Weidong Sun
Chinese Academy of Sciences
What is this?
Publications 296
#1Jiancheng Xie (Hefei University of Technology)H-Index: 7
#2Dawei Tang (Hefei University of Technology)H-Index: 1
Last. Weidong Sun (CAS: Chinese Academy of Sciences)H-Index: 48
view all 5 authors...
Abstract In situ elemental compositions of sulfide minerals have been widely applied to trace ore-forming processes of magmatic-hydrothermal ore systems, yet the application of elemental compositions of the sulfide minerals in skarn ore deposits is still restricted by the lack of understanding of their behaviors during the skarn formation processes. In this study, in situ (LA-ICP-MS and EPMA) elemental compositions of medium- to coarse-grained euhedral pyrite and xenomorphic granular chalcopyrit...
#1Renqiang Liao (CAS: Chinese Academy of Sciences)
#2Hongli Zhu (CAS: Chinese Academy of Sciences)H-Index: 4
Last. Weidong Sun (CAS: Chinese Academy of Sciences)H-Index: 48
view all 8 authors...
Abstract Zinc isotopes are a new tracer for deep materials recycling. However, its behavior during plate subduction remains obscure. To address this issue, here we present high precision Zn isotopic compositions (δ66Zn) of basalts recovered from International Ocean Discovery Program (IODP) Expedition 349 in the South China Sea (SCS), which have been influenced by various amounts of subducted materials. Based on (La/Sm)N values, these basalts are classified into N-MORB ((La/Sm)N The lack of corre...
#1Jinlong Liang (CDUT: Chengdu University of Technology)H-Index: 7
#2Jie Li (CAS: Chinese Academy of Sciences)H-Index: 19
Last. Jianzhong Li (CDUT: Chengdu University of Technology)H-Index: 1
view all 9 authors...
Abstract This study employed high-sensitivity and high-resolution secondary ionizing mass spectrometry (NanoSIMS) to determine the distribution of Au, As, Cu, Se, and S isotopes of pyrite from the Shuiyindong Au deposit, southwestern China. NanoSIMS maps show that Au occurs as solid solution, and heterogeneously distributes at micron scale in the ore pyrite, which is the overgrowth of the preexisting synsedimentary or hydrothermal pyrite core, commonly rimmed again by the As- and Au-poor outermo...
#1Hong-Li Zhu (CAS: Chinese Academy of Sciences)H-Index: 1
#1Hongli ZhuH-Index: 4
Last. Zhaofeng ZhangH-Index: 16
view all 9 authors...
Abstract Calcium isotopes can potentially be used to trace many geological processes. Characterizing the Ca isotopic compositions of marine sediments is a precondition for using Ca isotopes to trace the recycling of marine sediments into the mantle and mantle-derived rocks. The best way to achieve this goal is to investigate different types of marine sediments that are adjacent to subduction zones and would undergo subduction in the future. Here, we present high-precision Ca isotopic data for ma...
#1Jiancheng XieH-Index: 7
#2Likai GeH-Index: 1
Last. Weidong SunH-Index: 48
view all 8 authors...
Abstract Stratabound massive sulfide deposits are widely distributed along Middle-Lower Yangtze River metallogenic belt, in eastern China. There has much debate as to whether these deposits were associated with Late Mesozoic igneous or Carboniferous sedimentary exhalative (SEDEX). Three-type pyrites, i.e., colloform (Py1), fine-grained (Py2) and medium- to coarse-grained (Py3), from Xinqiao and Taoyuan stratabound massive sulfide deposits in Tongling region were investigated using electron probe...
1 CitationsSource
#1Yuxiao Chen (PKU: Peking University)
#2Ying Cui (PKU: Peking University)
Last. Tangfu Xiao (GU: Guangzhou University)
view all 6 authors...
Granitoids in active continental margins are probes of sub-arc magmatic processes and are crucial for the understanding of crust–mantle interaction during subduction. Here we report data for the mi...
#1Shuo XueH-Index: 2
#2Ming-Xing Ling (CUTe: China University of Technology)
Last. Weidong SunH-Index: 48
view all 7 authors...
Abstract Carbonatitic magmatism plays a significant role in outgassing carbon from mantle and the formation of rare earth element (REE), rare metal (e.g., Nb and Th) and other types of deposits. The mechanism of REE mineralization associated with carbonatite have been widely studied. However, it is hard to understand U-Nb mineralization without Th enrichment associated with carbonatite. Here we report a carbonatite-hosted U-Nb deposit in Huayangchuan, located in the north Qinling Orogenic Belt. ...
#1Xin Zhang (CAS: Chinese Academy of Sciences)H-Index: 33
#1Xin Zhang (CAS: Chinese Academy of Sciences)H-Index: 14
Last. Jun Yan (CAS: Chinese Academy of Sciences)H-Index: 21
view all 11 authors...
Abstract Supercritical CO2 appearing as bubbles in hydrothermal vents was identified in the south part of the Okinawa Trough using in situ Raman spectroscopy. Significantly, the N2 peak in supercritical CO2 is much larger than those in seawater and vent fluids, indicating that supercritical CO2 enriches N2 from the surrounding environment. Considering that the partial pressures of CO2 and N2 in the Earth’s proto-atmosphere were ∼ 10-20 MPa, supercritical CO2 with high N2 was likely the dominant ...
#1He Liu (CAS: Chinese Academy of Sciences)
#2Weidong Sun (CAS: Chinese Academy of Sciences)H-Index: 48
Last. Jianghong Deng (CAS: Chinese Academy of Sciences)
view all 3 authors...
Abstract The Archean plate tectonics and subduction-related magmatism have been concerned for several decades. Here we investigate the Archean plate subduction from a new perspective, using the secular records of global-scale non-TTG (tonalite-trondhjemite-granodiorite) felsic rocks with arc-like geochemical affinities. The statistical results show that the La/Yb and Sm/Yb of non-TTG arc felsic rocks evolved at high values in the Archean, and decreased sharply at 2.5 Ga. This abrupt transition i...
#1Hongli Zhu (CAS: Chinese Academy of Sciences)H-Index: 4
#2Long Du (SDUST: Shandong University of Science and Technology)H-Index: 1
Last. Weidong SunH-Index: 48
view all 5 authors...
Abstract Subduction related metasomatism has been proposed to be one of the most important processes that may cause Ca isotopic heterogeneities in the mantle. Back-arc basin basalts (BABBs) affected by different contributions of subducted materials have various geochemical compositions ranging from MORB-like to arc-like, so that they are ideal media to investigate the behavior of Ca isotopes during plate subduction. Here we report Ca isotopic compositions of a series of BABBs from the Lau Basin,...
3 CitationsSource