پترولوژی و ریزتکتونیک مجموعه های دگرگونی شمال و شرق بلورد، منطقه سیرجان

abstract the balvard metamorphic assemblage (bma) crops out at the northeastern margin of the southeastern part of the sanandaj-sirjan zone (ssz) in contacting to the dehshir-baft ophiolitic mélange. this location prepared a special situation to resolve some of the complicated tectonic problems of this part of iran. petrology, micro-tectonics and satellite image investigation were carried out to find the origin and metamorphic conditions of the bma. this metamorphic assemblage with a probable age of late paleozoic-jurassic can be subdivided into two metamorphic complexes of zard kuh and hossein abad-e-sooch, have been studied and sampled along the three ne-trending geological cross sections. the findings of the current study support the previous researches that express the existence of various rocks such as metapsammite, marble, calc-silicate, metabasite, and rarely metapelite which were experienced both the greenschist and amphibolite facieses. moreover, we have shown the presence of a gneissic dome with deep crustal origin has been appeared under the disturbed, low-grade metamorphic rocks. what is more is the exploration of the thin-skinned granitic thrust sheets confirms the presence of thrusts transported the mylonitic granites from east to west.