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چکیده
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Dehgolan Basin is located in Kurdistan province and eastern part of Sanandaj City in Iran. This area is known as Dehgolan Basin where eastern part of it is limited by Qorveh-Plain. The whole basin area is estimated to be 2550 square km. From a geological perspective, Dehgolan plain can be counted as a part of Sanandaj-Sirjan zone which has the same geological history as Iran Central Zone. However, its structure, orientation and layer slope is different and more like similar to Zagros. Yellow coloured Dolomite found in eastern part is intensively crystallised and fractured. Shale and lime sandstone has covered most part of the area with 100m thickness. Quartzite, Shale, Sandstone has been found in southern part with 500m thickness which is very important from aquifer transmissivity point of view. Preliminary Results from Subsurface Hydrological Investigations of Dehgolan Plain (Iran-Kurdistan) using Geophysical Techniques Payam Sajadi, Amit Singh, Saumitra Mukherjee, Kamran Chapi The need for doing this research is studying conditions for protecting groundwater supplies as a unique source of water for this area. Geoelectrical surveys using the electrical resistivity method were carried out in the Dehgolan-Plain (Kurdistan Province, Iran) to investigate the sub-surface layering and water level. Applying the Schlumberger array a total of 189 vertical electrical soundings were done. Bore holes information and lithology data were modelled using Rockwork software to generate 3D sections and groundwater flow regime in the area. This was correlated with geological and geomorphological maps of the area and surface topography data. Ground truth surveys with GPS, soil texture analysis, topographic analysis have also been done to generate a GIS database and aid in further correlation with results from remote sensing observations from satellite images.
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