تحلیل ساختاری رگه‌های پوششی (en-echelon) و برگوارگیهای حاصل از انحلال در پهنه برشی کولی کوش

Kowlikosh shear zone is part of the Sanandaj-Sirjan metamorphic belt, which have been affected by brittle-ductile and ductile deformation.

Structural and geometrical analysis show that the first generation of en-echelon arrays has been rotated relative to second generation of en-echelon arrays. This indicates that like any material line rotated after principle incremental strain axes (ISA) oriented. En-echelon arrays formed in non-coaxial inhomogeneous simple shear deformation. With respect to the orientation of en-echelon veins and foliations result of solution determined the principle trend of incremental strain axes that correspond whit general trend of Zagros thrust and Sanandaj-Sirjan zone.

Formations of these structures are due to two phases of deformation:

-En-echelon arrays have been formed during Alpine orogenic movement.

-Foliations result of solution has been formed during Late Triassic orogenic movement