Geochronology, geochemistry and its tectonic significance of Chahe granites in Hainan Island

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• 作者：Limei Tang (1) (2)
  Hanlin Chen (2)
  Chuanwan Dong (2)
  Fengyou Chu (1)
  
• 关键词：granite ; U ; Pb age dating ; geochemistry ; Hainan Island
• 刊名：Journal of Earth Science
• 出版年：2013
• 出版时间：August 2013
• 年：2013
• 卷：24
• 期：4
• 页码：619-625
• 全文大小：474KB
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• 作者单位：Limei Tang (1) (2)
  Hanlin Chen (2)
  Chuanwan Dong (2)
  Fengyou Chu (1)
  
  1. Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, 310012, China
  2. Department of Earth Sciences, Zhejiang University, Hangzhou, 310027, China
  
• ISSN：1867-111X

文摘

There are very few studies on the granites formed in Late Permian in Hainan () Island. Petrology, geochronology and geochemistry research on Late Permian granites in Chahe () area, Hainan Island will be reported in this article. The results show that, Chahe granites formed in 251 Ma, are riched in SiO2, alkali, Fe2O3 while depleted in MgO and CaO, with low Sr and high Yb, and have all the features consistent with A-type granite. The forming of Chahe granites may suggest that Hainan Island was already in post-orogenic setting in Late Permian.