Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications
The middle Miocene climate optimum (MMCO, 14.3-163 Ma) was a warm climatic interval that may provide an analog for future climates in the context of ongoing global warming. In continental regions, however, reconstruction of the MMCO remains controversial due to the lack of robust proxies from contin...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Online Access: | http://ir.ieecas.cn/handle/361006/5512 https://doi.org/10.1016/j.palaeo.2016.12.008 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/5512 2023-06-11T04:12:52+02:00 Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications Zhao, Hui Sun, Youbin Qiang, Xiaoke 2017-02-15 http://ir.ieecas.cn/handle/361006/5512 https://doi.org/10.1016/j.palaeo.2016.12.008 英语 eng PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.ieecas.cn/handle/361006/5512 doi:10.1016/j.palaeo.2016.12.008 Middle Miocene Climate Optimum Red Clay Iron Oxides Paleoclimate Science & Technology Physical Sciences Life Sciences & Biomedicine TEMPERATURE-DEPENDENT SUSCEPTIBILITY MAGNETIC-SUSCEPTIBILITY TIBETAN PLATEAU ENVIRONMENTAL MAGNETISM CLIMATIC OPTIMUM HOLOCENE LOESS CENTRAL-EUROPE ASIAN MONSOON ICE-SHEET RECORD Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary Article 期刊论文 2017 ftchinacascieeca https://doi.org/10.1016/j.palaeo.2016.12.008 2023-05-08T13:22:53Z The middle Miocene climate optimum (MMCO, 14.3-163 Ma) was a warm climatic interval that may provide an analog for future climates in the context of ongoing global warming. In continental regions, however, reconstruction of the MMCO remains controversial due to the lack of robust proxies from continuous sedimentary sequences. In this study, we investigated the composition and relative abundance of pedogenic iron oxides in the Zhuanglang Red Clay deposits from the western Chinese Loess Plateau, using rock magnetic, color reflectance, and geochemical analyses. Our aim was to assess the climatic sensitivity of iron oxides in order to produce robust proxies for reconstructing regional temperature and moisture relationships during the MMCO. Our results indicate that the MMCO in the study region was characterized by high effective precipitation, relatively high temperature and strong pedogenesis, suggesting a strong East Asian summer monsoon (EASM). The strengthening of the EASM intensity during the MMCO is consistent with records of enhanced terrigenous chemical weathering in the South China Sea, and the occurrence of a relatively warm and humid climate on a global scale, implying the strong coupling between Asian monsoon evolution and global climate change during the middle Miocene. In addition, the magnetic susceptibility record of the Zhuanglang Red Clay demonstrates that eccentricity played the dominant role in controlling the EASM during the MMCO. (C) 2016 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Ice Sheet Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Palaeogeography, Palaeoclimatology, Palaeoecology 468 162 172 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Middle Miocene Climate Optimum Red Clay Iron Oxides Paleoclimate Science & Technology Physical Sciences Life Sciences & Biomedicine TEMPERATURE-DEPENDENT SUSCEPTIBILITY MAGNETIC-SUSCEPTIBILITY TIBETAN PLATEAU ENVIRONMENTAL MAGNETISM CLIMATIC OPTIMUM HOLOCENE LOESS CENTRAL-EUROPE ASIAN MONSOON ICE-SHEET RECORD Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Middle Miocene Climate Optimum Red Clay Iron Oxides Paleoclimate Science & Technology Physical Sciences Life Sciences & Biomedicine TEMPERATURE-DEPENDENT SUSCEPTIBILITY MAGNETIC-SUSCEPTIBILITY TIBETAN PLATEAU ENVIRONMENTAL MAGNETISM CLIMATIC OPTIMUM HOLOCENE LOESS CENTRAL-EUROPE ASIAN MONSOON ICE-SHEET RECORD Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary Zhao, Hui Sun, Youbin Qiang, Xiaoke Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications |
topic_facet |
Middle Miocene Climate Optimum Red Clay Iron Oxides Paleoclimate Science & Technology Physical Sciences Life Sciences & Biomedicine TEMPERATURE-DEPENDENT SUSCEPTIBILITY MAGNETIC-SUSCEPTIBILITY TIBETAN PLATEAU ENVIRONMENTAL MAGNETISM CLIMATIC OPTIMUM HOLOCENE LOESS CENTRAL-EUROPE ASIAN MONSOON ICE-SHEET RECORD Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
description |
The middle Miocene climate optimum (MMCO, 14.3-163 Ma) was a warm climatic interval that may provide an analog for future climates in the context of ongoing global warming. In continental regions, however, reconstruction of the MMCO remains controversial due to the lack of robust proxies from continuous sedimentary sequences. In this study, we investigated the composition and relative abundance of pedogenic iron oxides in the Zhuanglang Red Clay deposits from the western Chinese Loess Plateau, using rock magnetic, color reflectance, and geochemical analyses. Our aim was to assess the climatic sensitivity of iron oxides in order to produce robust proxies for reconstructing regional temperature and moisture relationships during the MMCO. Our results indicate that the MMCO in the study region was characterized by high effective precipitation, relatively high temperature and strong pedogenesis, suggesting a strong East Asian summer monsoon (EASM). The strengthening of the EASM intensity during the MMCO is consistent with records of enhanced terrigenous chemical weathering in the South China Sea, and the occurrence of a relatively warm and humid climate on a global scale, implying the strong coupling between Asian monsoon evolution and global climate change during the middle Miocene. In addition, the magnetic susceptibility record of the Zhuanglang Red Clay demonstrates that eccentricity played the dominant role in controlling the EASM during the MMCO. (C) 2016 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Zhao, Hui Sun, Youbin Qiang, Xiaoke |
author_facet |
Zhao, Hui Sun, Youbin Qiang, Xiaoke |
author_sort |
Zhao, Hui |
title |
Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications |
title_short |
Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications |
title_full |
Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications |
title_fullStr |
Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications |
title_full_unstemmed |
Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications |
title_sort |
iron oxide characteristics of mid-miocene red clay deposits on the western chinese loess plateau and their paleoclimatic implications |
publishDate |
2017 |
url |
http://ir.ieecas.cn/handle/361006/5512 https://doi.org/10.1016/j.palaeo.2016.12.008 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.ieecas.cn/handle/361006/5512 doi:10.1016/j.palaeo.2016.12.008 |
op_doi |
https://doi.org/10.1016/j.palaeo.2016.12.008 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
468 |
container_start_page |
162 |
op_container_end_page |
172 |
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1768389006365556736 |