Metamorphosed mafic rocks with N-type MORB geochemical features in Hainan Island—Remnants of the Paleo-Tethys Oceanic Crust?
作者: Xianhua LiHanwen ZhouShijiang DingChi-Yu LeeRenjie ZhangYeming ZhangWenchun Ge
作者单位: 1Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
2Hainan Geological Survey
3Department of Geology, Taiwan University
4Yichang Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences
刊名: Chinese Science Bulletin, 2000, Vol.45 (10), pp.956-960
来源数据库: Springer Nature Journal
DOI: 10.1007/BF02886208
关键词: N-type MORBmetamorphosed mafic rockselement geochemistryHainan Island
英文摘要: Abstract(#br)A number of metamorphosed mafic rocks occurred within the Paleozoic strata in the Chenxing and Bangxi regions at the northern side of the Changjiang-Qionghai Fault in Central Hainan Island. These metamorphosed mafic rocks are tholeiites in chemistry. They are characterized by extreme depletion of Th, Nb, Ta and LREEs, resembling the depleted N-type mid-ocean ridge basalts (MORB). Field relations suggest that the protolith of the metamorphosed mafic rocks were likely formed in Paleozoic. These metamorphosed mafic rocks with N-type MORB geochemical features were probably the remnants of the Paleo-Tethys oceanic crust.
全文获取路径: Springer Nature  (合作)
影响因子:1.319 (2012)

  • mafic 镁铁质的
  • geochemical 地球化学的
  • Tethys 特堤斯星
  • features 特征