Repeated modification of lithospheric mantle in the eastern North China Craton: Constraints from SHRIMP zircon U-Pb dating of dunite xenoliths in western Shandong
作者: DeBin YangWenLiang XuShan GaoYiGang XuFuPing Pei
作者单位: 1College of Earth Sciences, Jilin University
2CAS Key Laboratory of Isotopic Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
3State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences
刊名: Chinese Science Bulletin, 2012, Vol.57 (6), pp.651-659
来源数据库: Springer Nature Journal
DOI: 10.1007/s11434-011-4852-x
关键词: duniteSHRIMP zircon datinglithospheric mantlemultiple modificationNorth China Craton
英文摘要: Abstract(#br)Four dunite xenoliths from the Tietonggou intrusion of western Shandong, China, were subjected to SHRIMP zircon U-Pb dating to constrain timing of the North China Craton (NCC) destruction, a topic of much controversy. Cathodoluminescence images revealed that 15 of the 18 zircon grains from the xenoliths display striped absorption. The rest showed oscillatory growth zoniation. All the zircons had variable contents of Th (49–3569 ppm; average, 885 ppm) and U (184–5398 ppm; average, 1277 ppm), and variable Th/U ratios (0.15–2.04). These zircon characteristics indicate a magmatic origin. The zircon age data can be divided into five groups: 131–145, 151–164, 261–280, 434–452, and 500–516 Ma. Group I (131–145 Ma) is consistent with timing of formation of the Tietonggou high-Mg...
全文获取路径: Springer Nature  (合作)
影响因子:1.319 (2012)

  • dating 年代测定
  • zircon 锆石
  • dunite 纯橄家
  • mantle 地幔
  • western 谓的
  • modification 诱发变异
  • eastern 东方的
  • China 中国