Mahdi Behyari

Urmia University · Department of Geology

Shear zone development in the Zagros orogenic belt is a result of the oblique collision of the Arabian plate with the Iranian plateau. To distinguish areas deformed during the collisional phase from those deformed by post-collisional events, the coaxiality of deformation and the shape of the strain ellipsoid (SES) have been analyzed. The variation...

Post Eocene silica vein emplacement at a brittle shear zone in NW Iran is associated with Au, Cu and Mo mineralization. The orientation and abundance of veins are dominantly controlled by the fault and fracture pattern. Within this context, we have analyze the spatial and geometrical properties of the faults and fractures affecting vein emplacement...

The Misho complex in Northwest Iran is a prominent topographic massif bounded by well known active faults. Our new structural analysis of this area indicates that faulting has important role in the exhumation of this complex. The conjugate orientation of the North and South Misho Faults caused uplift in the Misho and exhumation of the Precambrian c...

The Salmas geothermal field is located in NW Iran. Subduction of Neo‐Tethys oceanic crust beneath the Iranian microcontinent caused to propagation of the magmatic‐Arc. Fractures and faults in the convergent zone have created path‐ways for the circulation of geothermal fluid. Fracture concentration in the Salmas geothermal field has been characteriz...

Ophiolite is a remnant part of oceanic crust and consist of the upper mantle and lower crust rock units. The transition from mantel to crust coincides with Moho discontinuity. Ophiolite rocks host valuable minerals for this discrimination of different parts of this unit is important. In the Khoy region for discrimination of different parts of ophio...

Structural studies with using of optical filter: A case study Marivan region west of Iran. Remote sensing methods are an efficient method to obtain valuable structural data. The development of remote sensing techniques provides some methods for the interpretation of structures. This research used the integration of remote sensing and structural int...

The plutonic units in the northwest of Sanandaj-Sirjan Zone emplaced under different thermal and stress regimes. Primary biotite was changed by hydrothermal fluids into illite, muscovite, and sericite, and phyllic and argillic alteration spread across the plutonic units. The intrusion margins exhibit propylitic alteration. The emplacement temperatu...

In this research the impact of structural controlling factors in the fluorite mineralization was evaluated, north west of the Sanandaj-Sirjan metamorphic zone. The structural and microstructural analysis indicated the major structure in the Bagher Abad region is fold related structures and shear fractures that cut the fold axes are the host for flu...

The closure of the Neo-Tethys ocean associated with the ophiolite obduction and the Oshnavieh ophiolite is the unknown part of the Neo-Tethys suture zone. Three well-known band ratio combinations applied to ASTER satellite image the result shows the ((2+4) /3, (5+7) /6, (7+9) /8) band ratio is the proper combination for the reorganization of rock u...

Circulation of hydrothermal fluid generally led to propagation of alteration zone. this zone development is related to the effective structure at a region, for this evaluation of alteration zone give valuable data about the structures. The study area located NE of Marivan city and is a part of Zagros collision zone. The structural analysis in the s...

The khoy ophiolite is a part of Sanandaj-Sirjan structural zone at NW Iran. This region have complicated deformation history because of geodynamic setting and ophiolite obduction prossess, and several deformation phase affacted rock units in this area. The shear zone have important role in the circulation of hydrothermal fluid and concentarion of c...

Fluorite mineralization is controlled by the multiple geological processes such as structural control, geochemical characterization of hydrothermal fluids, temperature and depth. The mineralization associated with the alteration of the host rocks and trapping of fluid in the host rock crystallographic defects. Alteration in the host rocks due to ci...

The northeastern part of the Tabriz, Khaje area has been studied to determine the relationship between the orientation of local structures and regional tectonics, and the influence of both on salt deformation. All the pre-Pliocene sedimentary rocks in the area belong to the Miocene Upper Red Formation. Sand-stones form most of the outcrops because...

The most part of barite deposits in the NW Iran have been epigenetically formed in the form of veins, fracture, and/or open-space fillings. For this reason, structural evaluation is the important factor for investigation of the barite mineralization in the host rocks. Fault and fracture are the predominant structures that can be distinguished in th...

The study area is located west of Lake Urmia and is based on the division of structural zones, the study area in Khoy-Mahabad unit escapes. The area is affected by tectonic events, which causes the magma to concentrate, magma's motion, and alteration of rocky units.Using satellite and satellite images, a map of algebra was derived using a linear ma...

Fracture system have important role in the formation of silica vein, and with attention to significance effect of silica vein in the ore mineral deposition, recognition of fault and fracture systems are one of the principle step in the mineral exploration. Structural analysis in the west of Ahar indicated three vein system with echelons array from...

In the mineral exploration lack of knowledge about the structural controller such as folds and faults led to imposing costs in the project. In this research program we used numerical models (finite elements) to simulation of fold growth and drown stress and strain curves per time or displacement per time. We divided folds base on morphology to thre...

Instability in the rock cause to opening of joint and fractures and decrease the quality of extracted rocks in a quarry. for this recognition of unstable or slided area and prevention of selecting these area for extraction target is important. the main goal of this research is zonation of a quarry and selection of best position for onset of extract...

‫.Density and structural analysis of major fault-related fractures in Tasuj area, Northwest Iran Abstract: Study of geological structure such as lineaments have been attracting attention in the recent years. Structural analysis of lineament requires detailed investigations. The spatial orientation of lineament have important role in the engineering...

The studied area is situated at the quadrangle of Khajeh geology map; northeast of Tabriz and southeast of Ahar in East Azerbaijan Province. The Khajeh area contains outcrops of salt domes in relation with the tectonic activities. The results of this research demonstrate on two systems of compression stress at NE-SW and NW-SE trends. The first one...

The Merivan-Sardasht shear zone is located in the northwest of the Sanandaj-Sirjan zone. Based on the tectonic setting and mineralization of the orogeny type in the northwestern part of Sanandaj-Sirjan is one of the most prospect areas for hosting metal minerals. In this study, the tectonic structures of the shear zones were studied using remote se...

The Misho Mountain in the NW Iran is a prominent topographic feature consisting of a series of major active faults. Spatial array of these faults caused uplift and exposure of crystalline basement (Kahar Formation) in the core of mountain. The active deformation that may affect the topography and change the uplift rate, and in this region can be qu...

Fracture system have important role in the formation of silica vein, and with attention to significance effect of silica vein in the ore mineral deposition, recognition of fault and fracture systems are one of the principle step in the mineral exploration. Structural analysis in the west of Ahar indicated three vein system with echelons array from...

محدوده مورد مطالعه در شمال باختر مرزن آباد، دارای گسلهای شاخصی میباشد. با توجه به نقش گسلها در رخداد زمین لغزش و شکلگیری فرونشستها و به تبع آن، وارد آمدن خسارت به سازههای سطحی همچون واحدهای صنعتی و شبکه توزیع برق در این منطقه، پهنهبندی پتانسیل فرونشست و ارزیابی تأثیر ساختارهای تکتونیکی بر میزان فرونشست، مورد بررسی قرار گرفت. پس از تعیین روند و نوع...

Misho Complex in NW Iran has a remarkable unique high topography surrounded by well known faults, where Precambrian basement rocks were uplifted and exposed. Structural data indicate that the exhumation of the Misho Complex was result of displacements along the North Misho, South Misho and Tasouj faults. Study of structural and thermochronometery a...

Distinguishing of emplacement mechanism of igneous body have important role in the interpretation of geodynamic evolution of area. The structural analysis of area has Misho Granite exposure, indicated important role of North Misho Fault (NMF) in the uplift and exhumation of this granite body. This fault also is one of the North Tabriz Fault (NTF) s...

The Misho Mountain in the NW Iran is a tectonically active region consisting of a series of major faults such as North Tabriz fault (NTF) and South Misho Faults (SMF) with bounded intermountain basinsand caused uplift and exposure of crystalline basement in the surface. The active deformation that may affect the topography in this region can be qua...

The Zagros fold-and-thrust belt of Iran is a result of the Alpine orogenic events (closure of neothetys) in the Alpine-Himalayan mountain range. The High Zagros Belt (HZB, also known as the crush Zone) marks the northeastern part of the Arabian passive paleomargin separated from the Iranian plate along the so-called Main Zagros Thrust (MZT) and the...