Results 31 to 40 of about 1,457 (180)

Evaluating the effect of leaching on trace element and Nd-Pb isotopic systematics in continental basalts

Solid Earth Sciences, 2019
Leaching technique was mostly carried out on submarine rock powder to minimize or eliminate secondary effect of seawater interaction on Sr and Pb isotope magmatic signatures.
Yan Zhang, Xun Wei, Xuefa Shi, Yigang Xu, Zhongyuan Ren, Quanshu Yan, Yili Guan   +6 more
doaj   +1 more source

Isotopic systematics of zircon indicate an African affinity for the rocks of southernmost India

Scientific Reports, 2020
Southern India lies in an area of Gondwana where multiple blocks are juxtaposed along Moho-penetrating structures, the significance of which are not well understood.
Chris Clark, Alan S. Collins, Richard J. M. Taylor, Martin Hand   +3 more
doaj   +1 more source

Zircon U–Pb Dating and Lu-Hf Isotope of the Retrograded Eclogite from Chicheng, Northern Hebei Province, China

Shock and Vibration, 2021
We report zircon U–Pb ages and Lu-Hf isotopic data from two sample of the retrograded eclogite in the Chicheng area. Two groups of the metamorphic zircons from the Chicheng retrograded eclogite were identified: group one shows characteristics of ...
Xu Kong, Xueyuan Qi, Wentian Mi, Xiaoxin Dong   +3 more
doaj   +1 more source

Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast

Литосфера, 2020
Research subject. The isotopic composition (Pb-Pb, Sm-Nd, Rb-Sr, Os/Os, Hf/Hf, 3 He/4 He, etc.) of magmatic complexes and ore-magmatic systems (OMS) of two ore clusters (Kupolsky and Ilirneysky) located in the subpolar Western Chukotka was studied. These
V. G. Sakhno, L. S. Tsurikova
doaj   +1 more source

Geochronological Constraint on the Evolution of the Aktyuz Terrane, Kyrgyz North Tianshan, and the Fate of the Taldybulak Levoberezhny Gold Deposit

Frontiers in Earth Science, 2021
The Aktyuz Terrane in Kyrgyz North Tianshan is of particular interest due to the occurrence of high and ultrahigh pressure (HP–UHP) rocks and it containing the third largest gold deposit in Kyrgyz North Tianshan, i.e., Taldybulak Levoberezhny ...
Wei Xi, Wei Xi, Wei Xi, Nuo Li, Nuo Li, Xiaohong Xia, Xiaohong Xia, Xiaoxiao Ling, Yanshuang Wu, Yanshuang Wu   +9 more
doaj   +1 more source

SOURCES OF LOWER PALEOZOIC SANDSTONES FROM THE NORA-SUKHOTINO TERRANE: RESULTS OF U-Th-Pb AND Lu-Hf ISOTOPE STUDIES OF THE DETRITAL ZIRCONS

Геодинамика и тектонофизика, 2022
This paper presents the results of comprehensive geological and geochemical studies of sandstones from the Belaya basin of the Amur fragment of the Nora-Sukhotino terrane of the northeastern flank of South Mongolia-Khingan orogenic belt, as well as the ...
Y. V. Smirnov
doaj   +1 more source

Combined U-Pb and Lu-Hf isotope analyses by laser ablation MC-ICP-MS: methodology and applications

Anais da Academia Brasileira de Ciências, 2010
The Lutetium-Hafnium isotopic system represents one of the most innovative and powerful tools for geochronology and isotopic studies. Combined U-Pb and Lu-Hf in situ analyses on zircon by LA-MC-ICP-MS permit to characterize isotopically the host magma ...
Massimo Matteini, Elton L. Dantas, Marcio M. Pimentel, Bernhard Bühn   +3 more
doaj   +1 more source

Study of hyperfine interactions in spinel cobalt ferrite CoFe2O4 doped with Hf, Lu, and Yb using Mössbauer spectroscopy and perturbed γ-γ angular correlation

Конденсированные среды и межфазные границы
We studied hyperfine interactions (HFI) in spinel cobalt ferrite (ferrospinel) CoFe2O4 doped with Lu, Yb, and Hf (1 wt. %) by Mössbauer spectroscopy (MS) on 57Fe nuclei.
Viktor M. Vakhtel, Atanas I. Velichkov, Dimitar V. Karaivanov, Maria M. Milanova, Yuri G. Segal, Nargiza Temerbulatova, Dmitry V. Filosofov, Martin P. Tsvetkov   +7 more
doaj   +1 more source

Paleo-Tethys subduction and arc-continent collision: Evidence from zircon U-Pb chronology, geochemistry and Sr-Nd-Hf isotopes of eclogites in western Yunnan, bangbing area, southeastern Tibetan Plateau

Frontiers in Earth Science, 2022
The Changning-Menglian suture zone (CMSZ) in the southeastern Tibetan Plateau is a newly discovered HP-UHP metamorphic zone. The eclogites therein are the key evidence constraining the main suture of the Proto- and Paleo-Tethys Ocean in western Yunnan ...
Yuzhen Fu, Yuzhen Fu, Zhimin Peng, Zhimin Peng, Guozhi Wang, Guozhi Wang, Jingfeng Hu, Zhang Zhang, Junlei Guan, Fei Ren   +9 more
doaj   +1 more source

Strategies towards robust interpretations of in situ zircon Lu–Hf isotope analyses

Geoscience Frontiers, 2020
Abstract The combination of U–Pb and Lu–Hf compositions measured in zircon crystals is a remarkably powerful isotopic couplet that provides measures on both the timing of mineral growth and the radiogenic enrichment of the source from which the zircon grew.
Spencer, C.J., Kirkland, C.L., Roberts, N.M.W., Evans, N.J., Liebmann, J.   +4 more
openaire   +2 more sources