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J4 ›› 2010, Vol. 16 ›› Issue (4): 413-425.

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Comparison of Protolith Assemblages of Metamorphic Rocks in  the Dabie-Sulu Orogen and the Late Mesozoic Magmatic Rock Associations  in the Coastal Region of Zhejiang and Fujian Provinces: Implications for theNeoproterozoic Tectonic Setting of Northeastern Yangtze Block

QIU Jian-sheng, HU Jian, LI Zhen, LIU Liang   

  1. School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China
  • Received:2010-08-06 Revised:2010-09-17 Online:2010-12-20 Published:2010-12-20


      The Dabie-Sulu orogenic belt is tectonically situated in the northeastern margin of the Yangtze Block. This belt is mostly underlain by granitic gneisses (over 80%), and minor eclogites occur as pods or layers within them. The protoliths of the granitic gneisses and eclogites correspond to acidic and basic igneous rocks, respectively, and both of them are of Neoproterozoic ages. In this paper, the protolith assemblages and geochemical characteristics of these metamorphic rocks are systematically compared with those of the Late Mesozoic igneous rock associations in the coastal area of Zhejiang and Fujian Provinces.

Key words: magmatic rock association;tectonic setting;Dabie-Sulu orogen;coastal area of Fujian and Zhejiang Provinces;Neoproterozoic;Late Mesozoic

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