Alireza Almasi

Lorestan University · Department of Geology

The Quchan fault is located in Quchan - Shirvan area which is a part of Chenaran- Bojnourd plain in Kopeh-Dagh zone, NE Iran. The Quchan active fault with northwest – southeast trending is one of the most important strike-slip faults in the area which its activity led to the numerous historical and instrumental earthquakes. The Neo-tectonic activit...

13 The mafic to felsic intrusive rocks of Nay (briefly IRN) is located in the northeast of 14 central Iranian block. Here, we present new major and trace element geochemistry, U-15 Pb zircon ages and Sr-Nd isotopic data to discuss the origin of the IRN post collisional 16 units. The oldest units in the Nay area belong to Paleocene-early Eocene volc...

The Abuzar hypabyssal granitoids, as a part of magmatic arc of the northern Sabzevar ophiolitic belt, is located 82 km northwest of Sabzevar. These units as dyke and stock with the dominantly porphyritic textures, intruded into the Cretaceous-Eocene volcano-sedimentary succession and are characterized as metaluminous and calcalkaline and intermedia...

Quantitative microstructural investigations involving finite strain and vorticity analyses of quartz-rich mylonites provide significant information regarding the kinematic characteristics of the Samen shear zone (SSZ) within the Sanandaj–Sirjan Metamorphic Belt, Zagros Mountain of Iran. A dominant top-to-the-SE sense shear in the study area is reco...

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