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. 2017 Jul 19;7:5848. doi: 10.1038/s41598-017-06285-x

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Direct comparison between proxies from the Urluia and Vlasca sections represented by U-ration, fine particles (<5 µm) and χ_fd (values are normalized), and their comparison with a stacked climatic record from northern China (CHILOMOS³⁴) and δ¹⁸O record from Dim Cave³⁶ over the past 55,000 years. The straight yellow line represents the timing of the Campanian Ignimbrite/Y-5 tephra deposition. Black arrows indicate a trend of general continentalization.