Rare earth elements in the bimodal Mount Peyton batholith: Evidence of crustal anatexis by mantle-derived magma

1982 ◽  
Vol 19 (2) ◽  
pp. 308-315 ◽  
Author(s):  
D. F. Strong ◽  
C. Dupuy
Keyword(s):  
Trace Elements ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Mafic Magma ◽  
Crustal Melting ◽  
Crustal Anatexis ◽  
Fractionation Process ◽  
Rock Types ◽  
Liquid Fractionation ◽  
Representative Samples

The Mount Peyton batholith of central Newfoundland is one of many Siluro-Devonian ("Acadian") plutons of the Appalachians with contrasting mafic and silicic compositions. The distributions of rare earth and other trace elements in 18 representative samples indicate that the contrasting rock types are not genetically related by any crystal–liquid fractionation process. Rather they support earlier suggestions that the granitic melt was generated by crustal melting due to intrusion of the mantle-derived mafic magma, and the two evolved independently through processes involving some crystal fractionation and contamination with country rocks during ascent.

scholarly journals Geoquímica de las rocas plutónicas del batolito cambro-ordovícico del Cordón de Lila y de la Sierra de Almeida, Región de Antofagasta, Chile

2020 ◽  
Vol 47 (3) ◽  
pp. 628
Author(s):  
Hans Niemeyer Rubilar
Keyword(s):  
Trace Elements ◽  
Rare Earth ◽  
Chemical Composition ◽  
Mafic Magma ◽  
Northern Chile ◽  
Crustal Rocks ◽  
Upper Cambrian ◽  
Rock Types ◽  
Original Magma ◽  
The Difference

An Upper Cambrian-Ordovician (490-460 Ma) batholith crop out along the Cordón de Lila and Sierra de Almeida, in the Antofagasta region, northern Chile, which belongs to the Famatinian arc. Two plutonic rock types can be distinguished: granodiorites and monzogranites. The first lithology is positioned along an occidental fringe in as much the second is located along an oriental part of the batholith. The main geochemical difference between the two lithologies is the enrichment in silica and K of the second with respect of the first one. Most of the granodiorites are metaluminous or are located between the metaluminous and peraluminous fields. The monzogranites are mostly peraluminous. The chemical composition of the plutons (mayor and trace elements and rare earth elements) allow to infer a common origin for both groups, from a mafic magma that evolved by fractional crystallization. The difference in composition between both lithologies, specially the meta or peraluminous character, can be explained by means a different degree of interaction of the original magma with the felsic crustal rocks.

Effective procedures for the determination of As, Cd, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Th, Zn, U and rare earth elements in plants and foodstuffs

2018 ◽  
Vol 10 (33) ◽  
pp. 4094-4103 ◽  
Author(s):  
Fernanda Pollo Paniz ◽  
Tatiana Pedron ◽  
Bruna Moreira Freire ◽  
Daiane Placido Torres ◽  
Fábio Ferreira Silva ◽  
...  
Keyword(s):  
Trace Elements ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Icp Ms ◽  
International Regulations ◽  
Effective Procedures

There are several international regulations regarding trace elements. The use of ICP-MS for their determination is usually a difficult task, especially when Hg is one of the target elements.

scholarly journals Comparison of the Mineral and Nutraceutical Profiles of Elephant Garlic (Allium ampeloprasum L.) Grown in Organic and Conventional Fields of Valdichiana, a Traditional Cultivation Area of Tuscany, Italy

Biology ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1058
Author(s):  
Stefano Loppi ◽  
Riccardo Fedeli ◽  
Giulia Canali ◽  
Massimo Guarnieri ◽  
Stefano Biagiotti ◽  
...  
Keyword(s):  
Trace Elements ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Water Content ◽  
Human Health ◽  
Soluble Sugars ◽  
Allium Ampeloprasum ◽  
Icp Ms ◽  
Essential Trace Elements ◽  
Reference Plant

In the Valdichiana area (Tuscany, Italy) an ancient native landrace of elephant garlic (Allium ampeloprasum L.), locally known as “Aglione della Valdichiana”, has long been cultivated. The aim of this study was to check whether there are differences in the mineral and nutraceutical profiles of the Aglione della Valdichiana cultivated conventionally and organically. Based on the analysis by ICP-MS of a wide array of major, minor, essential, and non-essential trace elements as well as rare earth elements, and the evaluation of the content of polyphenols, flavonoids, antioxidants, soluble proteins, soluble sugars, and starch, as well as the weight and water content, it was concluded that differences in the mineral and nutraceutical profiles of organically and conventionally grown bulbs were very limited. Only a statistically (p < 0.05) higher concentration of Cd (+2620%), Co (+113%), Mn (+55%), Rb (+180%), and Sb (+180%), as well as glucose (+37%) in conventionally cultivated bulbs emerged. Cadmium was the only element slightly higher than in the “reference plant,” but with a negligible risk (three orders of magnitude lower) for human health based on consumption. It is concluded that we failed to find evidence of healthier food or a higher nutraceutical quality for organically cultivated elephant garlic.

scholarly journals Identifying Correlation of Coal Seams in the Tien Hai Area, Northern Vietnam by Using Multivariate Statistic Methods

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
The Hung KHUONG ◽  
Phuong NGUYEN ◽  
Thi Cuc NGUYEN ◽  
Nhu Sang PHAM ◽  
Danh Tuyen NGUYEN
Keyword(s):  
Trace Elements ◽  
Rare Earth ◽  
Coal Seam ◽  
Rare Earth Elements ◽  
Major And Trace Elements ◽  
Coal Seams ◽  
Multivariate Statistic ◽  
Northern Vietnam ◽  
Coal Deposits ◽  
Indicator Elements

In northern Vietnam, the Tien Hai area is considered a high potential area of coal deposits. Twohundred fifty-six geochemical coal samples of 13 cores in the Tien Hai area investigate coal seams andcoal deposits to identify the correlation of coal seams. According to the statistical method and clusteranalysis of geochemical samples, the results indicate that the Mg, V, As, Ca, Zn, Cr, Co, K, Na, Sr, Fe,Ge, Re, U, Mo, Th, and Ga elements are good indicator elements of the major and trace elements in coal.Most of them comply with the normal or lognormal distribution rules. Besides, the Yb, Sc, Ho, Er, Tm,Lu, Y, Tb, Pr, Dy, and Sm elements are also good indicator elements for rare earth elements in the region.Therefore, the selected elements are used to identify the correlation of the coal seams in the Tien Hai area.Based on the similarity degree between studied objects, the results of grouping boreholes in coal seamsshow that the correlation of coal seam TV2-11 is suitable and acceptable, the coal seams TV3-6a, TV3-6b, and TV3-6c can be grouped into the coal seam TV3-6. These results present that the models can helpstudy geochemical coal samples and identify the correlation of the coal seams in the Tien Hai area.Additionally, the statistical analysis shows a remarkable degree to determine the correlation of the coalseams. Geochemical coal data can help to evaluate the indicator elements of the major, trace elements,and rare earth elements in coal seams and coal rashing of adjoining and pillar rocks in the Tien Hai area,northern Vietnam.

scholarly journals Geochemical behaviour of Rare Earth Elements (REE) and other trace elements in a former Uranium Mine

2021 ◽  
Author(s):  
Andres Cardenas Niño ◽  
Rosa Marques ◽  
Maria Dias ◽  
Catarina Diamantino ◽  
Edgar Carvalho
Keyword(s):  
Trace Elements ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Uranium Mine ◽  
Geochemical Behaviour
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