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The precise U-Ph zircon dating of Tianzhushan granites indicates. the emplacement age of the intrusion is127 Ma. It is one part of the Large-scale magmatic emplacement in the extension environment after thecollision betWeen Yangtze Block (YB) and North China Block (NCB), and is belonged to the granitesformed after collision orogens. This large-scale tectonic magma event not only caused the emplacement ofgranitic intrusion and led to intense metamorphism and deformation of the rocks in Dabie area, but alsoplayed a very important role for the Dabie ultrahigh pressure (UHP) metamorphic rocks ultimatelyreturning to the each surface.
The precise U-Ph zircon dating of Tianzhushan granites indicates. The emplacement age of the intrusion is 127 Ma. It is one part of the Large-scale magmatic emplacement in the extension environment after the collision betWeen Yangtze Block (YB) and North China Block (NCB This is a large-scale tectonic magma event not only caused the emplacement of granitic intrusion and led to intense metamorphism and deformation of the rocks in Dabie area, but alsoplayed a very important role for the Dabie ultrahigh pressure (UHP) metamorphic rockery ultimatereturning to the each surface.