An integrated chronological study on the Quaternary sedimentary sequences of the Yangtze River delta, China,Palaeogeography, Palaeoclimatology, Palaeoecology

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An integrated chronological study on the Quaternary sedimentary sequences of the Yangtze River delta, China
Palaeogeography, Palaeoclimatology, Palaeoecology ( IF 3 ) Pub Date : 2024-03-08 , DOI: 10.1016/j.palaeo.2024.112135
Guomin Li , Wenting Ji , Guoqiao Xiao , Huiru Xu , Yuan Liang , Yiming Lai , Jianguo Du , Xiangqian Li , Jianqiang Wu

The sedimentary sequences of the Yangtze River delta comprise important Quaternary records of tectonics, sea-level oscillation, and climatic change; however, analysis is hampered by a lack of a reliable chronological framework. In this paper, we present an integrated chronology for two sedimentary sequences (core ZKW2 and ZKW4) on the southern side of the Yangtze River delta, based on magnetostratigraphy and absolute methods (OSL, C, and ESR dating). The basal ages of the core ZKW2 and ZKW4 are ca. 2.25 Ma and 2.96 Ma, respectively. The integrated chronology indicates significant increases in the sedimentary accumulation rate at ∼0.15 Ma, rather than the Matuyama-Brunhes boundary as indicated by magnetostratigraphy alone. The observed sedimentary transition is possibly controlled by regional subsidence of the Zhe-Min Uplift, and climate evolution during the last interglacial period.

更新日期：2024-03-08

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