REE partitioning in riverine sediments around the Yellow Sea and its importance in shelf sediment provenance

Lim, Dhongil; Jung, Hoi Soo; Choi, Jin Yong

doi:10.1016/j.margeo.2014.07.002

Cited by 46 publications

(40 citation statements)

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“…In this study, the leachates are expected to contain REE in clay adsorbed parts, amorphous Mn‐Fe (hydro)oxides, carbonate and phosphate minerals [ Song and Choi , ]. The residues contained mainly resistant silicates and aluminosilicate minerals that were insoluble in HCl, along with some REE‐bearing heavy minerals [ Lim et al ., ]. The average total REE (∑REE) concentrations in the leachates and residues are 29.8 ± 23.5 μg/g and 103 ± 57.3 μg/g, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…These observations differ from other world river‐borne sediments with respect to REE fractionation [ Goldstein and Jacobsen , ]. Stronger REE fractionations are more evident in the Amazon and Mississippi river sediments than in those East China rivers (the Huanghe, Changjiang, Jiaojiang, Oujiang, and Mulanxi rivers); the former displays more HREE‐depleted patterns, with bulk UCC‐normalized (La/Yb) N ratios of 2.7 and 1.6, respectively [ Goldstein and Jacobsen , ]; the latter shows poor or no HREE‐depleted patterns, with (La/Yb) N ratios close to 1 [ Yang et al ., ; Lim et al ., ].…”

Section: Resultsmentioning

confidence: 99%

“…The rare earth elements (REE) are a coherent group of elements that have been used extensively to trace low-temperature geological and biogeochemical processes in a range of rocks, soils, sediments, and aquatic environments, e.g., continental crust evolution [Taylor and McLennan, 1981;Taylor et al, 1986], paleoclimatic environment [Tanaka et al, 2007;Yang et al, 2014], sediment provenance [McLennan, 1989;Hoskin and Ireland, 2000;Yang et al, 2002;Dou et al, 2010;Jung et al, 2012Jung et al, , 2016Li et al, 2013;Lim et al, 2014], weathering/erosion processes [Nesbitt, 1979;Duddy, 1980;Aubert et al, 2001;Singh and Rajamani, 2001;Ma et al, 2007Ma et al, , 2011Yusoff et al, 2013], and solid-water interactions in natural environments [Johannesson and Lyons, 1994;Hannigan and Sholkovitz, 2001;Stille et al, 2009;Leybourne and Johannesson, 2008;Tang and Johannesson, 2010]. All these studies are commonly based on the unique character and the REE composition (stable and active signals) variations during earth surface processes.…”

Section: Introductionmentioning

confidence: 99%

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Revisit of rare earth element fractionation during chemical weathering and river sediment transport

Yang

Guo

et al. 2017

Geochem Geophys Geosyst

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Although rare earth element (REE) has been widely applied for provenance study and paleoenvironmental reconstruction, its mobility and fractionation during earth surface processes from weathering to sediment deposition remain more clarification. We investigated the REE fractionations during chemical weathering and river sediment transport based on the systematic observations from a granodiorite‐weathering profile and Mulanxi River sediments in southeast China. Two chemical phases (leachates and residues) were separated by 1 N HCl leaching and the leachates account for 20–70% of the bulk REE concentration. REEs in the weathering profile have been mobilized and fractionated to different extents during chemical weathering and pedogenesis. Remarkable cerium anomalies (Ce/Ce* = 0.1–10.6) occur during weathering as a result of coprecipitation with Mn (hydro)oxides in the profile, while poor or no Ce anomalies in the river sediments were observed. This contrasting feature sheds new light on the indication of Ce anomaly for redox change. The hydraulic sorting‐induced mineral redistribution can further homogenize the weathering and pedogenic alterations and thus weaken the REE fractionations in river sediments. The mineral assemblage is the ultimate control on REE composition, and the Mn‐Fe (hydro)oxides and secondary phosphate minerals are the main hosts of acid‐leachable REEs while the clay minerals could be important reservoirs for residual REEs. We thus suggest that the widely used REE proxies such as (LREE/HREE)UCC ratio in the residues is reliable for the indication of sediment provenance, while the ratio in the leachates can indicate the total weathering process to some extent.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Revisit of rare earth element fractionation during chemical weathering and river sediment transport

Yang

Guo

et al. 2017

Geochem Geophys Geosyst

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“…이런 복잡한 황해 해류순환 시스템과 많은 양의 퇴적물 유입은 황해 대륙붕에 연안으로부터 고립된 패치 형태의 니질대(muddy patch)가 형성되는 지형 특성을 보인다 (Milliman et al, 1986;Lee and Chough, 1989;Park and Khim, 1992;Cho et al, 1999). 하 지만, 니질 퇴적물 이동에 따른 수리역학적인 자료와 이해가 부족 한 관계로, 황해 세립 퇴적물에 대한 연구는 주로 지질·지화학 분 석 방법을 이용한 기원연구 중심으로 진행되어 왔다 (Alexander et al, 1991;정회수 외, 2006;임동일 외, 2007;Lim et al, 2014). 퇴적물 기원지연구의 여러 분석 방법들 중에 가장 많이 사용되는 방법중 하나가 점토광물의 상대적 함량분석 이다.…”

Section: 주도를 우회하여 수심이 가장 깊은 황해 해곡(Yellow Sea Through)을 통하여 황해로 유입되는 주unclassified

Distribution of Clay Minerals in Surface Sediments of Kunsan Basin, Yellow Sea and their Transport Pathway

Rho¹

2015

The Sea

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To understand the transport pathways of muddy sediment of the Kunsan basin in Yellow Sea, grain sizes and clay mineral of 32 surface sediments and a sediment core were analyzed. In the study area, illite is predominant (63.4~71.9%), followed by chlorite (15.1~20.2%), kaolinite (10.3~17.2%) and smectite (2~6.9%), According to the spatial distribution of the clay minerals, illite, kaolinite+chlorite and smectite show relatively higher contents in the center of the north, northeast, and the south of the study area, respectively. Considering the spatial distribution of clay mineral contents the sand ridge alignments and tidal current pathways, the smectite particles were probably derived from the south of the study area, but kaolinite and/or chlorite particles were mainly transported from the Korean coastal zone. Meanwhile, down-core variation in the contents of clay minerals of the core revealed a distinct change in fine-grained muddy sediment provenance: muddy sediment input from the Korean coastal areas has increased while the input from China has decreased since the last 5,000 year ago, by showing the amount decrease of smectite and the increase of kaolinite+chlorite at the top layer of the late Holocene muddy sediment unit of the core.

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“…Marine environmental pollution in the Yellow Sea and East China Sea (YSECS) has made aspects of the sedimentary environment particularly topical in the region, as sediments can carry toxic substances, influence water quality and lower underwater intensity of illumination (e.g., Gao et al 2014;Hu et al 2014;Lim et al 2014;Xing et al 2014;Zhou et al 2014). Suspended sediment concentration (SSC) distributions in the YSECS have been well studied based on field data (Dong et al 2011;Yuan et al 2008a;Bian et al 2013a).…”

Section: Introductionmentioning

confidence: 99%

ADV-based estimates of sediment settling velocity on the shelf of the Yellow and East China seas: evidence of marked seasonal and intra-tidal variations

et al. 2014

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Sediment settling velocity (w s ) patterns are well established at the Huanghe and Changjiang river mouths, but no w s results have been reported for the Yellow Sea and the East China Sea (YSECS) shelves due to the laborintensive and time-consuming aspect of traditional w s measurement approaches (e.g., settling column method). This disadvantage can be overcome by the acoustic Doppler velocimeter (ADV). In this study, ten ADV-based field campaigns were conducted over various seasons of the years 2011 and 2013 at six YSECS sites, five on the East China Sea shelf (28 to 87 m depth) and one on the Yellow Sea shelf (74 m depth). The results demonstrate that ADV backscatter was a reliable proxy of suspended sediment concentration over a measurement range of 1 to 1,000 mg/L. The ADV-estimated w s was highest (1.43-1.88 mm/s) in summer in the southern East China Sea, and lowest (0.07 mm/s) in spring in the northern Yellow Sea. This can plausibly be explained by the hydrodynamic environment and bottom sediment type at the campaign sites. More importantly, the data reveal evidence of marked seasonal variations of w s in the middle sector of the East China Sea, as well as intra-tidal variations at all campaign sites. However, these variations of w s are not directly regulated by current velocity or suspended sediment concentration. This aspect represents a major challenge in future research in this shelf region and, for that matter, in similar settings worldwide. Evidently, expanding on the well-resolved continuous time series provided by the ADV approach is a key step in this direction.

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REE partitioning in riverine sediments around the Yellow Sea and its importance in shelf sediment provenance

Cited by 46 publications

References 40 publications

Revisit of rare earth element fractionation during chemical weathering and river sediment transport

Revisit of rare earth element fractionation during chemical weathering and river sediment transport

Distribution of Clay Minerals in Surface Sediments of Kunsan Basin, Yellow Sea and their Transport Pathway

ADV-based estimates of sediment settling velocity on the shelf of the Yellow and East China seas: evidence of marked seasonal and intra-tidal variations

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