Ostracodes from Modern Lake Qarun (Fayum, Egypt)

Bassiouni, Mohamed Amin; Anan, Haidar; Bouhkary, Mohamed; Bahr, Salah

doi:10.1127/njgpa/172/1997/107

Cited by 4 publications

(1 citation statement)

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“…The modern and Holocene ostracods assemblages in the lacustrine sediments of the Faiyum paleolake are abundant in some sediment sections (Abdel-Malek and Ishak 1980; Bassiouni et al 1985Bassiouni et al & 1986Keatings et al 2010;Hamdan et al 2020). Species diversity is however fairly low but include Cyprideis torosa and Heterocypris sp.…”

Section: Mollusks and Ostracods Of F 3-08 Corementioning

confidence: 99%

Microfacies analysis and paleolimnology of latest Pleistocene - Holocene lacustrine sediments of Faiyum paleolake, Egypt

Hamdan

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Osman

et al. 2022

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The geomorphological and geological settings of Faiyum Depression make its lake sediments relevant to both the paleoclimate and paleohydrology of North Africa in general and Egypt in particular. Faiyum Depression is an endorheic basin that received fresh water from the Nile River during seasonal high flows throughout most of the late Pleistocene and Holocene. A detailed analysis of the textural and microfacies of lacustrine sediments were carried out. The sediment at the base of core F3-08, represent the last shirking phase of the previously huge late Pleistocene Lake phase with high beaches at c. 45m ASL. This phase represents ended by complete dissociation of the lake and prevailing of desert condition with accumulation of aeolian sand. An early Holocene freshwater mega-lake initially filled almost the whole Faiyum Depression and their beaches are existed at elevation of c. 25m ASL and since that time lake levels have fluctuated markedly leading to the small saline lake (Lake Qarun). During the Early and Middle Holocene, lake level changes were largely influenced by changing Nile floods driven by African monsoons and Westerlies affecting the African Nile headwaters. Detailed examination of sediment structures using high resolution microfacies differentiation in a continuous Holocene sediment core revealed the fine detail of sedimentological complexities. These are primarily attributed to changes in sediment supply, sedimentological conditions and sediment accumulation rates as the lake system responded to environmental modifications caused by both climate and by ancient people.

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Section: Mollusks and Ostracods Of F 3-08 Corementioning

confidence: 99%

Microfacies analysis and paleolimnology of latest Pleistocene - Holocene lacustrine sediments of Faiyum paleolake, Egypt

Hamdan

Afify

Osman

et al. 2022

Preprint

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Ostracods and the Holocene palaeolimnology of Lake Qarun, with special reference to past human–environment interactions in the Faiyum (Egypt)

et al. 2010

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We present an ostracod record covering the past two millennia from an 8.25-m core taken from Lake Qarun, in the Faiyum Depression of Egypt. The occurrence of ostracod species in the lake is controlled primarily by variations in solute composition, which are in turn related to shifts in catchment land use. At times when the Faiyum Depression supported thriving agriculture, lake water contained Na ? -Cl -brine, and Cyprideis torosa dominated the ostracod assemblage. When the Faiyum Depression experienced periods of environmental and economic decline, lake water contained Na ? -HCO 3 -brine, and Limnocythere inopinata dominated. The relative abundance of other ostracod species provides additional information about past conditions in Lake Qarun including salinity and lake level changes. Overall, the ostracod assemblages provide evidence for human influences in the Faiyum, which extend back before instrumental or detailed observational records began.

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Evaluation of ostracod-based palaeoenvironmental reconstruction with instrumental data from the arid Faiyum Depression, Egypt

et al. 2006

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Ostracodes from Modern Lake Qarun (Fayum, Egypt)

Cited by 4 publications

References 0 publications

Microfacies analysis and paleolimnology of latest Pleistocene - Holocene lacustrine sediments of Faiyum paleolake, Egypt

Microfacies analysis and paleolimnology of latest Pleistocene - Holocene lacustrine sediments of Faiyum paleolake, Egypt

Ostracods and the Holocene palaeolimnology of Lake Qarun, with special reference to past human–environment interactions in the Faiyum (Egypt)

Evaluation of ostracod-based palaeoenvironmental reconstruction with instrumental data from the arid Faiyum Depression, Egypt

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