全部文献期刊会议图书|学者科研项目
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作者:Y. J. Bhaskar Rao , B. Sreenivas , T. Vijaya Kumar ...
来源:[J].Journal of the Geological Society of India(IF 0.567), 2017, Vol.90 (6), pp.752-760
摘要:... Utilizing the drill core from borehole KBH-1 near Rasati village, we present here in situ Laser Ablation — Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS) and LA-MC (multi collector)-ICPMS zircon U-Pb age and Hf-isotopic composition for two samples along with a br...
作者:K. Billström , P. Evins , O. Martinsson ...
来源:[J].Precambrian Research(IF 4.441), 2018
摘要:... Age data from rock lithologies hosting these ores, represented by metamorphosed rocks of the Porphyrite and Kiirunavaara Groups, are complex to interpret. This is illustrated by (LA-ICP-MS) data for titanite, and to some extent for rutile, which scatter considerably yielding ...
作者:Marcos Müller Bicca , Andrea Ritter Jelinek , Ruy Paulo Philipp ...
来源:[J].Journal of African Earth Sciences(IF 1.229), 2018, Vol.138, pp.42-57
摘要:... U-Pb LA-MC-ICPMS dating and Lu-Hf isotopic analysis of detrital zircons from the Late Permian-Early Triassic Matinde Formation of the Karoo Supergroup is used as a reliable proxy to map denudation patterns of source regions. Data allow discrimination of U-Pb age populatio...
作者:Kai Qu , Xianzhang Sima , Hongying Zhou ...
来源:[J].Journal of Asian Earth Sciences(IF 2.379), 2019, Vol.173, pp.352-363
摘要:... To determine the timing of REE mineralization and explore possible genetic relationships between mineralization and granitic magmatism, the U-Pb ages of bastnäsite-(Ce) from ore and zircon from ore-hosting granite are obtained. The in situ LA-MC-ICP-MS U-Pb age of the ba...
作者:Fuyuan Wu , Deyou Sun , Huimin Li ...
来源:[J].Chinese Science Bulletin(IF 1.319), 2000, Vol.45 (16), pp.1514-1518
摘要:... One undeformed granitic rock sample gives a U-Pb age of (305±2) Ma, and the mylonitic granite yields a U-Pb age of (165±3) Ma. Both of the two samples contain no inherited zircon, which suggests that there is no large-scale Precambrian crystalline basement beneath the So...
作者:O.M. Turkina , S.A. Sergeev , V.P. Sukhorukov ...
来源:[J].Russian Geology and Geophysics(IF 0.894), 2017, Vol.58 (9), pp.1018-1031
摘要:... High-alumina paragneisses contain detrital zircons varying in age from 3.7 to 2.74 Ga and corresponding in REE patterns to magmatic zircons. The Paleoproterozoic (~ 1.86 Ga) metamorphic zircons are strongly depleted in HREE and Y as a result of their formation in equilibrium...
作者:Xiao-Yan Jiang , Xian-Hua Li , W.J. Collins ...
来源:[J].LITHOS(IF 3.779), 2015, Vol.239, pp.60-70
摘要:Abstract(#br)A compilation of magmatic ages from the Mesozoic South China Block suggests a number of “magmatic quiescence” periods at ca. 205–195 Ma, ca. 150–140 Ma and ca. 125–115 Ma, casting doubt on tectonic models that suggest ongoing Andean-type subduction along ...
作者:XianHua Li , GuoQiang Tang , Bing Gong ...
来源:[J].Chinese Science Bulletin(IF 1.319), 2013, Vol.58 (36), pp.4647-4654
摘要:Abstract(#br)Zircon is the most useful mineral for studies in U-Pb geochronology and Hf and O isotope geochemistry. Matrix effect is a major problem of the microbeam techniques such as SIMS and LA-(MC)-ICPMS. Therefore, external standardization using well-characterized natura...
作者:Shao-Bing Zhang , Yong-Fei Zheng , Yuan-Bao Wu ...
来源:[J].Precambrian Research(IF 4.441), 2006, Vol.151 (3), pp.265-288
摘要:... In order to decipher the nature of Paleoproterozoic event in South China, a combined study of zircon U-Pb dating, Hf and O isotope analyses was carried out for metasediments and amphibolite from the Kongling terrane, the only Archean microcontinent outcropped in South China. ...
作者:Duo Zhang , Yong-jiang Liu , Wei-min Li ...
来源:[J].Gondwana Research(IF 7.396), 2020, Vol.78, pp.92-109
摘要:... yield the youngest zircon U-Pb age of 142 ± 2 Ma, indicating the emplacement of the RAC not earlier than the Late Jurassic. Thus, the RAC might start to accrete from the Jurassic and emplace during 142–131 Ma, resulted from the Paleo-Pacific subduction which started fr...

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