Volume 50, Issue 6 e70078
LETTER TO ESEX

Drill core Uranium and Neodymium isotopic constraints on the provenance of the Mu Us dune field, northern China

Maotong Li

Maotong Li

Key Laboratory of Western China's Environment Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China

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Guodong Zhang

Corresponding Author

Guodong Zhang

Key Laboratory of Western China's Environment Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China

Correspondence

Guodong Zhang, Key Laboratory of Western China's Environment Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.

Email: [email protected]

Junsheng Nie, School of Earth Sciences, Lanzhou University, Lanzhou 730000, China.

[email protected]

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Benhong Guo

Benhong Guo

School of Earth Sciences, Lanzhou University, Lanzhou, China

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Fei Peng

Fei Peng

School of Earth Sciences, Lanzhou University, Lanzhou, China

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Haopeng Geng

Haopeng Geng

Key Laboratory of Western China's Environment Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China

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Junsheng Nie

Corresponding Author

Junsheng Nie

School of Earth Sciences, Lanzhou University, Lanzhou, China

Correspondence

Guodong Zhang, Key Laboratory of Western China's Environment Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.

Email: [email protected]

Junsheng Nie, School of Earth Sciences, Lanzhou University, Lanzhou 730000, China.

[email protected]

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First published: 10 May 2025

Abstract

Recent studies suggest that sediments derived from the northeastern Tibetan Plateau are potential sources for the western Mu Us dune field in northern China. However, this hypothesis conflicts with the (234U/238U) activity ratios and Nd isotopic values of the modern western Mu Us dune field. Here, we measured the (234U/238U) activity ratios and Nd isotopic values of two late Quaternary drill core samples from the western Mu Us dune field. The results align with the ranges observed in the northeastern Tibetan Plateau-derived upper Yellow River samples, confirming that these sediments are a likely source for the western Mu Us dune field during periods unaffected by human activity. This finding underscores the role of aeolian-fluvial interactions in shaping the dryland landscape of northern China. We suspect that the modern Mu Us dune field samples may have been affected by factors like human activities so inferences of sedimentary provenance based solely on modern samples should be cautious.

DATA AVAILABILITY STATEMENT

Data are available in the Supporting information.

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