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Abstract
Tis the northern coast of the Oman Sea is located in the northern Chabahar in southern Sistan and Baluchistan province. The geographical location of the study area is 25° 18´ in north latitude and eastern longitude 60° 37´. In order to study geochemical, mineralogical and sedimentological evaporite deposits of non-systematic method were taken 15 samples. The samples analyzed by National Geological Organization in Karaj. Statistical studies on geochemical data was performed using the software SPSS17. Was calculated Correlation coefficients, cluster and Factor analyses. According to the results of chemical analysis and field observations, the study area is located in Supratidal. And are directly affected by sea water. The main source of the basin has been affected by external factors basin (large evaporate and sea water fed) are placed. The amount of sodium and chlorine are the maximum amount and the rest less than 1. The amount of boron and lithium in the sediments show significant correlation (average between 338.8 and 738.5) that the correlation is similarly changed. The extent of these changes can be affected by seasonal rivers of Shoor and tis or related environmental factors. There are also significant differences between the amount of lithium and boron (average between 399.7 and 738.5), probably affected by coastal erosion and transport margins have been deposited by flowing water and This makes boron from earlier upland areas neat and lithium stacked in margins remain high in areas where has accumulated. One important result of this research is to identify evaporite minerals that are mainly halite. However, given the known elements can be said study area prepared for all three categories evaporite minerals (chloride, sulfates and carbonates) is in low amounts. According to cluster and factor analysis, three sources were identified included biogenic, eugenic (continental) and environment .Finally we can say is done sedimentation in the study area in a semi-enclosed coastal sedimentary environment (Sabkha).
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