Karstification is a process of geology and caused by mechanical or chemical erosionand solution in water, like lime stone, dolomite, gypsum or salts near the surface of theearth. Karstification is generally developed in an area where contains lime stone andlineament wit More
Karstification is a process of geology and caused by mechanical or chemical erosionand solution in water, like lime stone, dolomite, gypsum or salts near the surface of theearth. Karstification is generally developed in an area where contains lime stone andlineament with humid condition. Pabdeh anticline in Lali from Zagros Fold Belt southwest of Iran is selected to study the karstification and lineaments. This study beginswith digital image processing and extraction of lineaments on Landsat ETM+ imagedated 2002 and to map geology of the area. Geographical information system (GIS) isused for spatial analysis and to generate various maps. This study is emphasis toinfluences of lineaments-tectonics on karstification and guide for exploration ofground water in kart region of Pabdeh anticline. The study shows more accrue digitalgeology and structural maps than previous maps. This study also reveals the dolinesare following the lineaments directions in the area.
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The study area in terms of geological division is located in Zagros foldthrust belt. Inthe present study, the following quantitative and qualitative methods ofgeomorphology and structural geology were used together. Aerial photos, satelliteimages, geological and topogra More
The study area in terms of geological division is located in Zagros foldthrust belt. Inthe present study, the following quantitative and qualitative methods ofgeomorphology and structural geology were used together. Aerial photos, satelliteimages, geological and topographical maps were studied and interpreted. Severalmorphometric indices including facet%, sinuosity of mountain front (Smf), V ratio andratio of valley floor width to valley height (Vf) were calculated. Isobase line map aswell as lineament map and three maps of isofracture anomaly, lineament densityanomaly and lineament intersection intensity anomaly were plotted. Based on theabove mentioned analyses and presence of special morphotectonic features such as:linear valley, deflected streams, fault scarps, water springs, elongated alluvial fans anddrainage basins, tectonically the study area is too active. Due to the deformation of Naranticline (Z shaped), it may be attributed to the presence of a N-S basement or blindfault. This fault can also make different anomalies in drainage patterns, streamdirections and lineaments.
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The Ghezel Ozan River, the longest river system in the country, has responded to tectonic deformation thoroughly. In this paper the role of lineaments in making of active deformations via detection and characterization of geomorphic anomalies in the Ghezel Ozan River an More
The Ghezel Ozan River, the longest river system in the country, has responded to tectonic deformation thoroughly. In this paper the role of lineaments in making of active deformations via detection and characterization of geomorphic anomalies in the Ghezel Ozan River and correlation with magnetic lineaments is specified. In this study, the first fluvial anomalies have been identified on the satellite images and approved through DEM and field observations. Then these anomalies have been correlated with magnetic lineaments extracted from aeromagnetic maps and so the sub-surface active folds and faults have been recognized. Most ofthemagnetic lineaments in the Ghezel Ozan River basin have caused the geomorphic anomalies in the length of the river. The lineaments with trend of NW - SE have created various anomalies such as variations of channel pattern of the river, deflection of the river course and knick points in longitudinal profile of the river. The lineaments with trend of NE - SW have only straightened the course of the river.
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The faults and fractures play crucial roles in conducting groundwater flow and providing high recharge zones for aquifers. The hard rock formations are exposed on the ground surface of the west of Yazd Province in Iran and build a reliable groundwater source for consump More
The faults and fractures play crucial roles in conducting groundwater flow and providing high recharge zones for aquifers. The hard rock formations are exposed on the ground surface of the west of Yazd Province in Iran and build a reliable groundwater source for consumption. This study aims to provide a hydro-tectonic conceptual model of the region using remote sensing techniques and GIS. The geological map, groundwater resource data, geophysical reports, hydrogeological reports, and Landsat ETM satellite images are collected and evaluated by field visits. The lineaments densities of the area have been extracted and projected on various maps. The results demonstrate that the likelihood of groundwater flow is correlated positively with the region's main geological structures and groundwater resource availability. Finally, to conclude, the hydrotectonics model of the area consists of several distinctive and non-distinctive aquifers because of the presence of hydrogeological and tectonic barriers, water-conducting passages, and even neutral fractures.
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