scholarly journals THE ORIGIN OF AMPHIBOLITE CLASTS IN GRAYWACKE FROM THE ELMUS STRUCTURE ACCORDING TO THE STUDY OF RARE AND RARE-EARTH ELEMENTS DISTRIBUTION (VEDLOZERO-SEGOZERO GREENSTONE BELT, KARELIA)

2019 ◽  
pp. 79
Author(s):  
Антонина Васильевна Дмитриева ◽  
Antonina Dmitrieva
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Greenstone Belt ◽  
Rare Earth Elements Distribution

Chemical, mineralogical and rare earth elements distribution study of phosphorites from Sra Ouertane deposit (Tunisia)

2019 ◽  
Vol 157 ◽  
pp. 103505
Author(s):  
Mariem Bouabdallah ◽  
Sarra Elgharbi ◽  
Karima Horchani-Naifer ◽  
Donatella Barca ◽  
Nabil Fattah ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Distribution Study ◽  
Rare Earth Elements Distribution

scholarly journals The rare-earth elements distribution in the Bazhenov shales

2019 ◽  
Vol 98 ◽  
pp. 03001
Author(s):  
Ekaterina Kazak ◽  
Natalia Kharitonova ◽  
Yana Sorokoumova
Keyword(s):  
Rare Earth ◽  
Correlation Analysis ◽  
Rare Earth Elements ◽  
Western Siberia ◽  
Water Extract ◽  
Distribution Data ◽  
Bazhenov Formation ◽  
The One ◽  
Rare Earth Elements Distribution ◽  
The Rare Earth

The rare-earth elements and yttrium (REY) distribution data with depth in the Bazhenov formation are given for the case of the one well in the Nizhnevartovsk arch of the Western Siberia, Russian Federation. According to the correlation analysis, it was found that REY (mainly LREE) is concentrated in apatite more than in clays or plagioclase, while HREE is preferably accumulated in clay minerals. It was estimated that the water extracts from the Bazhenov formation contain REY up to 0.014 ppb, while LREE is contained in 3.6 times more than HREE. An attempt to estimate the REY content in the pore water of the Bazhenov formation was made using water extract composition data.

scholarly journals Dissolved rare earth elements distribution in the Solomon Sea

2019 ◽  
Vol 524 ◽  
pp. 11-36 ◽  
Author(s):  
V.Q. Pham ◽  
M. Grenier ◽  
S. Cravatte ◽  
S. Michael ◽  
S. Jacquet ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Rare Earth Elements Distribution

Heavy metals and rare earth elements distribution in the brine fields of awe, keana and giza, central benue trough, Nigeria

2019 ◽  
Vol 157 ◽  
pp. 103514
Author(s):  
Obialo Solomon Onwuka ◽  
Nuhu Degree Umar ◽  
Olufemi Victor Omonona ◽  
Ibrahim Giza Idris
Keyword(s):  
Heavy Metals ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Benue Trough ◽  
Rare Earth Elements Distribution

Two-stage evolution in an Archean tonalite suite: the Taschereau stock, Abitibi (Quebec, Canada)

1991 ◽  
Vol 28 (2) ◽  
pp. 172-183 ◽  
Author(s):  
Michel Jébrak ◽  
Luc Harnois
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Trace Element ◽  
Greenstone Belt ◽  
Shear Zones ◽  
Granitic Rocks ◽  
Element Abundances ◽  
Abitibi Greenstone Belt ◽  
Rock Types ◽  
End Members

The Taschereau stock occurs north of Timmins and Val-d'Or, Quebec, in the Abitibi greenstone belt of the Superior Province. This late Archean composite pluton is composed mainly of diorite–tonalite–trondhjemite cut by granitic rocks. Gold–molybdenum occurrences are associated with a zone of albite-rich rocks surrounding the granitic rocks. Diabase dykes and shear zones postdate all rock units. Field and geochemical evidence suggests that the Taschereau stock was emplaced diachronously. Trace-element geochemical modelling shows that trace-element abundances (rare-earth elements, Ti, Zr) of Taschereau granitic rocks are consistent with partial melting of preexisting Taschereau tonalitic rocks and implies that these two rock types are not end members of a single magma that evolved through fractional crystallization.

scholarly journals CONTENT OF RARE-EARTH ELEMENTS IN GROUNDWATERS OF UPPER JURASSIC SEDIMENTS OF THE VERKH-TARSK OIL FIELD (WESTERN SIBERIA)

2019 ◽  
Vol 2 (1) ◽  
pp. 141-148
Author(s):  
Dmitry Novikov ◽  
Anatoly Chernykh ◽  
Fedor Dultsev
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Western Siberia ◽  
Upper Jurassic ◽  
Oil Field ◽  
A Value ◽  
Free Ions ◽  
First Time ◽  
Rare Earth Elements Distribution

The results of the analysis of rare earth elements distribution in groundwater of J1 reservoir of the Verkh-Tarka oil field are reported for the first time. It was established that groundwater with Cl Na composition are predominate, with a value of total mineralization from 24.7 up to 48.9 g/dm3. The content of REE ranges from 3.72 to 30.49 µg/dm3 with an average of 13.61 µg/dm3. The highest concentrations are observed (µg/dm3) in La (up to 20.8), Eu (up to 7.9), Gd (up to 1.8) and Dy (up to 0.65). The level of dissolved REE is determined by their distribution in the water-bearing sandstones. Migration of rare-earth elements is carried out in the form of free ions and hydroxide complexes.

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