Earth Science Frontiers ›› 2007, Vol. 14 ›› Issue (6): 40-48.

• Article • Previous Articles     Next Articles

Rotation of crustal blocks as an explanation of Oligo-Miocene extension in Southeastern Tibet—evidenced by the Diancangshan and nearby metamorphic core complexes

  

  • Online:2008-06-30 Published:2008-06-30

Abstract:

The Diancangshan (DCS) metamorphic core complex (mcc) along the Red River Fault Zone (RRFZ) is an incomplete mcc composed of two units with distinct characteristics, i.e. a lower plate of amphibolite grade tectonites intruded by synkinematic monzogranite, and a greenschist grade detachment fault zone. Lower plate rocks possess high temperature (high-T) structures and L or LS mylonites with left-lateral strike-slip shear sense. The detachment fault zone is a low temperature (low-T) shear zone with top to th...

Key words:

Diancangshan of western Yunnan, metamorphic core complex, rotation of crustal blocks, extension, the Red River fault zone