Geochemical Evaluation Sediments and Water of Shurabil Lake, Northwest of Iran (original) (raw)

Shurabil Lake, situated in south west of Ardebil City (Northwest of Iran) with 2 km distance from city centre, is one of the natural and continental lakes in Iran. It was created as a result of Shurabil fault activity within the limy hillocks in early Quaternary. This is the type of pluvial lake and has been formed along with argillite interlayers on the synclinal bed with limymarl basement rock. The samples taken from sediments deposited on the surface of the lakebed and investigation of the results from granulometry and chemical analyses indicate that these sediments are actually limy sands carried into the lake as a result of erosion of marls in surrounding hills. On the western coast of the lake, the above mentioned sediments are characterized with clayey sand texture, while towards the eastern side as the presence of clastic materials decreases and granules within the sediments get finer, the texture becomes silty. Lakebed sediments with PH>7, contain 3 – 12% of organic mate...