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Jun-Hong Zhao
China University of Geosciences
63Publications
23H-index
2,241Citations
Publications 63
Newest
#1Si-Fang Huang (China University of Geosciences)H-Index: 1
#2Wei Wang (China University of Geosciences)H-Index: 42
Last.Er-Kun Xue (China University of Geosciences)H-Index: 1
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ABSTRACT The Neoproterozoic Jiangnan Orogenic Belt in south China was formed by the amalgamation of the Yangtze and Cathaysia blocks, however, the timing of its formation is still debated. In this study, we present whole rock geochemistry, U-Pb zircon ages, Lu-Hf and Nd-isotope systematics on the Neoproterozoic Yexijiang and Baomuping granites occurring in the western segment of the Jiangnan Orogenic Belt. These granites mark the initiation of post-collision extension environment. Zircon U-Pb ag...
1 CitationsSource
#1Hang Liu (China University of Geosciences)
#2Jun-Hong Zhao (China University of Geosciences)H-Index: 23
Abstract The Neoproterozoic magmatism in South China may have been related to assembly and breakup of the supercontinent Rodinia. The ca. 815-Ma mafic intrusions in the Dahongshan region at the northern Yangtze Block are composed of fine- to medium-grained gabbro and diabase, which show variable major and trace element compositions with (La/Yb) N ratios of 0.53–3.43. The mafic rocks also have large ranges of initial 87 Sr/ 86 Sr ratios (0.70318–0.70810), ƐNd values (−2.8 to +4.3) and Pb isotopes...
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#1Ming Chen (China University of Geosciences)H-Index: 8
#2Min Sun (HKU: University of Hong Kong)H-Index: 93
Last.Anna V. Kulikova (Kazan: Kazan Federal University)H-Index: 4
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Abstract Devonian intermediate-felsic igneous rocks are widespread in the Gorny Altai terrane and they were suggested to form in a continental arc setting that was built on the late Neoproterozoic to early Ordovician Kuznetsk-Altaiintra-oceanicsubduction-accretion system (KAIOSS). 1 Petrogenesis of these rocks will not only provide information on geodynamic mechanisms for continental arc magmatism but also shed light on how accretionary orogens can be differentiated and matured, both of which ar...
1 CitationsSource
#1Wei Wang (Monash University)H-Index: 42
#2Peter A. Cawood (Monash University)H-Index: 70
Last.Jun-Hong ZhaoH-Index: 23
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Source
#1Jun-Hong Zhao (China University of Geosciences)H-Index: 23
#2Mei-Fu Zhou (China University of Geosciences)H-Index: 71
Last.Wei Wang (China University of Geosciences)H-Index: 42
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Subduction of oceanic slabs can physically and chemically modify mantle wedges, but how mantle wedges are temporally evolved is difficult to be constrained. In this study, we use in situ zircon U–Pb ages and Hf–O isotopes of mafic intrusions to examine a coupled evolution of magmas and mantle sources above a subduction zone. Neoproterozoic mafic intrusions in the western margin of the Yangtze Block are mostly composed of gabbros that were formed in an arc system during 870–750 Ma followed by gen...
2 CitationsSource
#1Yuping Su (China University of Geosciences)H-Index: 12
#2Jianping Zheng (China University of Geosciences)H-Index: 34
Last.Jian Wang (China University of Geosciences)H-Index: 1
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1 CitationsSource
#1Qiong Chen (Tongji University)H-Index: 5
#2Min Sun (HKU: University of Hong Kong)H-Index: 93
Last.Jun Wang (HKU: University of Hong Kong)H-Index: 7
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Abstract The Yudongzi terrane is featured by well-preserved lithologic outcrops of basement rocks, including the ~2.7 Ga tonalite-trondhjemite-granodiorite (TTGs), ~2.5 Ga potassic granites, Neoarchean supracrustal rocks and ~1.85 Ga amphibolites. The TTG rocks contain ~2.8 Ga inherited/xenocrystic zircons, which indicates the existence of ancient rocks in the magma source. Most zircon grains in the TTG rocks have chondrite-like Hf isotopic compositions, indicative of derivation of magmas from t...
6 CitationsSource
#1Qi-Wei Li (China University of Geosciences)H-Index: 2
#2Jun-Hong Zhao (China University of Geosciences)H-Index: 23
Last.Wei Wang (China University of Geosciences)H-Index: 42
view all 3 authors...
Abstract Paleoproterozoic mafic dikes from the Kongling Complex in South China provide an ideal opportunity to examine mantle properties and tectonic evolution of the Yangtze Block and thus to understand the paleo-position of South China in the Columbia supercontinent. The 2.0 Ga dikes are the oldest mafic intrusions identified in the Yangtze Block by far. Samples from the dikes consist of fine to medium-grained dolerite and have variable SiO2 (43.48–52.61 wt%) and MgO contents (3.17–7.35 wt%). ...
2 CitationsSource
#1Jun-Hong Zhao (China University of Geosciences)H-Index: 23
#2Qi-Wei Li (China University of Geosciences)H-Index: 2
Last.Wei Wang (China University of Geosciences)H-Index: 42
view all 4 authors...
Abstract The South China Craton consists of the Yangtze and Cathaysia blocks that were welded together along the Jiangnan Fold Belt in the Neoproterozoic. The Neoproterozoic magmatism in the western and northern margins of the Yangtze Block is characterized by voluminous volcano-sedimentary strata, numerous felsic intrusions and many mafic-ultramafic plutons which provide a good opportunity to examine the geodynamics and tectonic evolution of the South China Craton during the assembly and breaku...
15 CitationsSource
#1Shou-Dong Wei (China University of Geosciences)H-Index: 1
#2Hang Liu (China University of Geosciences)H-Index: 2
Last.Jun-Hong Zhao (China University of Geosciences)H-Index: 23
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Abstract The Jiangnan Orogen in South China formed through collision between the Yangtze and Cathaysia blocks during the Neoproterozoic. The Fanjingshan Group, located in the western part of the Jiangnan Orogen, consists of the deformed volcano-sedimentary sequences intruded by the ca. 830 Ma S-type granites. The volcanic rocks are mainly composed of rhyolitic tuffs associated with minor basalts. The basalts are rich in LILEs (e.g. Th and U) and LREEs and depleted in HFSEs (e.g. Nb and Ta), and ...
3 CitationsSource
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