagnetic analysis,magnetic susceptibility measurements,grain size analysis,and detrital zircon U-Pb age dating,we obtained several significant results.The ZK02 drilling core penetrated Quaternary strata,while the bottom of the ZK04 core was dated to approximately the late Early Pleistocene.The sedimentary environment at ZK02 was primarily fluvial,whereas ZK04 exhibited a transition from fluvial and lacustrine deposition between 1.0 Ma and 0.15 Ma to loess deposition from 0.15 Ma to the present.Detrital zircon U-Pb age analysis revealed that the main sediment source for ZK04 between 1.0 Ma and 0.15 Ma was the eastern Qinling Mountains.However,since 0.15 Ma,sediment composition has been significantly influenced by loess derived from the Mangshan Mountains.In contrast,the sediment provenance of ZK02 is primarily connected to the evolution of the Yellow River.Material from the eastern Sanmen Gorge region has been present near Zhengzhou and the Yellow River Delta for at least 2.2 Ma.The connection between the upper,middle,and lower reaches of the Yellow River occurred between 1.9 Ma and 1.6 Ma,mainly driven by the humid climate conditions in the region.During the Middle Pleistocene,the Yellow River basin experienced a period of coarser sedimentation between 0.7 Ma and 0.5 Ma,primarily attributed to climate transitions.This period contributed to the formation of a distribution pattern similar to the current configuration of the Yellow River and the Bohai Sea in North China.The presence of material from the Yellow River in ZK02 at 0.15 Ma indicates that the main channel morphology of the Yellow River has not experienced significant oscillations after flowing through this region since 2.2 Ma.关键词
黄河演化/物源示踪/更新世/锆石U-Pb年龄Key words
Yellow River evolution/provenance tracing/Pleistocene/zircon U-Pb age引用本文复制引用
林旭,谢克家,刘静,宋睿智,刘海金,李庆康,任利平,赵少攀..连通的黄河出现在早更新世:来自华北平原郑州钻孔的约束[J].地质学报,2025,99(5):1773-1791,19.基金项目
本文为国家自然科学基金项目(编号41972212,42030305)、河南省地质研究院地质科技攻关项目(编号2023-909-XM018-KT01)和河南省自然资源科研项目(编号2020-6,郑财招标采购-2020-475)联合资助的成果. （编号41972212,42030305）
