Agglutinated foraminifera from the Campanian-Maastrichtian Kiseiba Formation in the Kurkur area,Egypt |
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| Authors: | Mohamed Youssef Abdelbaset El-Sorogy |
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| Institution: | 1.Department of Geology and Geophysics, College of Science,King Saud University,Riyadh,Kingdom of Saudi Arabia;2.Department of Geology, Faculty of Science,South Valley University,Qena,Egypt;3.Department of Geology, Faculty of Sciences,Zagazig University,Zagazig,Egypt |
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| Abstract: | The upper Campanian to upper Maastrichtian sedimentary sequence of the Kiseiba Formation in south Western Desert is sampled and described in two surface sections (Sinn El Kaddab and Wadi Abu Siyal). Forty-four agglutinated foraminiferal species are identified from 42 samples in the studied succession. The benthic foraminiferal assemblages are dominated by agglutinated foraminifera which comprise more than 90% of the assemblage. The agglutinated foraminifera are subdivided into five morphogroups (A, B, C, D, E) according to shell architecture, integrated with the supposed microhabitat and feeding strategy. The foraminiferal assemblage is assigned to mixohaline shallow water environments. These assemblages with Ammoastuta megacribrostomoides and Ammotium bartheli suggest lagoonal environments with considerably reduced salinity in warm climates and high runoff for the late Campanian-Maastrichtian interval. |
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