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Yu-Ting Zhong
Chinese Academy of Sciences
12Publications
8H-index
309Citations
Publications 12
Newest
#1Hai-Quan Liu (CAS: Chinese Academy of Sciences)H-Index: 6
#2Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
Last.Wei Xie (Hohai University)H-Index: 9
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Abstract Low Nb Ta rhyolites from the Permian Tarim Large Igneous Province (LIP) represent the melting products of continental crust above a mantle plume. Zircon U Pb dating reveals that the Kuchehe and Dawanqi rhyolites were erupted at 292.6 ± 0.5 Ma and 274 ± 2 Ma respectively. Both rhyolite groups are characterized by pronounced negative Nb Ta anomalies, crust-like trace element ratios and negative eNd-Hf(t) values, consistent with a crustal origin. Newly acquired data, combined with availabl...
#1Yu-Ting Zhong (CAS: Chinese Academy of Sciences)H-Index: 8
#2Roland Mundil (Berkeley Geochronology Center)H-Index: 30
Last.MAJinlong (CAS: Chinese Academy of Sciences)H-Index: 16
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U–Pb geochronology using isotope dilution-thermal ionization mass spectrometry (ID-TIMS) is by far the most precise analytical technique. It affords the opportunity to determine 206Pb/238U dates with unprecedented precision often <1‰ on single analyses or weighted mean dates derived from multiple analyses. Pretreatment protocols for zircon analysis, and community-wide innovations spurred on by EARTHTIME tends to be at the leading edge of technological development. Also, more and more Chinese res...
#1Ying-ling Hou (CAS: Chinese Academy of Sciences)H-Index: 1
#2Yu-Ting Zhong (CAS: Chinese Academy of Sciences)H-Index: 8
Last.Bin He (CAS: Chinese Academy of Sciences)H-Index: 30
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Abstract The provenance of karstic bauxite deposits is difficult to constrain as such deposits are the products of intensively weathered rocks. We have studied the geochemistry of interbedded clastic rocks and isotopic characteristics of detrital zircons in late Permian karstic bauxite deposits in SW China to understand their provenance. The U–Pb ages of detrital zircons from both clastic rocks and bauxite ores show a peak at ~ 260 Ma. This peak age is within error of the sedimentary age (259.8 ...
#1Hai-Quan Liu (CAS: Chinese Academy of Sciences)H-Index: 6
#2Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
Last.Shi-Mai Shang-Guan (CAS: Chinese Academy of Sciences)H-Index: 2
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Abstract The Early Permian Tarim Large Igneous Province (LIP) in northwestern China contains a large area of silicic volcanics (~ 48,000 km 2 ) which are spatially and temporally associated with mafic–ultramafic rocks. In order to understand the behavior of crust above a mantle plume, selected rhyolitic samples are investigated in terms of U–Pb zircon dating, geochemical and isotopic analyses. The Tarim rhyolites have high A/CNK ratios (= molar Al 2 O 3 /CaO + Na 2 O + K 2 O), Fe # , Ga/Al ratio...
#1Yu-Ting Zhong (CAS: Chinese Academy of Sciences)H-Index: 8
#2Bin He (CAS: Chinese Academy of Sciences)H-Index: 30
Last.Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
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Abstract The age of the Emeishan lavas in SW China remains poorly constrained because the extrusive rocks are (1) thermally overprinted and so represent an open system unsuitable for 40 Ar/ 39 Ar geochronology and (2) in most cases devoid of zircon so that it is impossible for the application of U–Pb geochronology. Existing radiometric age constraints of Emeishan large igneous province are mainly from the application of SIMS and LA-ICP-MS U–Pb techniques to zircons from mafic and felsic intrusio...
#1Bin He (CAS: Chinese Academy of Sciences)H-Index: 30
#2Yu-Ting Zhong (CAS: Chinese Academy of Sciences)H-Index: 8
Last.LIXianhua (CAS: Chinese Academy of Sciences)H-Index: 80
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Abstract Assessment of the synchroneity between the Siberian Traps and the Permo-Triassic boundary (PTB) mass extinction has led to the proposition that the Siberian flood volcanism was responsible for the severest biotic crisis in the Phanerozoic. However, recent studies suggest that the Siberian Traps may have postdated the main extinction horizon. In this paper, we demonstrate, using stratigraphy, a time and intensity coincidence between PTB volcanic ash and the main extinction horizon. Geoch...
#1Yu-Ting Zhong (CAS: Chinese Academy of Sciences)H-Index: 8
#2Bin He (CAS: Chinese Academy of Sciences)H-Index: 30
Last.Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
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Abstract The Guadalupian–Lopingian (G/L) boundary, at a stratigraphically well-documented outcrop in Penglaitan, Guangxi Autonomous Region, South China, has been approved as the Global Stratotype Section and Point (GSSP). Several volcanic ashes or tuffs occur at this boundary, but their mineralogy and geochemistry are not available yet and no reliable age for this boundary has been obtained. A combined study of mineralogy, geochemistry and geochronology has been carried out in this study on six ...
#1Yong-Sheng Kuang (CAS: Chinese Academy of Sciences)H-Index: 4
#2X. H. Wei (CAS: Chinese Academy of Sciences)H-Index: 8
Last.Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
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Abstract While the consensus has been reached as to the lithospheric thinning beneath the North China Craton, the timing of this event remains controversial. Whether it took place during the Early Cretaceous or it extended over a period from late Triassic to early Cenozoic is a matter of hot debate. With aims of contributing to this issue, we performed geochronological and geochemical analyses on basalts of the Laohutai Formation which were emplaced in the Fushun basin at 60–70 Ma. The Laohutai ...
#1Yong-Sheng Kuang (CAS: Chinese Academy of Sciences)H-Index: 4
#2Chong-Jin PangH-Index: 7
Last.Yi-Gang XuH-Index: 55
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The volcanic rocks of the Qingshan Group formed during the destruction of the North China Craton,therefore retaining important information as to the deep processes in this region,40Ar/39Ar dating and geochemical analyses have been carried out on mafic volcanic rocks of the Qingshan Group collected from Jiaodong Peninsula,In combination with previously published data on the silicic rocks of the Qingshan Group,the newly acquired data show that,(1) the mafic volcanic rocks erupted during 122~113Ma,...
#1Bin He (CAS: Chinese Academy of Sciences)H-Index: 30
#2Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
Last.Yu-Ting Zhong (CAS: Chinese Academy of Sciences)H-Index: 8
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We welcome the comments of Ukstins Peate et al. (2011) on our recent paper (He et al., 2010a), which provide us with an opportunity to extend our discussion on paleokarst between theMaokou Formation and theEmeishanbasalts. Ukstins Peate et al. (2011)question the existence of karstic surface of the Maokou limestone described by He et al. (2010a). Instead theycontend that the earliest Emeishanmagmaswereeruptedat, or below, sea level in the center of the Emeishan Large Igneous Province (ELIP), reje...
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