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Meditation on Granite Research

DONG Shen-bao,TIAN Wei   

  1. Geological Department, School of Earth and Space Sciences, Peking University, Beijing 100871, China
  • Received:2007-09-20 Revised:2007-09-20 Online:2007-09-20 Published:2007-09-20

Abstract: The granite petrogenesis evidenced as the growth and the recycling of the Earth’s crust has been known as one of the far-reaching problem related to the geodynamics of mantle vs. crust and the geochemistry of the liquid in filtration within the solid state of the Earth as well. During its development, the origin of granite may be accounted as follows:(1)Migmatitic granite vs. magmatic granite. It signifies the beginning era geological observations of the metamorphic origin of granite on the one hand, and the elementary thermodynamic treatment of granite on the other hand. A bitter controversy has been argued nearly about one hundred years.(2)The stage of anatexis. A stage of laboratory experiment modelling the natural melting of crustal rocks into granite has been initiated.(3)The stage of prevailing of the anatexis. It comprises the major and minor elements all over the anatexis in order to verify the consistencies between geological observation, and those of the thermodynamic treatment, in aiming at the interconnection between geological observation, of the natural granite system and that of the thermodynamic system.(4)The origin of granite related to tectonics. It represents a beginning of the advancing stage toward the geodynamic prospective through the role of paragenesis, which is in connection with the thermodynamic principle in order to form a global pattern of granite petrogenesis. Various themes have been proposed and argued to their true aims it attained. Finally, some vital problems concerning the application of equilibrium thermodynamics, the role of fluid in the mechanism of granite petrogenesis, and some problems concerning the origin of granite with respect to tectonics as well as the heat dissipation through secular change have been discussed.