Please use this identifier to cite or link to this item:
Title: Stalagmite multi-proxy evidence of wet and dry intervals in the middle Yangtze Valley during the last glacial period
Authors: Meng Wang
Chen, Shitao
Wang, Yongjin
Zhao, Kan
Wang, Xianfeng
Liang, Yijia
Wang, Zhenjun
Zhang, Zhenqiu
Chen, Gongzhe
Keywords: Social sciences::Geography
Issue Date: 2022
Source: Meng Wang, Chen, S., Wang, Y., Zhao, K., Wang, X., Liang, Y., Wang, Z., Zhang, Z. & Chen, G. (2022). Stalagmite multi-proxy evidence of wet and dry intervals in the middle Yangtze Valley during the last glacial period. Palaeogeography, Palaeoclimatology, Palaeoecology, 586, 110764-.
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology
Abstract: There continues to be debate on the wet and dry conditions in central China due to different geological archives and proxy interpretations. This study reconstructed multi-proxy sequences spanning intervals between 65 and 40 ka using high-precision Th-230 dates, which was carried out on a stalagmite from Yongxing cave in the middle Yangtze Valley located in the Meiyu belt, China. Merely according to the petrography of the sample, Heinrich (H) 5-H6, Dansgaard–Oeschger (DO) 9-DO18 (or even secondary changes including DO15a and DO15b; DO17a, DO17b, and DO17c) were directly identified alongside the oxygen isotope record. The δ13C, trace elements, mineralogical, and bio-geochemical proxies exhibited similar millennial changes to that of the δ18O. This provided an indication of responses to millennial-scale climatic events in the karst hydrological cycle, local environment, and soil vegetation; however, the sensitivities to these events differed. Petrographic analyses of the same stalagmite including scanning electrical microscope (SEM), X-ray diffraction (XRD), fluorescence intensity, the deposition rate, and the diameter index depicted a dry-cold climate during the H events, and a wet-warm climate during the DO cycles in the middle Yangtze Valley. These results are consistent with the peat records of Dajiuhu Lake in the same area. We suggest that a combination of Atlantic Meridional Overturning Circulation (AMOC) and El Niño-Southern Oscillation (ENSO) may exert a strong influence on the Meiyu region and the related precipitation.
ISSN: 0031-0182
DOI: 10.1016/j.palaeo.2021.110764
Schools: Asian School of the Environment 
Research Centres: Earth Observatory of Singapore 
Rights: © 2021 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:ASE Journal Articles
EOS Journal Articles

Citations 20

Updated on Apr 11, 2024

Web of ScienceTM
Citations 20

Updated on Oct 27, 2023

Page view(s)

Updated on Apr 16, 2024

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.