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Chinese Journal of Geochemistry

, Volume 13, Issue 3, pp 236–245 | Cite as

Ductile thrusting-shearing genesis of Hongzhen granitoid, Anhui Province

  • Zhang Kaijun
  • Huang Zhongjin
  • Shi Yangshen
  • Wang Liangshu
  • R. C. Brewer
  • Qiao Nieguang
Article
  • 28 Downloads

Abstract

As view from the petrological, mineralogical and petrochemical studies, the Hongzhen granitoid is characterized by the autochthonous-parautochthonous transformation. The source rocks are mainly felsic clastic sediments with a small amount of intermediate magmatite in the Zhangbaling Group. The granitoid is covered by mylonite and migmatite, and the three rocks share much in common with respect to their REE distribution patterns and the W-type distribution of transition elements, indicating that they all came from identical source rocks. The granitoid belongs to collision granites or postorogenic granitoids resulting from ductile thrusting-shearing under 550 °C and 7 × 108 Pa conditions in the foreland of the Yangtze plate during the Late Indosinian movement, and from metasomatism plus partial melting.

Key words

granitoid mylonite migmatite thrusting-shearing Hongzhen area 

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Copyright information

© Institute of Geochemistry, Chinese Academy of Sciences 1994

Authors and Affiliations

  • Zhang Kaijun
    • 1
  • Huang Zhongjin
    • 1
  • Shi Yangshen
    • 1
  • Wang Liangshu
    • 1
  • R. C. Brewer
    • 2
  • Qiao Nieguang
    • 3
  1. 1.Department of Earth SciencesNanjing UniversityNanjing
  2. 2.Department of GeologyUniversity of AlabamaTuscaloosaUSA
  3. 3.Geological Team 326 of Geological Bureau of Anhui ProvinceAnqing

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