PANGAEA_991457 Manganese/Iron ratio of sediment core JB-A from Lake Jingpo, northeast China Katsuta, Nagayoshi Manganese/Iron ratio of sediment core JB-A from Lake Jingpo, northeast China 2026-03-31 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.991457 Investigator Nagayoshi Katsuta nkatsuta@gifu-u.ac.jp Earth Science DEPTH, sediment/rock AGE Iron oxide, Fe2O3 Iron Manganese oxide Manganese Manganese/Iron ratio geoscientificInformation 14C dating CIA JB-A Lake Jinpo Northeast China Piston corer Sedimentary geochemistry X-ray fluorescence (XRF), glass-bead quantitative method 2012-08-01 2012-08-31 Complete 43.986897 43.986897 129.031739 129.031739 0.02 m (DEPTH, sediment/rock) 9.76 m (DEPTH, sediment/rock) unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 2440 data points text/tab-separated-values Katsuta, Nagayoshi; et al. (submitted): East Asian winter monsoon evolution in northeast China during the mid-to late Holocene and its impact on Chinese civilization. Katsuta, Nagayoshi; Naito, Sayuri; Sano, Naomi; Ochiai, Shinya; Saito-Kokubu, Yoko; Ogita, Yasuhiro; Nishio, Tomohiro; Hasebe, Noriko; Nagao, Seiya; Kawakami, Shin-ichi; Shen, Ji (2026): East Asian summer monsoon evolution in northeast China since the mid-Holocene reconstructed from chemical weathering intensity of Lake Jingpo sediments. Global and Planetary Change, 105441, https://doi.org/10.1016/j.gloplacha.2026.105441

Due to changing East Asian summer monsoon (EASM) and East Asian winter monsoon (EAWM) during Holocene, the sediment cores were collected in Lake Jingpo in northeast China and were investigated to understand the variability of EASM precipitation and its possible mechanism. Sediment cores JB-A (9.76 m) and JPS-1 (0.32 m) were collected in August 2012 using the piston corer and gravity core sampler, respectively. The ages of JB-A and JPS-1 cores are 6092 years and 100 years based on the14C dates and the combined ages of excess 210Pb and 137Cs. Geochemical proxies of EASM precipitation were reconstructed by elemental compositions such as SiO2, TiO2, Al2O3, Fe2O3, MnO, CaO, Na2O, K2O, P2O5, CIA, and LOI, analyzed with the glass-bead XRF quantitative method. Multi-proxies of EAWM wind strength were reconstructed from the Mn/Fe ratio, grain-sizes, and biogenic silica, analyzed with the glass-bead XRF quantitative method, the laser diffraction, and the ICP-AES, respectively. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.991457"! ** The study was further supported by the Japan Geographic Data Center https://www.kokudo.or.jp/grant/.

http://en.wikipedia.org/wiki/Kyr AGE https://doi.org/10.1016/j.gloplacha.2026.105441 East Asian summer monsoon evolution in northeast China since the mid-Holocene reconstructed from chemical weathering intensity of Lake Jingpo sediments PANGAEA_974362 DIF 9.4 2026-03-31 2026-04-29