Loess Plateau storage of Northeastern Tibetan Plateau-derived Yellow River sediment.
Junsheng Nie,Thomas Stevens,Martin Rittner,Daniel F. Stockli,Eduardo Garzanti,Mara Limonta,Anna Bird,Sergio Andò,Pieter Vermeesch,Joel E. Saylor,Huayu Lu,Daniel O. Breecker,Xiaofei Hu,Shanpin Liu,Alberto Resentini,Giovanni Vezzoli,Wenbin Peng,Andrew Carter,Shunchuan Ji,Baotian Pan +19 more
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TLDR
This finding revises the understanding of the origin of the Chinese Loess Plateau and provides a potential solution for mismatches between late Cenozoic terrestrial sedimentation and marine geochemistry records, as well as between global CO2 and erosion records.Abstract:
Marine accumulations of terrigenous sediment are widely assumed to accurately record climatic- and tectonic-controlled mountain denudation and play an important role in understanding late Cenozoic mountain uplift and global cooling. Underpinning this is the assumption that the majority of sediment eroded from hinterland orogenic belts is transported to and ultimately stored in marine basins with little lag between erosion and deposition. Here we use a detailed and multi-technique sedimentary provenance dataset from the Yellow River to show that substantial amounts of sediment eroded from Northeast Tibet and carried by the river’s upper reach are stored in the Chinese Loess Plateau and the western Mu Us desert. This finding revises our understanding of the origin of the Chinese Loess Plateau and provides a potential solution for mismatches between late Cenozoic terrestrial sedimentation and marine geochemistry records, as well as between global CO2 and erosion records.read more
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Palaeoclimatic records of the loess/palaeosol sequences of the Chinese Loess Plateau
TL;DR: The magnetic properties of the windblown loess units and interbedded palaeosols of the famous Chinese Loess Plateau provide key palaeo-precipitation data for this populous, monsoon-dominated region as discussed by the authors.
Journal ArticleDOI
Loess genesis and worldwide distribution
TL;DR: In this article, a large body of information on loess source areas and transportation pathways and the existence of desert transition zones was integrated. And three modes of loess genesis, namely continental glacier provenance-river transport, mountain provenance river transport, and mountain-provenance-riven transport-desert transition, were identified.
Journal ArticleDOI
Rapid incision of the Mekong River in the middle Miocene linked to monsoonal precipitation
Junsheng Nie,Gregory Ruetenik,Kerry Gallagher,Gregory D. Hoke,Carmala N. Garzione,Weitao Wang,Daniel F. Stockli,Xiaofei Hu,Zhao Wang,Ying Wang,Thomas Stevens,Martin Danišík,Shanpin Liu +12 more
TL;DR: In this article, low-temperature thermochronology data from river bedrock samples reveal a phase of rapid downward incision (>700m) of the Mekong River during the middle Miocene about 17 million years ago, long after the uplift of the central and southeastern Tibetan Plateau.
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Eolian cannibalism: Reworked loess and fluvial sediment as the main sources of the Chinese Loess Plateau
Alexis Licht,Alexis Licht,Alexis Licht,Alex Pullen,Alex Pullen,Paul Kapp,J. Abell,N. Giesler +7 more
TL;DR: In this article, Wang et al. presented a new U-Pb ages of detrital zircons from wind-eroded strata, Quaternary eolian deposits, and modern river sands in central China in order to increase the robustness and the spatial resolution of zircon age distributions in dust source regions.
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Growth of the Qaidam Basin during Cenozoic exhumation in the northern Tibetan Plateau: Inferences from depositional patterns and multiproxy detrital provenance signatures
TL;DR: In this article, the Qaidam Basin in the northern Tibetan Plateau has been studied and provenance results from sandstone petrology, U-Pb geochronology, and heavy mineral analyses indicate initial late Paleocene-early Eocene derivation from lower Paleozoic and Mesozoic igneous and metamorphic rocks of the central to northern Qilian Shan-Nan Shan basin.
References
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Onset of Asian desertification by 22 Myr ago inferred from loess deposits in China
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TL;DR: This new evidence indicates that large source areas of aeolian dust and energetic winter monsoon winds to transport the material must have existed in the interior of Asia by the early Miocene epoch, at least 14 million years earlier than previously thought.