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Deciphering the stable isotope (δ18O, δ13C) record of Holocene oyster shells from the Yangtze River Delta, China

High-resolution stable isotope (δ18O, δ13C) data of 7000 to 6000 year-old oyster shells from the Yangtze River Delta constitute a combined record of climatic and oceanographic patterns (see Alberti et al., 2024). The results reflect prominent seasonal changes in temperature, precipitation, and river discharge. Summer months experienced warm temperatures and a distinct increase in rainfalls and river discharge. In contrast, winter months were dry and characterized by cool temperatures causing growth breaks in the oyster shells. Furthermore, the stable isotope analyses indicate regular summer upwelling in the study area during the mid-Holocene. Finally, the presented palaeo-proxy data offer the opportunity to evaluate available climate models for the region and thereby improve predictions for the future.

Alberti, M., Veiga, S.F., Chen, B., Hu, L., Fang, Z., Zhou, B., Pan, Y. 2024. The Yangtze River Delta experienced strong seasonality and regular summer upwelling during the warm mid-Holocene. Communications Earth & Environment 5: 492.

Details

Author
Matthias* Alberti1, Sandro F. Veiga2, Bo Chen3, Liang Hu4, Zheng Fang5, Baochun Zhou6, Yanhong Pan5
Institutionen
1Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Germany; 2School of Atmospheric Sciences and Key Laboratory of Mesoscale Severe Weather/Ministry of Education and Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, China;Nanjing-Helsinki Institute in Atmospheric and Earth System Sciences, Nanjing University, Suzhou, China; 3State Key Laboratory of Palaeobiology and Stratigraphy and Center for Excellence in Life and Paleoenvironment, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China; 4Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, China; 5State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Centre for Research and Education on Biological Evolution and Environment and Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, China; 6Shanghai Natural History Museum, Shanghai, China
Veranstaltung
Geo4Göttingen 2025
Datum
2025
DOI
10.48380/r69y-3710

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