Influence of metaluminous granite mineralogy on the rare earth element geochemistry of rocks and soils along a climosequence in Brazil

Silva, Ygor Jacques Agra Bezerra da; Nascimento, Clístenes Williams Araújo do; Biondi, Caroline Miranda; Straaten, Peter van; Júnior, Valdomiro Severino de Souza; Silva, Yuri Jacques Agra Bezerra da; Santos, Carlos Alberto dos; Araújo, Josângela do Carmo Trezena de

doi:10.1016/j.geoderma.2017.06.031

Cited by 33 publications

(23 citation statements)

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“…These findings demonstrate that, regardless of climatic conditions, the parent material factor highly influences REE geochemistry in soils. Several authors have observed that large variations in REE contents in soils are highly dependent on the types of parent material they are derived from (Hu et al, 2006b;Silva et al, 2017;Alfaro et al, 2018). Soils developed from different parent materials that formed under the same climatic condition (sub-humid zone) exhibited different geochemical signatures of LREE and HREE in soils (Figures 3a and 3b).…”

Section: Natural Content and Reference Values Of Rees In Rn Soilsmentioning

confidence: 99%

“…Standardization was the first step in determining whether depletion or enrichment occurred relative to reference material. It also facilitated comparison of the REE content results with soils from other locations; normalization with the upper continental crust is common (Paye et al, 2016;Censi et al, 2017;Silva et al, 2017). …”

Section: Determination Of Major Elements and Calculation Of Ciamentioning

confidence: 99%

“…The HREEs form more stable complexes with soil organic matter, facilitating their mobilization in soil (Henderson, 1984;Sonke, 2006); however, this effect was not observed in our data. Silva et al (2017) studied the influence of the mineralogy of type I and S granites on the geochemistry of REEs in rocks and soils along a climosequence in Brazil. They saw no relationship between organic carbon content and REEs in soils.…”

Section: Natural Content and Reference Values Of Rees In Rn Soilsmentioning

confidence: 99%

“…They are mainly found in Fe and Al phosphates, carbonates, silicates, and oxides. Parent material and climate directly influence soil REE geochemistry (Zhang et al, 2001;Cidu et al, 2013;Silva et al, 2017). The intensity of weathering controls the transformation of minerals that act as sources of REEs in soils and several other environmental compartments.…”

Section: Introductionmentioning

confidence: 99%

“…Knowledge of the natural levels of REEs in soils is the first step in monitoring potentially contaminated areas. In addition, determination of these values deserves special attention because of the wide utility of these elements as tracers of soil erosion (Zhu et al, 2011;Wen et al, 2014), pedogenetic processes (Berger et al, 2014;Silva et al, 2017), and geochemical cycles (Viers et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

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Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast

Silva

Barbosa

Nascimento

et al. 2018

Rev. Bras. Ciênc. Solo

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Growth in the agricultural and industrial sectors has increased the demand for rare earth elements (REEs) in the production of technological devices and fertilizers. Thus, the accumulation of these elements in the soil has become an environmental concern. Here, we aim to determine the natural contents of REEs in soils derived from different parent materials and under climatic conditions ranging from humid to semi-arid. We then evaluate the influence of major elements and soil properties on the geochemistry of REEs. The contents of REEs were determined using inductively coupled plasma optical emission spectroscopy. Major elements were determined by X-ray fluorescence spectrometry. The mean content of REEs in soils from Rio Grande do Norte (RN), Brazil, were in the followed order (mg kg -1 ): Ce (40.4) > La (18.9) > Nd (15.8) > Pr (7.3) > Sm (3.0) > Gd (2.6) > Dy (1.0) > Er (0.7) > Yb (0.6) > Eu (0.5) = Tb (0.5) > Ho (0.3) > Lu (0.2). The parent material was the main factor that governed the geochemistry of the REEs in soils of RN. Higher levels of REEs were observed in soils derived from igneous and metamorphic rocks. In contrast, sedimentary rocks -except for the region formed from limestone -generated soils with lower contents of REEs in the state. In addition, soils developed from the same parent material and under different climatic conditions showed the same geochemical signatures for REEs in soils. These results confirm the small effect of climate on REE geochemistry in soils of RN and lead to the conclusion that the geochemical signature of REEs in these soils reflects the composition of the underlying parent material. The lack of significant correlation between (La/Yb) N ratio and the Chemical Alteration Index also confirms the low influence of climate on soil REE geochemistry. Among the major elements, Fe and Si had a greater influence on soil REE geochemistry. Higher REEs were seen in areas with more Fe and less Si. These REE levels were clearly controlled by the type of parent material. The Nd, Sm, Tb, Dy, Ho, Yb, and Er levels showed strong spatial dependence; this dependence was moderate for the Pr, La, Ce, Eu, Gd, and Lu levels. Spatial variability maps of REEs are particularly important to identify areas under environmental impact. Our results represent the most detailed study of the surface geochemistry of REEs in Brazilian soils and contribute to the scarce data available on these elements in Brazil.

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Section: Natural Content and Reference Values Of Rees In Rn Soilsmentioning

confidence: 99%

Section: Determination Of Major Elements and Calculation Of Ciamentioning

confidence: 99%

Section: Natural Content and Reference Values Of Rees In Rn Soilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast

Silva

Barbosa

Nascimento

et al. 2018

Rev. Bras. Ciênc. Solo

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Raw material choices and material characterization of the 3^rd and 2^nd millennium BC pottery from the Petit‐Chasseur necropolis: Insights into the megalith‐erecting society of the Upper Rhône Valley, Switzerland

et al. 2021

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Owing to its well‐preserved and long‐lasting archaeological record, the necropolis of Petit‐Chasseur in the Upper Rhône Valley (3100–1600 BC) showcases the economic, social, and ideological changes of 3rd and 2nd millennium BC Europe excellently. An in‐depth investigation of pottery artifacts was carried out using multiple spectroscopic and microscopic techniques. Nine types of ceramic fabrics were identified based on the variety of temper and natural inclusions; however, the mineralogy and phase chemistry of the ceramic matrix showed the paste to be primarily illitic or muscovitic, irrespective of the inclusion type. Muscovitic clays were likely procured from the fluvioglacial, glaciolacustrine, colluvial, and till sediment abundantly available at higher altitudes of the Upper Rhône Valley, whereas illitic clays were acquired from pedogenized loess horizons or the Rhône River alluvium. Different raw material choices and paste preparation practices suggest distinct ceramic traditions that likely existed in the valley during the 3rd and 2nd millennia BC. This, along with the hypothesized provenance of the raw material, is likely in favor of various prehistoric communities gathering at the megalithic necropolis from close and distant parts of the valley using the Petit‐Chasseur site as a place of assembly.

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Rare earth element geochemistry during weathering of S‐type granites from dry to humid climates of Brazil

Silva

Nascimento

Biondi

et al. 2018

J. Plant Nutr. Soil Sci.

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S‐type granites are igneous rock types that are widespread in all continental crust. These granites play a key role in global weathering patterns and can be important economic ores of rare earth elements (REEs). This study provides insights into the geochemical and mineralogical signatures of REEs in S‐type granites and their derived soil profiles along a climosequence from dry to humid climates of Brazil. Mineralogical, petrographic, geochemical and soil analyses (physical and chemical) were used to evaluate the geochemistry of REEs in rock and soil samples. The granites were characterized as strongly peraluminous, being classified as typical S‐types. Both the granites and their derived soils contained high contents of REEs, with monazite and apatite being the major source of REEs. The high enrichment of light REEs (LRREs) in monazite and apatite explained the REE fractionation evidenced in the S‐type granites. The normalized REE distribution patterns for soil profiles along the climosequence revealed the fractionation between light and heavy REEs (HREEs). The ratio of La/YbN > 1 also confirmed the LREEs/HREEs fractionation. The mineralogical composition of the parent material and the clay minerals (kaolintes) seemed to govern the fractionation between LREEs and HREEs in these soils. Chemical index of alteration (CIA) values, REE fractionation and kaolinite proportions in soil profiles increased from dry to humid climates. These results suggest that the degree of weathering plays an important role in the type and volume of secondary minerals, as well as the REE fractionation. Among the phyllosilicates, kaolinite seems to be the most important adsorbent of light REE. The higher positive Eu anomalies with advanced weathering are explained by the breakdown of plagioclase. The weathering of monazite and apatite was the main reason for the slight negative Ce anomalies in the soil profiles. This study can be used to comprehend the geochemistry of REEs in other parts of the tropics underlain by S‐type granites.

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Influence of metaluminous granite mineralogy on the rare earth element geochemistry of rocks and soils along a climosequence in Brazil

Cited by 33 publications

References 62 publications

Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast

Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast

Raw material choices and material characterization of the 3^rd and 2^nd millennium BC pottery from the Petit‐Chasseur necropolis: Insights into the megalith‐erecting society of the Upper Rhône Valley, Switzerland

Rare earth element geochemistry during weathering of S‐type granites from dry to humid climates of Brazil

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Influence of metaluminous granite mineralogy on the rare earth element geochemistry of rocks and soils along a climosequence in Brazil

Cited by 33 publications

References 62 publications

Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast

Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast

Raw material choices and material characterization of the 3rd and 2nd millennium BC pottery from the Petit‐Chasseur necropolis: Insights into the megalith‐erecting society of the Upper Rhône Valley, Switzerland

Rare earth element geochemistry during weathering of S‐type granites from dry to humid climates of Brazil

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Raw material choices and material characterization of the 3^rd and 2^nd millennium BC pottery from the Petit‐Chasseur necropolis: Insights into the megalith‐erecting society of the Upper Rhône Valley, Switzerland