Abstract
A total of 212 sand samples were collected from aeolian surface sediments in a major dune corridor, northwestern Kuwait. Five main physical properties were taken into consideration in analyzing aeolian samples, namely color, shape, roundness, particle morphometry, and surface area. The analysis of quartz particles by the scanning electron microscope shows the influence of transportation on the microfeatures of individual particles. The surface deposits are dominantly unimodal and occasionally bimodal. It is obvious that coarse and medium sand are the dominant size fractions within aeolian deposits. The results according to the Munsell color system between downwind and upwind values show no variations. Also, the average percentages of roundness subclasses for upwind and downwind samples are similar (6.7%). The average values (area, equivalent diameter, perimeter, and elongation) for aeolian samples in downwind are slightly higher than in upwind and Al-Dibdibba Formation samples, but the values overlap at 1 standard deviation. The interrelationship diagrams show that the shapes of the particles within samples in the three groups are running in the same trend. In general, the northwestern (upwind) particles show more mechanical and chemical features compared with southeastern particles (downwind). The slight variation between aeolian (upwind and downwind) samples is attributed to the transportation effect of these particles. This led to a conclusion, based on the overall results of physical properties, that the coarse and medium particles (about 80% of the whole aeolian sample) are dominantly derived from local sources.
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Acknowledgments
This work was funded by two foundations. These are Kuwait Foundation for the Advancement of Science (KFAS) for project (2008-1505-03) and the Kuwait Institute for Scientific Research (KISR) for (ECO77C). Thanks also to Mr. I. Ibrahim for helping in drafting some of the figures.
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Al-Dousari, A.M., Al-Hazza, A. Physical properties of aeolian sediments within major dune corridor in Kuwait. Arab J Geosci 6, 519–527 (2013). https://doi.org/10.1007/s12517-011-0353-0
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DOI: https://doi.org/10.1007/s12517-011-0353-0