Writers : Ghasemi.A & Puor-Kermani.M
Refference : Geosciences Scientific Quarterly Journal,No.:51-52,P.:18
Publishing Year : 1383

Abstract :
Field and microscopic studies and geochemical analyses suggest that granitoid rocks may be subdivided into three main groups. The first group of granitoid rocks is S-type syn-tectonic granitic gneiss sheets, the second group is I-type volcanic arc granite and granodiorite and the third group is S-type post-collision alkali-granite.
The rocks of Soresat metamorphic complex are different kinds of schist. Andalusite, staurolite, garnet,sillimanite (fibrolite) are the main metamorphic porphyroblasts in these rocks. The protolith of Soresat metamorphic complex are a sequence including shale, siltstone and graywacke with carbonate, arkosic sandstone and pyroclastic intercalations.
A prominent,regionally penetrative foliation(S2)is distinguished in studied area.S2 is generally parallel to meta-sedimentary bedding plane. Thin section studies reveal two discrete detbrmational events. The first deformational event (Dl) is preserved as straight inclusion trails in Pre -S2 Post - SI andalusite, staurolite porphyroblasts. The S2 is generated by the second deformational event. The retrograde metamorphic event follows the second deformational event. The proposed P-T-t path shows a clock-wise path for Soresat metamorphic complex (Pmax=3.7 Kbar, Tmax =6OO°C).
Subject List : Metamorphic