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Yongfeng Zhu
Peking University
69Publications
18H-index
1,073Citations
Publications 69
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#1Wanyi Feng (PKU: Peking University)
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Abstract Determining the processes of magma ascent from magma source to the surface is paramount to understand the evolution of magmatic plumbing systems. Here, we perform systematic petrological investigations and thermodynamic modelling on the early Carboniferous calc-alkaline basalt in the Xinyuan region of western Tianshan. As the most common phenocryst in basalt, clinopyroxene with diverse textures and zoning patterns can be classified into 6 types. Type 1 clinopyroxene, occurring throughou...
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#1Wanyi Feng (PKU: Peking University)H-Index: 1
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Abstract The widespread late Carboniferous calc-alkaline and shoshonitic magmatic rocks in the Awulale mountain provide crucial constraints on the tectonic evolution of the western Tianshan. Here, we perform detailed petrological investigations as well as zircon U-Pb chronological, whole-rock geochemical and Sr-Nd isotopic analyses on these magmatic rocks from two geological sections along the Duku road. Magmatic rocks in the section I with zircon SHRIMP U-Pb ages of 306.8 Ma and 306.4 Ma are co...
1 CitationsSource
#1Jiuyang Jiang (PKU: Peking University)H-Index: 2
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Abstract This paper reports detailed studies on harzburgite and serpentinite in the Hegenshan ophiolitic melange. Harzburgite consists mainly of olivine and orthopyroxene with trace amounts of clinopyroxene and chromian spinel. Clinopyroxene occurs as isolated crystals or in the intergrowth of chromian spinel–clinopyroxene–orthopyroxene. Harzburgite is moderately to highly depleted, displaying high Fo contents in olivine (90.8–92.2), moderate Al 2 O 3 contents in orthopyroxene (1.59–2.79 wt%), l...
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#1Qingmin Zhu (PKU: Peking University)
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Abstract Complex assemblages consisting of native iron + pentlandite, pentlandite + heazlewoodite + magnetite, heazlewoodite + magnetite + platinum-group minerals (PGM), and millerite ± heazlewoodite are associated with three types of altered chromites (partly altered chromite, double-rimmed chromite, and porous chromite) discovered in the Sartohay podiform chromitite hosted by the Sartohay ophiolitic melange in west Junggar of China. We propose a two-stage genetic model to explain the chromite ...
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#1Huichao Zhang (PKU: Peking University)H-Index: 4
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Abstract The Gezigou gold deposit, which is located in west Junggar (Xinjiang, China), is mainly hosted in graphite-bearing siltstone. These ore bodies, which consist of gold-bearing hydrothermal veins and mineralized siltstone with disseminated sulfides, formed in three stages: quartz-sulfides-native gold (I), arsenopyrite-calcite-native gold (II), and quartz-calcite (III) stages. The microthermometric and laser Raman spectroscopic analysis of the fluid inclusions in stage I-quartz demonstrate ...
1 CitationsSource
#1Shaoni Wei (PKU: Peking University)H-Index: 2
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Last.Wanyi Feng (PKU: Peking University)H-Index: 3
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Abstract The ore-forming processes in the Baogutu porphyry copper deposit are spatially and temporally related to the Late Carboniferous intrusions in the west Junggar of China. The mineralized intrusions, consisting of granodiorite, quartz diorite, and diorite, are characterized by moderate zircon Ce 4+ /Ce 3+ ratios (15.9 – 163) and Eu/Eu * ratios (0.25 – 0.57; Eu/Eu * = Eu N /(Sm N ×Gd N ) 1/2 ). Estimated magmatic oxidation state based on amphibole crystallized in the deep magma chamber (log...
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#1Ruihua Li (PKU: Peking University)
#2Hegen Ouyang (CAS: Chinese Academy of Sciences)
Last.Yongfeng Zhu (PKU: Peking University)H-Index: 18
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Abstract The Pamir and Tibetan plateaus, which have a similar terrane structure and evolutionary history since the Phanerozoic, are both host abundant Eocene to Miocene intrusions, however, unlike the Tibetan plateau, coeval porphyry deposits appear to be devoid in the Pamir plateau. In this study, we first report a potentially economic Cu-bearing sulfide mineralization at Siruyidie’er prospect in the Central Pamir. The Siruyidie’er prospect is characterized by the development of 14 breccia pipe...
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#1Huichao Zhang (PKU: Peking University)H-Index: 4
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Geological characteristics and geochemical analyses are reported for the early Carboniferous pillow basalt in the Huilvshan region (west Junggar, Northwest China), with the aim to indicate its petrogenesis, magma source characteristics, and tectonic implication. This pillow basalt consists of clinopyroxene and plagioclase with trace amounts of magnetite, apatite, and chromian spinel. It is tholeiitic in composition with low concentrations of Na2O + K2O (1.52–4.74 wt.%). Similar to the N-MORB, th...
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#1Wanyi Feng (PKU: Peking University)H-Index: 3
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Abstract The volcanic rocks, consisting of basalt, basaltic andesite, andesite, and tuff with volcanic clastic sedimentary rocks in the Dahalajunshan region represent an early Carboniferous continental arc formed during subduction of the Paleo-southern Tianshan ocean. The basalt is characterized by a phenocryst assemblage of clinopyroxene and plagioclase, while basaltic andesite and andesite contain variable amounts of clinopyroxene, orthopyroxene, plagioclase, and Fe Ti oxides phenocrysts. Clin...
2 CitationsSource
#1Jiuyang Jiang (PKU: Peking University)H-Index: 2
#2Yongfeng Zhu (PKU: Peking University)H-Index: 18
Abstract The Baobei pluton in west Junggar, composed of an earlier pyroxene-bearing granitoid and a variety of later pyroxene-absent hornblende–biotite-bearing granitoids (quartz diorite, granodiorite, monzogranite), intrudes early Carboniferous volcano–sedimentary rocks. Zircons separated from the granodiorite provide a U–Pb age of 306.5 ± 2.6 Ma, which represents the age of magma emplacement. The pyroxene-bearing granitoid is porphyritic with phenocrysts of orthopyroxene and plagioclase. Two t...
2 CitationsSource
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