Terrestrial palynology and age assessment of the Gedaref Formation (eastern Sudan)

Eisawi, Ali A. M.; Schrank, Eckart

doi:10.1016/j.jafrearsci.2009.01.005

Cited by 13 publications

(3 citation statements)

References 13 publications

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“…Another probable equivalent of the LS is the Nubian Sandstone of Sudan, locally identified to be early Cretaceous (Neocomian) (Edwards, 1926;Whiteman, 1970Whiteman, , 1971Vail, 1974;Beauchamp, 1988;Schull, 1988;Salama, 1997) or Maastrichtian, e.g. the Gedaref Formation of eastern Sudan (Klitzsch and Squiyres, 1990;Eisawi and Schrank, 2009) (Fig. 1b).…”

Section: Chronostratigraphic Settingmentioning

confidence: 99%

Stratigraphy, sedimentology and diagenetic evolution of the Lapur Sandstone in northern Kenya: Implications for oil exploration of the Meso-Cenozoic Turkana depression

Tiercelin

Potdevin

Thuo

et al. 2012

Journal of African Earth Sciences

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Section: Chronostratigraphic Settingmentioning

confidence: 99%

Stratigraphy, sedimentology and diagenetic evolution of the Lapur Sandstone in northern Kenya: Implications for oil exploration of the Meso-Cenozoic Turkana depression

Tiercelin

Potdevin

Thuo

et al. 2012

Journal of African Earth Sciences

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“…Geologically Figure 1 ; the lower Proterozoic rocks of the basement complex (Mainly Granitic Gneisses) [ 34 ], Syn-orogenic Granit and Syn-orogenic gabbro underlain the sandstone of Gedaref formation, Tertiary (Oligocene) basalt [ 35 ], Umm Rawaba formation, sand sheets and recent alluvium and wadi deposits. The groundwater of the area was taped at the sandstone of Gedaref formation sequence, alluvium soil, and fractures of the Oligocene basalt aquifers with depths ranging from 14 to 64 m.…”

Section: Methodsmentioning

confidence: 99%

Geospatial Distributions of Groundwater Quality in Gedaref State Using Geographic Information System (GIS) and Drinking Water Quality Index (DWQI)

Huag

Zhao

Abbass

2019

IJERPH

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The observation of groundwater quality elements is essential for understanding the classification and distribution of drinking water. Geographic Information System (GIS) and remote sensing (RS), are intensive tools for the performance and analysis of spatial datum associated with groundwater sources control. In this study, groundwater quality parameters were observed in three different aquifers including: sandstone, alluvium and basalt. These aquifers are the primary source of national drinking water and partly for agricultural activity in El Faw, El Raha (Fw-Rh), El Qalabat and El Quresha (Qa-Qu) localities in the southern part of Gedaref State in eastern Sudan. The aquifers have been overworked intensively as the main source of indigenous water supply in the study area. The interpolation methods were used to demonstrate the facies pattern and Drinking Water Quality Index (DWQI) of the groundwater in the research area. The GIS interpolation tool was used to obtain the spatial distribution of groundwater quality parameters and DWQI in the area. Forty samples were assembled and investigated for the analysis of major cations and anions. The groundwater in this research is controlled by sodium and bicarbonate ions that defined the composition of the water type to be Na HCO3. However, from the plots of piper diagram; the samples result revealed (40%) Na-Mg-HCO3 and (35%) Na-HCO3 water types. The outcome of the analysis reveals that several groundwater samples have been found to be suitable for drinking purposes in Fa-Rh and Qa-Qu areas.

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“…The Gedaref Basin is surrounded by Precambrian metavolcanics and metasediments (Fig. 1b) and is filled with fluvial to deltaic sediments of the Late Cretaceous Gedaref Formation (Eisawi and Schrank, 2009). These are partially overlain by Cenozoic basalts (Vail, 1988; Fig.…”

Section: Geological Backgroundmentioning

confidence: 99%

Quaternary alluvial paleosols of the Atbara River, eastern Sudan: description and paleoenvironments

Mohammednoor,

Bibi,

Eisawi

et al. 2023

J Quaternary Science

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Quaternary climatic changes in the Nile Basin and their effects on the evolution of African mammals and vegetation are poorly understood, particularly for the last 1 Ma. Pleistocene (~230 to <17 ka) alluvial sediments exposed along the middle stretches of the Atbara River in eastern Sudan are rich in fossil vertebrates and are ideal for paleoenvironmental reconstruction during this time interval. We performed petrographic, mineralogical and geochemical analyses on the middle Atbara paleosols to reconstruct the paleoclimate and paleolandscape. We describe Aridisols/Calcisols characterized by calcretes and containing gypsum and halite, and Vertisols with pedogenic slickensides and a relatively large amount of smectite. The paleosols indicate that the study area transitioned from an arid to semi‐arid climate during Marine Isotope Stage (MIS)7/6, to a more humid climate during MIS5, and then a return to more arid conditions during MIS2. The studied paleosols likely supported a range of grassland and wooded grassland savanna habitats. Our study confirms that the Atbara River Valley provided favorable living conditions for Pleistocene large mammal communities including Homo, potentially facilitating dispersals out of Africa through the Nile corridor.

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Terrestrial palynology and age assessment of the Gedaref Formation (eastern Sudan)

Cited by 13 publications

References 13 publications

Stratigraphy, sedimentology and diagenetic evolution of the Lapur Sandstone in northern Kenya: Implications for oil exploration of the Meso-Cenozoic Turkana depression

Stratigraphy, sedimentology and diagenetic evolution of the Lapur Sandstone in northern Kenya: Implications for oil exploration of the Meso-Cenozoic Turkana depression

Geospatial Distributions of Groundwater Quality in Gedaref State Using Geographic Information System (GIS) and Drinking Water Quality Index (DWQI)

Quaternary alluvial paleosols of the Atbara River, eastern Sudan: description and paleoenvironments

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