Results 11 to 20 of about 599,791 (275)

Closure temperatures of the Sm—Nd system in metamorphic garnets [PDF]

open access: yesEarth and Planetary Science Letters, 1992
Abstract Garnet-whole rock and garnet-mineral isochrons were determined on granulite facies gneisses and amphibolites from the Archean Pikwitonei Granulite Domain of the Superior Province, and the Proterozoic Central Gneiss Belt and Adirondack Highlands of the Grenville orogen.
Mezger, Klaus   +2 more
openaire   +5 more sources

Dielectric properties of Sm, Nd and Fe doped Bi1.5Zn0.92Nb1.5O6.92 pyrochlores

open access: yesCeramics International, 2011
Abstract New pyrochlore ceramics have been produced by doping Sm and Nd into the Bi site and Fe into the Nb site in the Bi 1.5 Zn 0.92 Nb 1.5 O 6.92 (BZN) pyrochlore. Doped pyrochlore ceramics were produced by conventional solid state mixing of oxides at different doping levels using the compositions of Bi 1.5− x Sm x Zn 0.92 Nb 1.5 O 6.92 , Bi 1.
Mergen, A.   +3 more
openaire   +4 more sources

Calibration of Sm-Nd mixed spike by teflon powder method

open access: yesJournal of Analytical Science and Technology, 2010
Isotopic composition of Sm-Nd mixed spike was calibrated by teflon powder method. Sm and Nd isotopic compositions of the spike were externally calibrated with reference to the nNdβ standard and normal Sm.
Chang-Sik Cheong, Sung-Tack Kwon
doaj   +1 more source

Sm-Nd Isotope Data Compilation from Geoscientific Literature

open access: yes, 2023
Derived from tables within geoscientific literature, we utilized our advanced automated tabular data collection tool to extract data from 3,959 geoscientific articles specifically focusing on Sm-Nd isotopes, out of an extensive repository of over 20,000 ...
Tao Wang (14837659)   +6 more
core   +1 more source

Rb-Sr, Sm-Nd ages of the Phalaborwa Carbonatite Complex, South Africa [PDF]

open access: yes, 2005
P(論文)We analyzed Rb-Sr and Sm-Nd isotopic compositions of whole-rock and minerals from syenite, biotite gneiss xenolith, dolerite dyke, phoscorite, and carbonatite from the Phalaborwa Carbonatite Complex located in northeastern Transvaal, South Africa ...
Hirahara, Yuka   +3 more
core   +1 more source

Sm-Nd mineral isochron age of sapphirine-quartz gneiss from the Mt. Riiser-Larsen area in the Napier Complex, East Antarctica [PDF]

open access: yes, 2001
P(論文)The Archaean Napier Complex in East Antarctica yields gneisses, including sapphirine+quartz assemblage that is diagnostic of ultra-high temperature (UHT) metamorphism.
Ishizuka, Hideo   +3 more
core   +1 more source

TbCu7-type Sm-X-Fe compounds (X = Zr, Hf, Y, Dy, La, Ce and Nd) synthesized by low-temperature reduction-diffusion (LTRD) process using molten salt

open access: yesAIP Advances, 2022
TbCu7-type Sm-Fe-N anisotropic powder with a high Fe content has the potential to surpass the Nd-Fe-B magnet. In this study, elemental substitution of Sm in a Sm-Fe system was investigated for the purpose of synthesizing Fe-rich TbCu7-type Sm-Fe ...
Jungryang Kim   +2 more
doaj   +1 more source

Rb-Sr and Sm-Nd dating of olivine-phyric shergottite Yamato 980459: Petrogenesis of depleted shergottites [PDF]

open access: yes, 2005
P(論文)Martian meteorite Yamato (Y) 980459 has undergone terrestrial weathering in Antarctica. The weathering has affected the Sm-Nd isotopic system. Acid-washed pyroxenes, whole rock and quenched glass samples define a Sm-Nd isochron age of 472±47 (±2σ ...
Misawa,Keiji   +4 more
core   +1 more source

Provenance of fine-grained sedimentary rocks derived from Rb-Sr and Sm-Nd analyses: the example of the Santa Maria Formation (Triassic, Parana Basin, Southern Brazil)

open access: yesLatin American Journal of Sedimentology and Basin Analysis, 2021
In this work, the Rb-Sr and Sm-Nd methods were applied to fine-grained sedimentary rock samples of the Santa Maria Formation (Triassic, Paraná Basin) in order to have provenance information.
Diogo Rodrigues Andrade Da Silva   +4 more
doaj   +2 more sources

On the age of pyrochlore carbonatites from the Ilmeno-Vishnevogorsky Alkaline Complex, the Southern Urals (insights from Rb-Sr and Sm-Nd isotopic data)

open access: yesЛитосфера, 2020
Research subject. In this research, we carried out Sm-Nd- и Rb-Sr-dating of pyrochlore carbonatite from the Vishnevogorsky niobium deposit, Ilmeno-Vishnevogorsky Alkaline Complex, Southern Urals.
I. L. Nedosekova   +5 more
doaj   +1 more source

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