Mesozoic monazite in Neoproterozoic metasediments: Evidence for low-grade metamorphism of Sinian sediments during Triassic continental collision, Liaodong Peninsula, NE China

DOI Web Site Web Site 参考文献33件
  • WAN YUSHENG
    Institute of Geology, Chinese Academy of Geological Sciences Beijing SHRIMP Centre
  • SONG TIANRUI
    Institute of Geology, Chinese Academy of Geological Sciences
  • LIU DUNYI
    Institute of Geology, Chinese Academy of Geological Sciences Beijing SHRIMP Centre
  • YANG TIANNAN
    Institute of Geology, Chinese Academy of Geological Sciences
  • YIN XIAOYAN
    Institute of Geology, Chinese Academy of Geological Sciences Beijing SHRIMP Centre
  • CHEN ZHENYU
    Institute of Mineral Resources, Chinese Academy of Geological Sciences
  • ZHANG QIAODA
    Institute of Geology, Chinese Academy of Geological Sciences Beijing SHRIMP Centre

この論文をさがす

抄録

Sericite phyllite from the Sinian Shisanlitai Formation, Dalian area, Liaodong Peninsula, NE China, contains an assemblage of newly-formed lower-greenschist facies minerals (sericite, chlorite, Fe minerals and Ti minerals) plus aggregates of fine-grained monazite. The texture of the monazite, its mineral inclusions, and its close association with Fe oxide minerals show that it is not detrital or diagenetic, but a product of the low-grade metamorphism. SHRIMP U-Th-Pb dating of the monazite at 217 ± 15 Ma shows that the metamorphism, and associated regional deformation and fluid flow, occurred in the Late Triassic, coeval with the waning stages of the Dabie-Sulu orogeny. The Dabie-Sulu tectonothermal event has produced both deformation and metamorphism in rocks of the eastern North China Block at least up to ∼200 km north of the main continent-continent collision zone.

収録刊行物

参考文献 (33)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ