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Mashhadi, Naser, karimpour Reihan, Majid, Jahani, Davood, Mohammadi, Yalda, Shamshiri, Sirous. (1405). Origin, Source, Composition and Transport Pathways of Sand Dune (A Case Study: Garmsar Dune Fields).. , 31(1), 1-17. doi: 10.22059/jdesert.2026.107462
Naser Mashhadi; Majid karimpour Reihan; Davood Jahani; Yalda Mohammadi; Sirous Shamshiri. "Origin, Source, Composition and Transport Pathways of Sand Dune (A Case Study: Garmsar Dune Fields).". , 31, 1, 1405, 1-17. doi: 10.22059/jdesert.2026.107462
Mashhadi, Naser, karimpour Reihan, Majid, Jahani, Davood, Mohammadi, Yalda, Shamshiri, Sirous. (1405). 'Origin, Source, Composition and Transport Pathways of Sand Dune (A Case Study: Garmsar Dune Fields).', , 31(1), pp. 1-17. doi: 10.22059/jdesert.2026.107462
Mashhadi, Naser, karimpour Reihan, Majid, Jahani, Davood, Mohammadi, Yalda, Shamshiri, Sirous. Origin, Source, Composition and Transport Pathways of Sand Dune (A Case Study: Garmsar Dune Fields).. , 1405; 31(1): 1-17. doi: 10.22059/jdesert.2026.107462

Origin, Source, Composition and Transport Pathways of Sand Dune (A Case Study: Garmsar Dune Fields).

Desert
دوره 31، شماره 1، شهریور 2026، صفحه 1-17    اصل مقاله (2.02 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/jdesert.2026.107462
نویسندگان
Naser Mashhadi1؛ Majid karimpour Reihan* 1؛ Davood Jahani2؛ Yalda Mohammadi2؛ Sirous Shamshiri3
1International Desert Research Center (I.D.R.C.), University of Tehran, Karaj, Iran
2Department of Geology, Islamic Azad University North Tehran Branch, Tehran, Iran
3Department of Arid and Mountainous Regions Reclamation, College of Agriculture and Natural Resources, University of Tehran, Karaj, Alborz, Iran
چکیده
In arid environments dominated by dune fields, the form, alignment, and aeolian characteristics of sand dunes provide critical insights into their origin, sediment sources, and transport pathways. This study assesses the sedimentological characteristics of the Garmsar desert dunes to identify these key parameters. Surface sand samples were collected across a representative distribution within the Garmsar dune fields. Sediment characterization was performed using dry sieving for particle size analysis, thin-section microscopy, and X-ray diffraction (XRD) for bulk mineralogy. The results demonstrate that dune form and alignment effectively record the strong wind directions in the region. The mean sand size ranges from 187 to 345 μm (medium to very fine sand), with sorting coefficients between 1.556 and 1.779 (moderately to moderately well-sorted). These findings suggest that the sand has undergone relatively short-distance transport from its source. Mineralogical data indicate that the dunes are primarily composed of carbonate and volcanic minerals. Consequently, the primary sand origin are identified as the Upper/Lower Red Formations and the Qom Formation in the Kohe Sorkh area, with sediment transported via the Shur River in the northwest. Based on grain size characteristics, the presence of rock fragments, and mineralogical composition, it is concluded that the sediments are predominantly derived from local sources.
کلیدواژه‌ها
Garmsar؛ Mineral composition؛ Particle size؛ Sand dunes؛ Sorting
آمار
تعداد مشاهده مقاله: 50
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