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Sr, Nd, and Pb isotope provenance of surface sediments on the East Siberian Arctic Shelf and implications for transport pathways by Qiuling Li; Shuqing Qiao; Xuefa Shi; Yufei Chen; Anatolii Astakhov; Hui Zhang; Limin Hu; Gang Yang; Alexander Bosin; Yuri Vasilenko; Linsen Dong is a Earth and Planetary Sciences article available to read on EtoBox.
What is Sr, Nd, and Pb isotope provenance of surface sediments on the East Siberian Arctic Shelf and implications for transport pathways about?
The East Siberian Arctic Shelf (ESAS) is a crucial area for sea ice formation and exportation in the Arctic Ocean. Precise sedimentary identification in the ESAS is vital to trace sea ice transport. However, tracking sea ice transport is challenging due to the complexity of the sediment sources and transport processes in the ESAS. In this study, we investigated Sr, Nd, and Pb isotopes in residual fractions of recent surface sediments in the ESAS to explore the distribution, sources, and transport pathways of terrigenous materials and track regional sea ice transport. Our results show that approximately 20–30% of the Western Laptev Sea (WLS) sediments were derived from Siberian flood basalt, characterized by a high εNd (ca. -9.0) and a high 87Sr/86Sr ratio (ca. 0.715). Furthermore, most sediments of the Eastern Laptev Sea–Western East Siberian Sea (ELS–WESS) were derived from ancient clastic and metamorphic rocks, with the lowest εNd values (ca. -12.3), highest 87Sr/86Sr ratios (ca. 0.717), and highest 207Pb/206Pb ratios (ca. 0.836). Additionally, sediments in the Eastern East Siberian Sea–Western Chukchi Sea (EESS–WCS) had the highest εNd values (ca. -7.6), lowest 87Sr/86Sr ratios
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- Author
- Qiuling Li; Shuqing Qiao; Xuefa Shi; Yufei Chen; Anatolii Astakhov; Hui Zhang; Limin Hu; Gang Yang; Alexander Bosin; Yuri Vasilenko; Linsen Dong
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)