Results 11 to 20 of about 1,983 (261)
In situ U-Pb Isotope Dating Techniques for Sandstone-type Uranium Deposits
Yankuang ceshi, 2020 BACKGROUND Uranium mineral dating has been difficult to ascertain in mineralization chronology. With the development of in situ U-Pb isotope dating technology, it is possible to directly date ore minerals (uranium minerals).
XIAO Zhi-bin +6 more
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U–Pb zircon ages of the host rocks of the Juomasuo Au–Co–Cu deposit, northeastern Finland [PDF]
Bulletin of the Geological Society of Finland, 2017 The Salittu Formation is one of the few metavolcanic successions in the U-Pb zircon single grain dating using the LA-MC-ICP-MS technique was utilized to determine the age of the host rocks of the Juomasuo Au-Co-Cu deposit located in the late Archean ...
P. Nikkola, I. Mänttäri, O.T. Rämö
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Yankuang ceshi, 2020 OBJECTIVES The Xiuwacu Mo-W deposit is a typical hydrothermal quartz vein deposit in the Yidun island arc Cu-Mo metallogenic belt, northwest Yunnan. Numerous studies have been conducted on rock and ore chronology and petrogenesis, dynamics, but its ore ...
WANG Zhong-qiang +7 more
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In situ determination of antimony isotope ratios in Sb minerals by femtosecond LA-MC-ICP-MS
Journal of Analytical Atomic Spectrometry, 2021 Here we present a method for in situ determination of stable antimony (Sb) isotope compositions by ultraviolet (UV)-femtosecond-laser-ablation-multi-collector-ICP-MS (fs-LA-MC-ICP-MS).
A. B. Kaufmann +4 more
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Yankuang ceshi, 2022 BACKGROUND Sandstone-type uranium deposits contain a large number of pyrites of different shapes and stages. It is difficult to accurately discriminate the pyrite formed before, during or after the metallogenic period solely by observation of pyrite ...
ZHANG Xiaorui +11 more
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Anais da Academia Brasileira de Ciências, 2009 Age determinations using the 235U and 238U radioactive decay series to the daughter isotopes 207Pb and 206Pb, respectively, using the mineral zircon (ZrSiO4), are widely used to decipher geological processes.
Bernhard Bühn +3 more
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Frontiers in Chemistry, 2023 The concentration of rare earth elements (REEs) in geological materials including SLRS-6 (natural water certified reference material) and JB1b, JA1, and JG2 (Standard Rock Materials of Geological Survey of Japan) can be used as a tracer to characterize ...
Seung-Gu Lee, Kyung-Seok Ko
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UPb LA-(MC)-ICP-MS dating of rutile: New reference materials and applications to sedimentary provenance [PDF]
Chemical Geology, 2013 In response to the general lack of sufficiently abundant and high quality rutile UPb reference materials for in situ geochronology, we have characterised two new potential rutile ~ 1.8 Ga reference materials (Sugluk-4 and PCA-S207) from granulite facies belts of the Canadian Shield, namely the northern Cape Smith Belt of Quebec and the Snowbird ...
Bracciali, Laura +4 more
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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 +3 more
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Comptes Rendus. Géoscience, 2023 This paper presents new U–Th ages obtained by LA-MC-CP-MS (laser ablation - multi-collector - inductively coupled plasma - mass spectrometry) on coral samples from a sedimentary core of the Tunis lagoon. The ages and calculated ($\mbox {}^{234}$U/$\mbox {
Condomines, Michel +3 more
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