U-Pb ages of detrital zircon and provenances of Red Clay in the Chinese Loess Plateau

Gong, Hang; Xie, Wenbin; Zhang, Rui; Zhang, Yunxiang

doi:10.1016/j.jseaes.2017.02.014

Cited by 10 publications

(10 citation statements)

References 39 publications

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“…Although sediments from the Tarim Basin (Nie et al, ; Rittner et al, ) may also have contributed zircon grains of 350‐ to 200‐Ma age, it is difficult for grains coarser than 25 μm to be transported over such long distances by near‐surface winds. Alternatively, it is suggested that the Yellow River may have contributed to the uppermost Red Clay deposits (Gong et al, ; Nie et al, ). However, the sediments of the modern Yellow River can be considered as a mixture of blocks/belts in the NE Tibetan Plateau (Nie et al, ), and they do not match most of the Red Clay samples here.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, measurement of detrital zircon age distributions, which provide a range of U‐Pb ages from hundreds of zircon grains, is an effective technique for discriminating multiple eolian sources based on the age signatures of igneous or high‐grade metamorphic events in the provenance areas. A large database of detrital zircon ages has been established for Quaternary loess, Pliocene and Miocene Red Clay, and the source regions in central and eastern Asia (Bird et al, ; Che & Li, ; Gong et al, ; Licht et al, ; Nie et al, , , ; Pullen et al, ; Rittner et al, ; Shang et al, ; Stevens et al, , ; Sun et al, ; Xiao et al, ; Xie et al, ; Zhang et al, ), and from this it is clear that the eolian deposits of the CLP exhibit spatial and temporal variations in source. However, it remains unclear whether the sources of the CLP changed on tectonic timescales since the onset of eolian silt sedimentation, and thus, it is difficult to conclusively link provenance changes of the eolian deposits with climatic or tectonic variations.…”

Section: Introductionmentioning

confidence: 99%

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Expansion of Dust Provenance and Aridification of Asia Since ~7.2 Ma Revealed by Detrital Zircon U‐Pb Dating

Zhang

Stevens

et al. 2018

Geophysical Research Letters

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The relative importance of global cooling and Tibetan Plateau uplift in driving the aridification of Asia during the late Cenozoic is debated, largely due to the lack of appropriate proxy indicators. Here we address this problem by investigating changes in the source of Chinese loess and Red Clay, which is directly controlled by changes in the extent and distribution of the arid zone of Asia and the intensity of the East Asian winter monsoon, using zircon U‐Pb dating of 27 levels in a near‐continuous eolian sedimentary sequence in southern Chinese Loess Plateau. The results show that source regions expanded stepwise at ~7.2, ~2.6, 1.2–0.9 Ma, and at the Last Glacial Maximum. These changes were synchronous with global cooling and ice cover expansion in the Northern Hemisphere, suggesting that the drivers of aridification of the Asian interior were intimately related to global cooling in the late Cenozoic.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Expansion of Dust Provenance and Aridification of Asia Since ~7.2 Ma Revealed by Detrital Zircon U‐Pb Dating

Zhang

Stevens

et al. 2018

Geophysical Research Letters

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“…A key challenge is to extend these comprehensive analyses to Pliocene red clay deposits that underlie the loess. Although some red clay zircon U-Pb studies have been published (Nie et al, 2014; Shang et al, 2016; Gong et al, 2017), the necessary preparation and analysis of smaller zircon grains in the red clays make this work difficult. A further challenge is that the large sample numbers in recent studies require improved analysis and visualization of the resultant data sets.…”

Section: Methodological Approaches To the Study Of Loessmentioning

confidence: 99%

Approaches and challenges to the study of loess—Introduction to the LoessFest Special Issue

et al. 2018

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In September 2016, the annual meeting of the International Union for Quaternary Research’s Loess and Pedostratigraphy Focus Group, traditionally referred to as a LoessFest, met in Eau Claire, Wisconsin, USA. The 2016 LoessFest focused on “thin” loess deposits and loess transportation surfaces. This LoessFest included 75 registered participants from 10 countries. Almost half of the participants were from outside the United States, and 18 of the participants were students. This review is the introduction to the special issue forQuaternary Researchthat originated from presentations and discussions at the 2016 LoessFest. This introduction highlights current understanding and ongoing work on loess in various regions of the world and provides brief summaries of some of the current approaches/strategies used to study loess deposits.

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“…Published zircon U-Pb ages from Baode, Jingbian, Huanxian, Lingtai, Xifeng, Weinan, Caoxian, Xining, Ledu, Dongwan, and Shilou (15,19,20,24,(26)(27)(28)(29)(30)(31)34) were compiled. The details about sample locations, lithology, and references are shown in Fig.…”

Section: Compilation Of Published Zircon U-pb Ages and Sr-nd-hf Isoto...mentioning

confidence: 99%

Large-number detrital zircon U-Pb ages reveal global cooling caused the formation of the Chinese Loess Plateau during Late Miocene

Zhang

et al. 2022

Sci. Adv.

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The formation and evolution of the landscape of the Chinese Loess Plateau (CLP) is debated because of uncertainties regarding dust provenance. We present a quantitative estimation of dust source contributions to the CLP, based on more than 37,100 detrital zircon U-Pb ages, combined with mineral assemblages and isotope analyses. Our results reveal that the CLP was stepwise formed by ~8 million years (Ma) and is mainly composed of material from the Northeastern Qinghai-Tibetan Plateau, with stepwise shifts in relative contributions of different eolian silt sources occurring at ~2.6 Ma and 1.5 to 1.2 Ma. We infer that these changes were driven by stepwise global cooling, which induced aridification and enhanced silt production in glaciated-cold climate dust source regions, as well as dust ablation in the expanded arid regions. We propose that global cooling, rather than regional tectonic deformation, was the main driver of the formation and evolution of the CLP during late Cenozoic.

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U-Pb ages of detrital zircon and provenances of Red Clay in the Chinese Loess Plateau

Cited by 10 publications

References 39 publications

Expansion of Dust Provenance and Aridification of Asia Since ~7.2 Ma Revealed by Detrital Zircon U‐Pb Dating

Expansion of Dust Provenance and Aridification of Asia Since ~7.2 Ma Revealed by Detrital Zircon U‐Pb Dating

Approaches and challenges to the study of loess—Introduction to the LoessFest Special Issue

Large-number detrital zircon U-Pb ages reveal global cooling caused the formation of the Chinese Loess Plateau during Late Miocene

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