Roundness parameters of quartz grains of Recent aeolian sand deposits in Kuwait

Khalaf, Fikry I.; Gharib, I.M.

doi:10.1016/0037-0738(85)90028-4

Cited by 36 publications

(19 citation statements)

References 12 publications

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“…At first glance, these findings are incompatible with the general idea that rounding in aeolian sands increases with grain size (e.g. Goudie and Watson, 1981;Khalaf and Gharib, 1985). Similar trends were achieved from the analysis of aeolian sands from different regions of the world, where the degree of highest rounding does not necessarily occur in coarser grains (e.g.…”

Section: Roundnessmentioning

confidence: 52%

“…Similar trends were achieved from the analysis of aeolian sands from different regions of the world, where the degree of highest rounding does not necessarily occur in coarser grains (e.g. 1 -2 mm), but instead mean rounding values are relatively higher in finer sand grains (Thomas, 1984(Thomas, , 1987aKhalaf and Gharib, 1985) as later discussed by Thomas (1987b). This contradiction may resolved by considering that sand grains on the upwind side (stoss side) as they moved by creep or sliding; rolling and grain impacts or collisions may be inhibited.…”

Section: Roundnessmentioning

confidence: 70%

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Characterization of the aeolian terrain facies in Wadi Araba Desert, southwestern Jordan

Saqqa

Atallah

2004

Geomorphology

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Section: Roundnessmentioning

confidence: 52%

Section: Roundnessmentioning

confidence: 70%

Characterization of the aeolian terrain facies in Wadi Araba Desert, southwestern Jordan

Saqqa

Atallah

2004

Geomorphology

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“…Whitney et al (1983) attributed the better sorting of active dunes in the Great Nafud to winnowing of pre-existing stable dunes. This relationship was also noticed in the Ad Dahna sand sea of Arabia (Edgell 2006), in the Al Qashiniyah and Al Wafra sand sheets of Kuwait (Khalaf and Gharib 1985;Khalaf 1989aKhalaf , 1989b, in the Ash Shamiya Desert in southern Iraq (Shoček and Saadallah 1972), and in Ramlat Al Wahibah in eastern Oman (Goudie et al 1987).…”

Section: Provenance Of Eolian Sand In the Kamouraska Formation: Cambrmentioning

confidence: 61%

Quartz arenites of the Cambro–Ordovician Kamouraska Formation, Quebec Appalachians, Canada: II. Eolian sands in deep-sea sedimentary gravity-flow deposits

Malhame

Hesse

2015

Can. J. Earth Sci.

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The Kamouraska Formation is a quartz-arenitic unit of latest Cambrian -earliest Ordovician age in the Quebec Appalachians that was deposited by hyperconcentrated to concentrated density flows in a meandering submarine canyon on the continental slope bordering the Iapetus Ocean, as outlined in a companion paper. Detailed petrographic study of the quartz arenites of the Kamouraska Formation combined with scanning electron microscopy of grain surface textures suggests that the quartz sands are of eolian origin having been derived from an inland desert or, less likely, a barrier beach dune system. Transport of the mature quartz-arenitic sand onto the shelf and deposition into the deep sea was not accompanied by substantial mixing with material from other sources thus preserving the inherited eolian characteristics. A modern analogue for the eolian interpretation of the deep-sea quartz-arenite beds is as follows: thick, Late Pleistocene eolian sand beds on a modern abyssal plain in the East Atlantic referred to as eolian-sand turbidites that were deposited in the deep sea during glacial sea level lowstands when eolian sand transport to canyon heads was enabled by an exposed and shortened shelf. Similarly, an established sea level lowstand at the Cambro-Ordovician boundary would have facilitated the introduction of eolian sand of the Kamouraska Foundation into canyon heads on the upper slope from where turbidity currents and related density flows were triggered. Correlation of the Kamouraska Formation with the quartz arenites of the Cairnside Formation of Quebec (Keeseville Formation in northern New York State, Nepean Formation in southern Ontario) links the deep-sea deposits with remnants of an inland dune system. Résumé : La Formation de Kamouraska est constituée d'une unité d'arénite quartzique (Cambrien supérieur -Ordovicien inférieur) dans les Appalaches du Québec; elle a été déposée par des courants de densité hyperconcentrés à concentrés dans un canyon sous-marin à méandres sur la pente continentale à la bordure de l'Océan Iapetus, tel que souligné dans un article complémentaire. Une étude pétrographique détaillée des arénites quartziques de la Formation de Kamouraska jumelée à une microscopie électronique à balayage des textures de surface des grains suggèrent que les sables quartzeux sont d'origine éolienne et qu'ils proviennent d'un désert d'arrière-pays ou, ce qui est moins probable, d'un système de dunes de cordon littoral. Le transport du sable arénite-quartz mature sur la plateforme continentale et sa déposition en mer profonde n'ont pas été accompagnés d'un malaxage important avec du matériel d'autres sources, préservant ainsi les caractéristiques éoliennes héri-tées. Un analogue moderne pour l'interprétation éolienne des lits d'arénite quartzique de mer profonde est le suivant : d'épais lits de sables éoliens (Pléistocène tardif) sur une plaine abyssale moderne dans l'Atlantique Est, connus en tant que turbidites de sables éoliens, qui ont été déposés en mer profonde durant les périodes de bas niveau de...

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“…Khalaf and Gharib, 1985;Sagga, 1993;El-Sayed, 1999;Kasper-Zubillaga, 2009). Factors determining desert dune type were evaluated by Wasson and Hyde (1983).…”

Section: Dune Types and Roundnessmentioning

confidence: 97%

“…Various studies (e.g. Goudie and Watson, 1981;Khalaf and Gharib, 1985;Sagga, 1993;Kasper-Zubillaga, 2009) that analyzed aeolian sands from various dune areas of the world, showed that relatively coarser grains exhibit the highest rounding degree than finer grains.…”

Section: Durability and Abrasion Of Quartz Typesmentioning

confidence: 99%

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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Roundness parameters of quartz grains of Recent aeolian sand deposits in Kuwait

Cited by 36 publications

References 12 publications

Characterization of the aeolian terrain facies in Wadi Araba Desert, southwestern Jordan

Characterization of the aeolian terrain facies in Wadi Araba Desert, southwestern Jordan

Quartz arenites of the Cambro–Ordovician Kamouraska Formation, Quebec Appalachians, Canada: II. Eolian sands in deep-sea sedimentary gravity-flow deposits

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

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