Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau

Significant climate shifts in the northeastern Tibetan Plateau have taken place during the Cenozoic, but the reasons behind them remain unclear. In order to unravel the mechanisms driving these climate changes, proxy data with accurate age constraint are needed. Here we present magnetostratigraphy,...

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Autores principales: Wang, Weitao, Zhang, Peizhen, Zheng, Wenjun, Zheng, Dewen, Liu, Caicai, Xu, Hongyan, Zhang, Huiping, Yu, Jingxing, Pang, Jianzhang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4944177/
https://www.ncbi.nlm.nih.gov/pubmed/27411593
http://dx.doi.org/10.1038/srep29568
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author Wang, Weitao
Zhang, Peizhen
Zheng, Wenjun
Zheng, Dewen
Liu, Caicai
Xu, Hongyan
Zhang, Huiping
Yu, Jingxing
Pang, Jianzhang
author_facet Wang, Weitao
Zhang, Peizhen
Zheng, Wenjun
Zheng, Dewen
Liu, Caicai
Xu, Hongyan
Zhang, Huiping
Yu, Jingxing
Pang, Jianzhang
author_sort Wang, Weitao
collection PubMed
description Significant climate shifts in the northeastern Tibetan Plateau have taken place during the Cenozoic, but the reasons behind them remain unclear. In order to unravel the mechanisms driving these climate changes, proxy data with accurate age constraint are needed. Here we present magnetostratigraphy, sediment color (redness a*, and lightness L*) and grain-size analysis from an early to middle Miocene (~20–15.3 Ma) sediment sequence preserved in the Yumen Basin on the northeastern Tibetan Plateau. In this basin, remarkable increase in lightness, decreases in redness and in ratio of hematite (Hm) to goethite (Gt) took place at ~16.5 Ma. We suggest that these changes result from shorter duration of weathering, climatic wetting, and cooling associated with rapid uplift of the Qilian Shan at the middle Miocene.
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spelling pubmed-49441772016-07-26 Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau Wang, Weitao Zhang, Peizhen Zheng, Wenjun Zheng, Dewen Liu, Caicai Xu, Hongyan Zhang, Huiping Yu, Jingxing Pang, Jianzhang Sci Rep Article Significant climate shifts in the northeastern Tibetan Plateau have taken place during the Cenozoic, but the reasons behind them remain unclear. In order to unravel the mechanisms driving these climate changes, proxy data with accurate age constraint are needed. Here we present magnetostratigraphy, sediment color (redness a*, and lightness L*) and grain-size analysis from an early to middle Miocene (~20–15.3 Ma) sediment sequence preserved in the Yumen Basin on the northeastern Tibetan Plateau. In this basin, remarkable increase in lightness, decreases in redness and in ratio of hematite (Hm) to goethite (Gt) took place at ~16.5 Ma. We suggest that these changes result from shorter duration of weathering, climatic wetting, and cooling associated with rapid uplift of the Qilian Shan at the middle Miocene. Nature Publishing Group 2016-07-14 /pmc/articles/PMC4944177/ /pubmed/27411593 http://dx.doi.org/10.1038/srep29568 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wang, Weitao
Zhang, Peizhen
Zheng, Wenjun
Zheng, Dewen
Liu, Caicai
Xu, Hongyan
Zhang, Huiping
Yu, Jingxing
Pang, Jianzhang
Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau
title Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau
title_full Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau
title_fullStr Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau
title_full_unstemmed Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau
title_short Uplift-driven sediment redness decrease at ~16.5 Ma in the Yumen Basin along the northeastern Tibetan Plateau
title_sort uplift-driven sediment redness decrease at ~16.5 ma in the yumen basin along the northeastern tibetan plateau
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4944177/
https://www.ncbi.nlm.nih.gov/pubmed/27411593
http://dx.doi.org/10.1038/srep29568
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