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Yi-Gang Xu
Chinese Academy of Sciences
GeologyCratonBasaltGeochemistryMantle (geology)
216Publications
55H-index
9,869Citations
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Publications 231
Newest
#1He Wang (CAS: Chinese Academy of Sciences)H-Index: 8
#1He WangH-Index: 6
Last. Pei LiH-Index: 3
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Abstract The Bailongshan pegmatite deposit is a newly discovered super-large Li–Rb–(Be–Ta–Nb) rare-metal deposit in the West Kunlun orogenic belt, northwest China. Fifty-two rare-metal orebodies (50–1230 m long by 1.5–157 m wide) have been discovered by detailed field surveying, making up a metallogenic field that is larger than 8250 × 400 m. The deposit is estimated to have ore reserves of more than 5.06 million tonnes (t) Li2O, 160,020 t BeO, 316,200 t Rb2O, 40,060 t Nb2O5, and 10,750 t Ta2O5....
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#1Lu-Bing Hong (CAS: Chinese Academy of Sciences)H-Index: 8
#2Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
Last. Yongsheng Kuang (Inner Mongolia University of Technology)
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Abstract Despite the critical influence of oxidation state on the geochemical and geodynamic evolution of Earth, its impact on the longevity of cratons is poorly understood. To address this issue, we investigated the redox state of the Late Mesozoic subcontinental lithospheric mantle (SCLM) beneath the eastern North China Craton (NCC), which was destroyed during the Phanerozoic. We report the occurrence of high-Fo olivine (Fo > 87, where Fo = atomic Mg/(Mg + Fe2+)) within Early Cretaceous basalt...
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#1Man Wang (CAS: Chinese Academy of Sciences)
#2Yu-Ting Zhong (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 The Wuda Tuff Flora in the North China Craton (NCC) is a “vegetational Pompeii” and one of the most completely preserved marsh ecosystems of the late Paleozoic Northern Hemisphere. However, the precise age, geochemistry, and petrogenesis of the thick tuff containing this peat-forming flora have not been established. We conducted a comprehensive petrographic, mineralogical, whole-rock geochemical, and zircon U Pb and Hf O isotopic investigation of five samples from a vertical section thr...
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#1Zhao Liu (CAS: Chinese Academy of Sciences)H-Index: 1
#2Laixi Tong (Northwest University (United States))H-Index: 1
Last. Chao Li (CAS: Chinese Academy of Sciences)H-Index: 1
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Abstract Mafic granulites occur as massive lenses within host paragneisses at Wuqiagou area in the southern Chinese Altay orogen. They comprise a suite of fine–grained and coarse–grained mafic granulites, both characterized by an assemblage of orthopyroxene, clinopyroxene, hornblende, biotite, plagioclase, quartz, Fe–Ti oxides, minor K–feldspar, and accessary apatite and zircon. The peak– and post–peak metamorphism evolution is respectively represented by orthopyroxene–clinopyroxene–bearing asse...
1 CitationsSource
#1Zhao Liu (CAS: Chinese Academy of Sciences)H-Index: 1
#2Omar Bartoli (UNIPD: University of Padua)H-Index: 13
Last. Chao Li (CAS: Chinese Academy of Sciences)H-Index: 2
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Abstract Pelitic granulites from the southern Chinese Altai record a prominent Permian high–temperature reworking event. The lack of solid constraints on anatexis and metamorphic P–T path of these rocks has hindered our understanding of the thermo–tectonic history of Chinese Altai orogen. Here, we present a detailed field and petrological study of the pelitic granulites cropping out at Wuqiagou area, Fuyun county. They occur as lenses or interlayers hosted within biotite–plagioclase gneisses, wi...
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#1Yu-Ting Zhong (CAS: Chinese Academy of Sciences)H-Index: 8
#2Roland Mundil (Berkeley Geochronology Center)H-Index: 30
Last. Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
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2 CitationsSource
#1Yizhuo Sun (CAS: Chinese Academy of Sciences)
#2Saswata Hier-Majumder (RHUL: Royal Holloway, University of London)H-Index: 15
Last. Michael J. Walter (CIS: Carnegie Institution for Science)H-Index: 37
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Abstract We present a theoretical model of the stability and migration of carbonate-rich melts to test whether they can explain seismic low-velocity layers (LVLs) observed above stalled slabs in several convergent tectonic settings. The LVLs, located atop the mantle transition zone, contain small (∼1 vol%) amounts of partial melt, possibly derived from melting of subducted carbonate-bearing oceanic crust. Petrological and geochemical evidence from inclusions in superdeep diamonds supports the ex...
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#1Zhao Liu (CAS: Chinese Academy of Sciences)H-Index: 1
#2Omar Bartoli (UNIPD: University of Padua)H-Index: 13
Last. Xiao-Long HuangYaoling (CAS: Chinese Academy of Sciences)H-Index: 30
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Abstract The Chinese Altai orogen formed in the Paleozoic is an important part of the Central Asian Orogenic Belt (CAOB), and the study on the metamorphism will provide novel and robust constraints on its tectonic evolution. In this study, we investigate our newly recognized garnet–orthopyroxene–cordierite granulites at Wuqiagou area in the southern Chinese Altai. Detailed petrographic study and P–T estimates suggest four distinct metamorphic stages of mineral assemblages: (1) pre–peak (M1) stag...
3 CitationsSource
#1Wei Wu (CAS: Chinese Academy of Sciences)
#2Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
Last. Xin Li (CAS: Chinese Academy of Sciences)H-Index: 26
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Abstract Calcium isotopes have the potential to explore genetic links between the Moon and Earth. Here, we constrain calcium isotopic composition of the bulk silicate Moon (BSM), using petrological, geochemical and calcium isotopic data obtained from five lunar meteorites (two basalts and three feldspathic breccia rocks), and on four anorthite crystals from two feldspathic breccia meteorites. The δ44/40Ca of lunar feldspathic breccias are 0.76 ± 0.06‰ (2SD, n=3), 0.78 ± 0.10‰ (2SD, n=6) and 0.82...
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#1Hai-Quan Liu (CAS: Chinese Academy of Sciences)H-Index: 6
#2Graciano P. Yumul (UPLB: University of the Philippines Los Baños)H-Index: 2
Last. Valerie Shayne V. Olfindo (UP: University of the Philippines)H-Index: 1
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