Mehran Maghsoudi; Abdolhosein Hajizadeh; Mohammad Ali Nezam mahaleh; Zeinab Bayati Sedaghat
Abstract
The Lut Desert is in the southeast of Kerman province and one of the largest deserts of the world, which is one of the world’s driest and hottest places.Granulometric analysis of sediments can indicate the characteristics of the old formative processes and the morphology of landforms. Yardangs ...
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The Lut Desert is in the southeast of Kerman province and one of the largest deserts of the world, which is one of the world’s driest and hottest places.Granulometric analysis of sediments can indicate the characteristics of the old formative processes and the morphology of landforms. Yardangs (Kaluts) ofthe Lutplain have a very interesting and unique morphology in Iran and in the world, and recognizing the relationship between their granulometric characteristics and their rough and uneven shape, which is a set of diagonal hills or more or less parallel strands, can provide useful information. In this study, two samples of yardang or kalutfrom the Lut plain in the northeast of Shahdadcity located in north of Kaluts were selected and a number of sediment samples from different heights were taken in accordance with sampling principles. The sediment samples were measured in laboratory using pipette method. This method was first designed and implemented by the authors at the Faculty of Geography in Tehran University. In these two Yardang samples, it was found that water and wind erosion are among the dominant processes forming the Yardang shapes of the North of the Lut plain. In this research,calcimetry test, determination of sediment color was performed, and statistical parameters such as the mean of grains, standard deviation (SD), kurtosis and skewness of data were also calculated. According to the results derived from the granulometry and its related parameters, it can be concluded that the Yardangs of the northern part of the Lut plain at all altitudes of this form of roughness contain mainly muddy deposits. The results have also showna higher amount of silty sediments at higher altitudes of these two Yardangs. This research indicates that, the studied morphology of ovoid yardangs is in relation with the upper part’ssilty sediments and the lower part’s clayey sediments of these forms of roughness. It should be noted that, this article was taken from a research project which was completed through financial support of the Faculty of Geography-University of Tehran.
