Source of the aeolian dune sand of Toshka area, southeastern Western Desert, Egypt

Hamdan, Mohamed A.; Refaat, Ahmed; Anwar, Esmat A. Abou El; Shallaly, N.A.

doi:10.1016/j.aeolia.2014.08.005

Cited by 27 publications

(18 citation statements)

References 28 publications

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“…5), and closely related to i.e. dune sands (Hamdan et al 2015;Muhs 2004). This statement agrees with our previous study, where the fan-like forms were attributed to cold and windy conditions in periglacial climate with additional contribution of snow/ice and fluvial signal (Kalińska-Nartiša, Nartišs 2016a,b).…”

Section: Fan-like Formssupporting

confidence: 81%

“…Indeed, their compilation can be tested towards the applicability in the numerous sedimentary environments, such as coastal (Dill et al 2012;Järvelill et al 2015), marine (Derkachev, Nikolaeva 2013), tsunami (Jagodziński et al 2012), fluvial (Guedes et al 2011;Nascimento et al 2015;Weckwerth et al 2013), aeolian (Hamdan et al 2015;KasperZubillaga, Zolezzi-Ruiz 2007;Kilibarda, Blockland, 2011;Ugolini et al 2008), or glacial settings (Mahaney et al 2011), where the HM proxies are commonly used. Consequently, this correlates with the Polish HM research, of which numerous approaches and applications have been widely tested in the peculiar sedimentary settings in different regions of Poland (Ludwikowska-Kędzia 2013; Marcinkowski, Mycielska-Dowgiałło 2013;Pisarska-Jamroży et al 2015;Wachecka-Kotkowska, Ludwikowska-Kędzia 2013;Woronko et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Heavy-mineral derived provenance study of Quaternary sediments of the Mazovian Lowland, Central Poland

Kalińska¹,

Nartišs²

2017

Baltica

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This study makes an attempt to characterise Quaternary sediments in terms of their heavy minerals (HM) composition. Authors focus on the Mazovian Lowland, Central Poland, where a number of clastic sediments of different age and origin overlap. Five sedimentary settings, covering the Saalian-Holocene (MIS 1-6) time frame, have been studied to reveal whether these sediments have single or multiple source areas and to decipher sediment transformations. In the glacial setting either garnet-or amphibole-dominated sediments occur. This unequivocal mineral combination likely reflects a multi-sourcing resulting from multi-directional ice advance. The HM taken from fan-like forms and aeolian sediments are closely related; these sediments are largely multicyclic and likely derived from pre-existing recycling sediments. Similar mineral suite is also typical for long-lasting aeolian processes and is observed in dune sediments. Ultrastable components are less frequent in the coversand, which points at a shorter-lived aeolian process. Finally, the fluvial setting reveals multi-sourcing largely depending on local geological conditions.

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Section: Fan-like Formssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Heavy-mineral derived provenance study of Quaternary sediments of the Mazovian Lowland, Central Poland

Kalińska¹,

Nartišs²

2017

Baltica

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“…Descriptive statistics for each variable (include the mean, standard deviation, maximum, minimum and range values) were calculated. To show the degree to which pairs of variables are correlated, a Pearson correlation (r) was carried out for the mean grain size (Mz; Hamdan et al, 2014), roundness ratios (Ro/An, VA/A, SA/SR and R/VR) and quartz-types (MS, MU and QP) together with Qp/Qm ratio of the aeolian sands of the Toshka area. The correlation matrix is shown in Table 3.…”

Section: Methodsmentioning

confidence: 99%

“…The Sinn el Kadab Plateau represents the high relief area and lies more than 300 m above sea level. The Toshka area is characterized by extensive accumulations of aeolian dunes represented mainly by barchan and longitudinal dune belts, which traverse the central and western parts of the Toshka plain trending in a N-S direction in addition to lee dunes and sand shadows accumulated in the leeward sides of the Nubian sandstone hills (Hamdan et al, 2014).…”

Section: Study Areamentioning

confidence: 99%

“…1) contains a variety of dune types and is an ideal study site to investigate the morphology of grains in hot deserts dominated by aeolian processes. The present study builds upon work by Hamdan et al (2014) which discussed the source of the aeolian dune sand of the Toshka area. They undertook textural, heavy-mineral and geochemical investigations on the aeolian dune sand of the Toshka area at southeastern Western Desert of Egypt in order to identify the probable source and mode of origin of these dune sands.…”

Section: Introductionmentioning

confidence: 99%

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Mineralogy and grain morphology of the aeolian dune sand of Toshka area, southeastern Western Desert, Egypt

Refaat

Hamdan

2015

Aeolian Research

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Source of aeolian dune sands on the northern margin of Qarhan Salt Lake, Qaidam Basin, NW China

Zhou

Yan

et al. 2019

Geological Journal

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The aeolian landforms in the Qaidam Basin have drawn increasing attention from geomorphologists for their morphological and formation mechanisms' similarities with their counterparts on Mars and Titan. Using grain-size and mineral composition data, this study investigated the source of aeolian dune sands found on the northern margin of Qarhan Salt Lake in the south central part of the Qaidam Basin. Results indicate that linear dune sands and gobi surface sediments are mainly composed of fine and very fine sands, while the yardang corridor sands are much coarser, with medium and fine sands in predominance. The curves of the linear dune sands show a standard normal distribution pattern. This is also the case for the gobi surface sediments and yardang corridor sands located away from linear dunes. However, the curves for these two sediment types show much wider kurtoses. The distribution curves for the yardang corridor sands located near the linear dunes are different from the above-mentioned sediments, which explicitly display bimodal distributions. More mineral types were detected in the yardang corridor sands and gobi surface sediments than in dune sands.But the major mineral compositions of the three kinds of sediments are similar. Contents of typical very stable and stable heavy minerals differ little among the three sediments, while the contents of some heavy minerals with poor stability differ greatly.The relative proportions of quartz, plagioclase, and orthoclase in all three kinds of sediments demonstrate that they all likely originated from the granite and granodiorite rocks of the Qilian Mountain ranges. Therefore, gobi surface sediments and yardang corridor sands near the study linear dune field could be the source of dune sands. Further investigations are needed to determine whether the yardang corridor sands far away from the study linear dune field feed dunes in the Sebei area.

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Source of the aeolian dune sand of Toshka area, southeastern Western Desert, Egypt

Cited by 27 publications

References 28 publications

Heavy-mineral derived provenance study of Quaternary sediments of the Mazovian Lowland, Central Poland

Heavy-mineral derived provenance study of Quaternary sediments of the Mazovian Lowland, Central Poland

Mineralogy and grain morphology of the aeolian dune sand of Toshka area, southeastern Western Desert, Egypt

Source of aeolian dune sands on the northern margin of Qarhan Salt Lake, Qaidam Basin, NW China

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