Results 31 to 40 of about 447,630 (329)

Garnet–monazite rare earth element relationships in sub-solidus metapelites: a case study from Bhutan [PDF]

, 2018
A key aim of modern metamorphic geochronology is to constrain precise and accurate rates and timescales of tectonic processes. One promising approach in amphibolite and granulite-facies rocks links the geochronological information recorded in zoned ...
Argles, Tom W., Greenwood, Lucy V., Harris, Nigel B. W., Parrish, Randall R., Roberts, Nick M. W., Warren, Clare J.   +5 more
core   +9 more sources

Geochemical features and formation conditions of the cupriferous sandstones of the Orenburg Pre-Urals

Литосфера, 2018
Object. The article describes a new geological and geochemical data for Permian host rocks and copper sandstones (CS) in Orenburg’s Pre-Urals. Methods .
Alexander V. Volkov, Ivan A. Novikov, Alexander A. Razumovsky, Konstantin Y. Murashov, Nina V. Sidorova   +4 more
doaj   +1 more source

Petrogenesis and Geochemistry of REE of Intrusive Rocks, Skarn Zone, and Iron Ore of Shotorsang, Northwest of Neyshabour

Journal of Economic Geology, 2023
Shotorsang iron skarn is located in 60 km northwest of Neyshabour (Khorasan Razavi, Iran) in Quchan-Sabzevar magmatic belt. Subvolcanic intrusion rocks have intruded into Cretaceous limestones and created skarnization.
Seyed Ahmad Mazaheri , Mojtaba Heydari
doaj   +1 more source

REE fractionation during granite weathering and removal by waters and suspended loads: Sr and Nd isotopic evidence [PDF]

, 2001
Very few studies deal with REE (rare earth element) mobility within the system soil–soil solution–streamwater. In this article, we try to characterize the fractionation and the migration of the REE in a granite-derived soil system located in a small ...
Aubert, Dominique, Probst, Anne, Stille, Peter   +2 more
core   +2 more sources

Distribution, fractionation and sources of rare earth elements in suspended particulate matter in a tropical agricultural catchment, northeast Thailand [PDF]

PeerJ, 2021
Forty-eight suspended particulate matter (SPM) samples were collected from the Mun River, northeast Thailand and its junction with the Mekong River, to investigate the relationship between the distribution of rare earth elements (REE) in SPM and the ...
Kunhua Yang, Guilin Han, Jie Zeng, Wenxiang Zhou   +3 more
doaj   +2 more sources

Determination of the Content of the Rare Earth Elements (REE) in Akashat Phosphate rocks (Paliocene) in [PDF]

Kirkuk Journal of Science, 2009
The X-ray fluorescence technique meets the requirements of qualitative and quantitative analysis of widely variable major, minor and trace elements including rare earth elements (REE) in geological samples.
Kotayba T. Al-Youzbakey, Salim M. Al-Dabbagh   +1 more
doaj   +1 more source

Characterization and migration of atmospheric REE in soils and surface waters [PDF]

, 2002
Rainwater and snow collected from three different sites in France (Vosges Mountains, French Alps and Strasbourg) show more or less similar shapes of their REE distribution patterns.
Aubert, Dominique, Del Nero, Mireille, Gauthier-Lafaye, François, Pourcelot, Laurent, Probst, Anne, Stille, Peter   +5 more
core   +5 more sources

Investigation on geochemistry and genesis of Qahr-abad fluorite deposit, southeast of Saqqez, Kordestan province

Journal of Economic Geology, 2012
Qahr-abad fluorite deposit is located 58 km southeast of Saqqez, in northwestern Kordestan province and in northern end of Sanandaj-Sirjan Zone. The factors such as change in physicochemical conditions of mineralization environment (pH and Eh), variation
Babak Talaei, Ali Abedini
doaj   +1 more source

Prospects for identifying the Mississippi Valley type deposits in the North-East of Russia

Литосфера, 2020
Research subject. The Mississippi Valley type deposits make up about a third of the global balance of lead and zinc reserves, resources and production.
A. L. Galyamov, A. V. Volkov, K. Yu. Murashov, N. V. Sidorova, T. P. Kuznetsova   +4 more
doaj   +1 more source

Rare earth elements (REE) in wild macrofungi: a review highlighting the importance of requisite analytical methodology on data quality

Roczniki Panstwowego Zakladu Higieny
The accelerating global use of lanthanides in modern consumer goods has introduced a new source of environmental pollution and potential health hazards.
Jerzy Falandysz, Alwyn R. Fernandes, Anna Kilanowicz, Heesoo Eun   +3 more
doaj   +1 more source