The use of geomagnetic for geophysical and geological studies is a new method for receiving different information from new and old faults and lineaments. Accordingly, the present study is applied research and it use combined the two methods, analytical signal and Euler's combined method and invented a new combined method to estimate the depth, location and shape of the magnetic and gravity sources. As a case, this research selected Iran's Zagros zone. This region due to the geological dynamics is considered by many geologists. In this regard, the 1:250,000 framework of Haji Abad was selected as a case study because of its convenient location for structural analysis. As a result, with airborne magnetic images survey, and applying filters in the vertical derivative and analytical signal, lineaments in depth of this region discovered and investigated.

East Azarbaijan belongs to the Iranian plateau and is part of lesser Caucasus province. Studied area is located in west-central Alborz. The intrusion of oligocene bodies in various units causes the alteration and mineralization in northwest of Iran. The Hizejan-Sharafabad is one of this named mineralized zone. Granitoidicrocks with component of Granodiorite to alkali have been influenced by hydrothermal fluids. Fractures and faults are as weak zone in earth surface and hydrothermal fluids rise to surface by these geological structures. These solutions cause to alteration in host rocks. Alteration zones are important features for the exploration of deposits. The altered rocks have specific absorption in some spectral portion and ASTER sensor is able to identify the type of alteration. Remote sensing method is useful tool for discovering altered area. The purpose of this study is to appraise ASTER data for surveying altered minerals in Hizejan-Sharafabad area in the event of detecting the potential mineralized areas. In this research, False Color Composite (FCC), Band ratio, and color composite ratio techniques are applied on ASTER data and Silica, Argilic, and Propylitic alteration zones are detected. These alteration types and mineralized area are related to Hizejan-Sharafabad fault which is absent in the fault maps. ASAR image processing has been used for lineaments and faults identified by the aid of Directional and Canny Algorithm filters. The structural study focuses on fracture zones and their characteristics including strike, length, and relationship with alteration zones.

In this research the fault parameters causing the September 27, 2010 Kazeron Earthquake with a magnitude of MW = 5.8 (BHRC) were determined using the random finite fault method. The parameters were recorded by 27 accelerometer stations. Simulation of strong ground motion is very useful for areas about which little information and data are available. Considering the distribution of earthquake records and the existing relationships, for the fault plane causing the September 27, 2010 Kazeron Earthquake the length of the fault along the strike direction and the width of the fault along the dip direction were determined to be 10 km and 7 km, respectively. Moreover, 10 elements were assumed along the length and 7 were assumed along the width of the plane. Research results indicated that the epicenter of the earthquake had a geographic coordination of 29.88N-51.77E, which complied with the results reported by the Institute of Geophysics Tehran University (IGTU). In addition, the strike and dip measured for the fault causing the Kazeron Earthquake were 27 and 50 degrees, respectively. Therefore, the causing fault was almost parallel to and coincident with the fault. There are magnetic discontinuities on the analytical signal map with a north-south strike followed by a northwest-southeast strike. The discontinuities are consistent with the trend of Kazeron fault but are several kilometers away from it. Therefore, they show the fault depth at a distance of 12 km from the fault surface. S. Dana et al.

Zagros orogenic belt has developed on northern-eastern edge of Arabian plate from Northern-Western-Southern-Eastern Turkey to Strait of Hormuz with a length of over 2000 km. Thick sedimentary series of the Zagros (6-12 km) has maintained complex tectonic history of the region, which represents all stages of development of a basin from a passive continental shelf to a rift. This finally represents various stages of deformation in relation to ophiolite obduction and continental collision. The study area is located in the south and southeastern part of Iran in the range of 28 and 29 to 55 and 57. The study area includes Hormozgan and Kerman Provinces in national classification. Geographic position of this region at the intersection of three sedimentary structural zones of Zagros, Makran and Central Iran has revealed that Hormozgan Province has specific geological and structural features. Nowadays, remote sensing techniques and particularly structural analysis with satellite images are supplement to the observation and field interpretation. Landsat satellites can be noted in this regard, which has helped the scientists to interprete natural science since a long time ago. Landsat 8 is equipped with panchromatic band and thus has a high spatial resolution. Therefore, the images obtained from this satellite are used. The images are raw and after application of various filters and image processing operations by ER mapper and Arc GIS the lineaments that have remained unidentified are observed. The discoveries are then introduced to the realm of construction geology in the form of a new map of regional faults using the remote sensing technologies.

The north-south Qatar-Kazerun fault, with an estimated 450-km length, is a fault with lithic basement. It is mostly covered by young Quaternary alluvium, which has led to obscurities of rock structure and fractures. As residential areas (such as Nour-Abad, Khumeh Zar, Qaemiyeh and Kamaraj) are mainly placed on plains covered by Quaternary alluvium, telemetry methods, especially structural analyses based on satellite images, which are nowadays regarded as good complements to field studies. That is why many satellites are recently launched for different scientific objectives. Landsat is one of these research satellites; it is for long helping scientists in different fields of natural sciences. The present paper enjoys the latest information obtained through Landsat 8. Using several image reproducing operations and assistant software, it draws a new structure for the area and presents it for further analysis and interpretation.