Geochemistry of the Laptev and East Siberian seas sediments with emphasis on rare-earth elements: Application for sediment sources and paleoceanography

Sattarova, Valentina V.; Астахов, А. С.; Аксентов, К. И.; Shi, Xuefa; Hu, Limin; Liu, Yanguang; Polyakov, D. N.; Alatortsev, A. V.; Kolesnik, O. N.

doi:10.1016/j.csr.2022.104907

Cited by 11 publications

(3 citation statements)

References 62 publications

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“…Sediment samples from the northern South China Sea continental shelf reported concentrations of REE ranging from 32.97 µg/g to 349.07 µg/g, with an average concentration of 192.94 µg/g. These elevated concentrations of REE in the bottom sediments of Siberian seas in the Arctic were found to be mainly controlled by the characteristics of the original rocks [44]. Thus, deep-sea sediments because of their vast amounts of REE and a remarkably high proportion of HREE have attracted interest as a future REE resource.…”

Section: Ocean Bottom Sediments and Continental Shelf Sedimentsmentioning

confidence: 99%

Potential Future Alternative Resources for Rare Earth Elements: Opportunities and Challenges

Balaram¹

2023

Preprint

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Currently, there is increasing industrial demand for rare earth elements (REE) as these elements are now integral to the manufacture of many carbon-neutral technologies. The depleting REE ores and increasing mining costs are prompting to look for alternative sources for these valuable metals, particularly from waste streams. Although REE concentrations in most of the alternate resources are lower than current REE ores, some sources such as marine sediments, coal ash, and industrial wastes like red mud are looking promising with significant concentrations of REE in them. This review focuses on the alternative resources for REE such as ocean bottom sediments, continental shelf sediments, river sediments, stream sediments, lake sediments, phosphorites deposits, industrial waste products like red mud, and phosphogypsum, coal, coal fly ash, and related materials, waste rock sources from old and closed mines, acid mine drainage, and recycling of e-waste. Possible future Moon exploration and mining for REE and other valuable minerals are also discussed. It is evident that REE extractions from both primary and secondary ores alone are not adequate to meet the current demand, and sustainable REE recovery from the alternative resources described here is also necessary to meet the growing REE demand. An attempt is made to identify the potential of these alternative resources and sustainability challenges, benefits, and possible environmental hazards to meet the growing challenges in meeting the future REE requirements.

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Section: Ocean Bottom Sediments and Continental Shelf Sedimentsmentioning

confidence: 99%

Potential Future Alternative Resources for Rare Earth Elements: Opportunities and Challenges

Balaram¹

2023

Preprint

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“…Earlier studies of dissolved in seawater neodymium isotope and REEs have concluded that concentrations and REE distribution patterns in the Laptev Sea are controlled by riverine inputs from the Ob, Yenisei, Khatanga, and Lena Rivers and by advection of open ocean Arctic Atlantic Water [38]. According to Sattarova et al [39], REE distribution spectra in the sediments of the eastern Laptev Sea and particulate material of the Yana and Lena Rivers are almost identical, which also indicates a dominate role of river runoff in sediment transport.…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Elements in Sediments from the Laptev Sea Shelf: Insight into Sources and Distribution Factors

Ruban,

Dudarev,

Rudmin

et al. 2024

Quaternary

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The study of rare earth elements (REEs) in marine sediments is a powerful geochemical tool for determining depositional processes and sediment provenance, as well as for understanding paleoenvironmental changes. In this context, we present REE, some major and trace elements, grain size, and mineralogy data on surface and core sediments, which were collected in different areas of the eastern Laptev Sea Shelf (LSS; Arctic Ocean). The primary objective of this paper was to assess the principal controlling factors influencing REE concentration and their vertical to lateral distribution. The total REE content (ΣREE) ranged from 139 ppm to 239 ppm within the studied sediment samples, predominantly consisting of silt. The normalized REE distribution patterns, based on North American Shale Composite (NASC) standard, exhibited an enrichment in light REE (LREE) when compared to heavy REE (HREE), which is similar to that in Lena River suspended particulate matter. The primary sources of REEs in the eastern LSS were both the suspended particulate matter from the Lena River and sediments originating from the coastal ice complex. The spatial distribution of REEs was primarily contingent upon the distance from sediment sources and prevailing hydrological conditions and was generally characterized by a decrease in REE concentration seaward. There was a moderate positive correlation between ΣREE and mean grain size in the studied surface sediment. However, this relationship was specific only for surface samples and was not found in the sediment cores, indicating that sediment grain size does not play a significant role in the REE vertical distribution. The strong positive correlation between ΣREE and Al, K, Ti, V, Cr, Zr, Hf, and Th suggests that REEs are hosted by not only heavy but also clay minerals. The vertical fluctuations of LREE/HREE, Eu/Eu*, (La/Lu)N can point at variable dominance of one or another REE source for during sediment accumulation.

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“…However, our understanding of the REE environmental behaviour remains fragmented; most studies focus on major rivers and logistically accessible field sites leading to sporadic snapshots of environmental processes (Gaillardet et al, 2003;Bayon et al, 2015;Rousseau et al, 2015). Seasonal studies are also scarce, leading to missed opportunities to document major changes in the environmental landscape, such as monsoons (Li et al, 2019;Hathorne et al, 2020) or ice-covered winters (Dang et al, 2022c;Laukert et al, 2022;Sattarova et al, 2023). Furthermore, the sources and sinks of REEs are not fully constrained at the global scale (Rousseau et al, 2015;Crocket et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The seasonal variations in the interactions between rare earth elements and organic matter in tropical rivers

Dang,

Ha,

Némery

et al. 2023

Chemical Geology

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Geochemistry of the Laptev and East Siberian seas sediments with emphasis on rare-earth elements: Application for sediment sources and paleoceanography

Cited by 11 publications

References 62 publications

Potential Future Alternative Resources for Rare Earth Elements: Opportunities and Challenges

Potential Future Alternative Resources for Rare Earth Elements: Opportunities and Challenges

Rare Earth Elements in Sediments from the Laptev Sea Shelf: Insight into Sources and Distribution Factors

The seasonal variations in the interactions between rare earth elements and organic matter in tropical rivers

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