DEVELOPMENT OF MYLONITIC SHEAR ZONE WITHIN MILLAS GRANITE (EASTERN PYRENEES) - EVIDENCE OF DUCTILE VARISCAN OR PYRENEAN DEFORMATION

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SOLIVA, J
PISTRE, S
ARTHAUD, F
BRUNEL, M
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O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
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07 ; 0710 ; 09 ;
摘要
Reverse mylonitic shear zone have been evidenced at the southern border of the Millas granitic pluton. Ductile deformation is characterized by East-West trending, steep south dipping mylonitic bands which are several hundred metres thick. Reverse faulting kinematics is consistent with the main compressive stress-field trajectories (sigma-1) determined by brittle microstructures analysis. This ductile deformation is proposed to be the result of the Hercynian and/or Pyrenean shortening.
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页码:611 / 618
页数:8
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