Behaviour of REEs in a tropical estuary and adjacent continental shelf of southwest coast of India: Evidence from anomalies

Deepulal, P M; Kumar, T. R. Gireesh; Sujatha, C. H.

doi:10.1007/s12040-012-0223-5

Cited by 24 publications

(6 citation statements)

References 41 publications

(49 reference statements)

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“…The REY levels in sediments of the Telašćica Bay were found to be comparable to literature data for the sediments from the Bijagós archipelago, Guinea-Bissau [32], the sediments from the port of Rijeka in the northern part of the eastern Adriatic [33], and the sediments of the Gulf of Biscay in France [34] (Table 3). They were also comparable to the lower range of values reported for the sediments of the Chesapeake Bay [13] and the estuarine sediments in Cochin in India [35] (Table 3). Measured concentrations exhibited lower values than the literature data for estuarine sediments of the river Odiel in Spain [14] (Table 3).…”

Section: Rey Distribution In Soils and Sedimentssupporting

confidence: 88%

Distribution of Rare Earth Elements in Sediments of the Marine Lake Mir (Dugi Otok, Croatia)

2018

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The Lake Mir represents a small, isolated, and shallow marine lake situated in the south-eastern part of the Dugi otok Island, in a karstic landscape of the eastern Adriatic coast. The surrounding karstic background, with occasional occurrences of red soil, characterizes the sediments in the lake as coarse grained and carbonate rich. Previous studies suggested the prevailing influence of the lake bathymetry, that is, the proportion of carbonates and grain size characteristics of the sediments, on the variability of the element composition of the lake sediments. To confirm previous assumptions and obtain a better understanding of the factors influencing sediment composition of this marine lake, the distribution of rare earth elements in sediments of the Lake Mir and the nearby Telašćica Bay, as well as surrounding soils, was investigated. In the lake sediments, the sum of rare earth elements, including Y (hereinafter referred as ΣREY), ranged from 10.6 mg kg−1 to 25.3 mg kg−1; in the Telašćica Bay sediments, ΣREY were higher compared to the lake and ranged from 56.4 mg kg−1 to 85.2 mg kg−1, while the highest ΣREY, from 83.3 mg kg−1 to 227 mg kg−1, were observed in soils surrounding the lake. Despite the difference in the levels of the rare earth elements, the REY normalized patterns and associated fractionation parameters (ΣLREE/ΣHREE, (La/Yb)N, and (Nd/Yb)N) showed similarities between the lake sediments and the surrounding soils, confirming a significant influence of local lithology on the lake composition. The results of the statistical analysis, on the other hand, suggest the contribution of both the carbonate (e.g., calcite) and non-carbonate minerals (i.e., alumosilicates and Al–Fe-hydroxides) on the total REY content in the lake sediments.

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Section: Rey Distribution In Soils and Sedimentssupporting

confidence: 88%

Distribution of Rare Earth Elements in Sediments of the Marine Lake Mir (Dugi Otok, Croatia)

2018

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“…These multi valence elements such as V, U, Ni, Cr, and Mo, their mobilization, precipitation, and concentration are mainly controlled by redox conditions and are enriched in anoxic sediments (Dypvik, 1984;Yarincik et al, 2000;Yang et al, 2004;Guo et al, 2007). Also, the ratios of these elements (U/Th, V/Cr, Ni/Co, and V/Sc) have been used to estimate the paleoredox conditions (Hatch and Leventhal, 1992;Jones and Manning, 1994;Pattan et al, 2005;Deepulal et al, 2012;Akinyemi et al 2013;Armstrong-Altrin et al 2015;Tobia and Shangola, 2016;Ramos-Vazquez et al, 2017;Anaya-Gregorio et al, 2018). The combined use of trace elements and their ratios may allow distinguishing the various depositional environments (oxic, suboxic, and anoxic).…”

Section: Geochemical Parameters Indicative Of Redox Conditionsmentioning

confidence: 99%

“…Authigenic U was intended from the formula= Utotal -(Th/3). The sediments of high authigenic U contents incline to be formed under anoxic conditions which allow great amounts of organic matter to accumulate and fixed (Wignall and Myers, 1988;Deepulal et al, 2012). Jones and Manning (1994) suggest less than 5ppm of authigenic U to be indicative of oxic conditions.…”

Section: Geochemical Parameters Indicative Of Redox Conditionsmentioning

confidence: 99%

“…The Ni/Co ratios are a powerful tool for paleoredox conditions (Dypvik, 1984;Dill, 1986;Jones and Manning, 1994;Nagarajan et al, 2007a;Deepulal et al, 2012). The values of Ni/Co ratios less than 5 suggest oxic environments, whereas the values more than 5 indicate suboxic and anoxic environment of deposition (Jones and Manning, 1994).…”

Section: Suboxic and Anoxic Oxicmentioning

confidence: 99%

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Geochemical Application in Unraveling Paleoweathering, Provenance and Environmental Setting of the Shale From Chia Gara Formation, Kurdistan Region, Iraq

Mustafa

Tobia

2020

IGJ

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The geochemical characteristics of the shale of the Chia Gara Formation (Middle Tithonian- Berriasian) from the Imbricated Zone (Barsarin section) and High Folded Zone (Banik section) Kurdistan Region, Iraq, was carried out to constrain their paleoweathering, provenance, and depositional environment. There are no clear differences in the major and trace elements of the Chia Gara Formation between the two studied sections. The chemical index of alteration (CIA) is significantly higher in the Barsarin than the Banik shales, suggesting more intense weathering of the Barsarin than the Banik shales. The samples of the Banik and some of Barsarin are clustered near the A-K line in A-CN-K plot suggests intense chemical weathering (high CIA) without any clear-cut evidence of K-metasomatism. The other samples of Barsarin have a weathering trend parallel to the A-CN line, indicating relativelysteady state weathering conditions. The geochemical parameters of the shale (Al2O3/TiO2,

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“…It also helps to reduce the least significant variables in the dataset to simplify the data structure in the PCA [16]. Varimax rotation is only applied to the PCs with eigenvalues equal to or more than 1, which considered significant to obtain the new variables called as varimax factors (VFs) or factor loadings [12].…”

Section: Factor Analysis (Fa)mentioning

confidence: 99%

Assessment on air quality pattern: a case study in Putrajaya, Malaysia

Kamaruzzaman¹,

Saudi²,

Azid³

et al. 2018

J. Fundam and Appl Sci.

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Nowadays, air quality problem has become a major issue in Mal This study aims to determine the pa pollutant, relationship between air pollutants and API Data from Putrajaya monitoring used. Multivariate techniques such as principal component analysis (PCA), factor analysis (FA) and statistical process control (SPC).parameters with the value >0.75 affected the quality of air influence the quality of air the most compared stipulated that the chemometric technique can provide meaningful variability of large and complex air quality data.

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Behaviour of REEs in a tropical estuary and adjacent continental shelf of southwest coast of India: Evidence from anomalies

Cited by 24 publications

References 41 publications

Distribution of Rare Earth Elements in Sediments of the Marine Lake Mir (Dugi Otok, Croatia)

Distribution of Rare Earth Elements in Sediments of the Marine Lake Mir (Dugi Otok, Croatia)

Geochemical Application in Unraveling Paleoweathering, Provenance and Environmental Setting of the Shale From Chia Gara Formation, Kurdistan Region, Iraq

Assessment on air quality pattern: a case study in Putrajaya, Malaysia

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