Results 11 to 20 of about 2,514 (184)

Rapid Purification of Sr and Nd for Isotope Analysis with Multiple-column Method

Yankuang ceshi, 2020
BACKGROUND The Sr and Nd isotopic compositions of a sample depend on its initial isotopic ratios, the ratios between the parent nuclide and daughter product, and the decay time.
ZHU Zhi-yong, PAN Chen-xu, ZHU Xiang-kun
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Implications of Nd isotopic mapping for crustal composition and metallogenesis in the Sanjiang orogenic belt (SW China)

Frontiers in Earth Science, 2023
The Sanjiang orogenic belt, located in southwestern China and the southeastern Tibetan Plateau, includes a variety of economically important metal deposits.
Lingling Yuan, Peng Chai, Zengqian Hou, Yuanchuan Zheng, Haihui Quan   +4 more
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Reference Material Preparation of 143Nd/144Nd Isotope Ratio

Yankuang ceshi, 2017
143Nd/144Nd isotope ratio is the key for Sm-Nd isotope method. The 143Nd/144Nd isotope ratio of geological samples varies within a small range, and thus the 143Nd/144Nd isotope ratio analysis must be precise.
TANG Suo-han, LI Jin, LIANG Xi-rong, ZHANG Li-guo, LI Guo-zhan, PU Wei, LI Chao-feng, YANG Yue-heng, CHU Zhu-yin, ZHANG Jun, HOU Ke-jun, WANG Xiao-ming   +11 more
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The Vazante and Canastra groups revisited: Sm-Nd and Sr isotopes - evidence for contribution from Tonian intraplate magmatism during passive margin development along the SW São Francisco margin, Brazil

Brazilian Journal of Geology, 2019
Combined Sm-Nd isotope studies and U-Pb ages of detrital zircons have shown significant differences between the provenance patterns of Neoproterozoic metasedimentary successions in the Southern Brasília belt.
Manuela de Oliveira Carvalho, Claudio de Morisson Valeriano, Carla Cristine Aguiar Neto, Gustavo Diniz Oliveira, Monica Heilbron   +4 more
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Separation of Sr, Nd, and U from Geological Samples Using Tandem Resin Column

Yankuang ceshi, 2023
BACKGROUND Uranium-series nuclides are one of the three major radioactive decay systems, which are suitable for studying various geological processes at different time scales. In addition, 87Sr/86Sr and 143Nd/144Nd isotopes (Sr-Nd isotopes for short) are
LUO Zhenghua, LI Chao, LAI Zheng, WANG Chenyu, GUO Yulong, DUAN Zhifei, XU Juan, YANG Shouye   +7 more
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Simultaneous in situ determination of U‐Pb and Sm‐Nd isotopes in monazite by laser ablation ICP‐MS

Geochemistry, Geophysics, Geosystems, 2014
Results are presented for in situ simultaneous determination of U‐Pb and Sm‐Nd isotopes in monazite using the Laser Ablation Split‐Stream (LASS) method. This method uses a laser ablation system coupled to a magnetic‐sector inductively coupled plasma mass
Dylan J. Goudie, Christopher M. Fisher, John M. Hanchar, James L. Crowley, John C. Ayers   +4 more
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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
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Sm-Nd data for mafic-ultramafic intrusions in the Svecofennian (1.88 Ga) Kotalahti Nickel Belt, Finland - Implications for crustal contamination at the Archaean/Proterozoic boundary [PDF]

Bulletin of the Geological Society of Finland, 2007
Sm-Nd data were determined for eight mafic-ultramafic intrusions from the Svecofennian (1.88 Ga) Kotalahti Nickel Belt, Finland. The intrusions represent both mineralized and barren types and are located at varying distances from the Archaean/Proterozoic
H.V. Makkonen, H. Huhma
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Sr-Nd-Hf Isotopic Disequilibrium During the Partial Melting of Metasediments: Insight From Himalayan Leucosome

Frontiers in Earth Science, 2022
Radiogenic isotopes of granitoids are widely applied to fingerprint the source of granitoids and study the magma mingling and assimilation processes, aiming to decipher the planetary differentiation.
Lei Yang, Lei Yang, Lei Yang, Jia-Min Wang, Xiao-Chi Liu, Gautam P. Khanal, Gautam P. Khanal, Fu-Yuan Wu, Fu-Yuan Wu   +8 more
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Petrogenesis of the Paleoproterozoic Näränkävaara layered intrusion, northern Finland, Part II: U-Pb ID-TIMS age and Sm-Nd isotope systematics [PDF]

Bulletin of the Geological Society of Finland, 2022
Several mafic-ultramafic layered intrusions were emplaced in the NE Fennoscandian Shield during a magmatic episode at 2.44 Ga. The Paleoproterozoic Näränkävaara layered intrusion, northern Finland, is one of the largest ultramafic bodies in the ...
Ville Järvinen, Tapio Halkoaho, Jukka Konnunaho, Jussi S. Heinonen, Sandra Kamo, Sarah Davey, Wouter Bleeker, Tuomo Karinen, O. Tapani Rämö   +8 more
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