University of Khartoum

Palynology and Palynostratigraphy of Early Cretaceous Sediments in NW Muglad Basin, Central SW Sudan

Palynology and Palynostratigraphy of Early Cretaceous Sediments in NW Muglad Basin, Central SW Sudan

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Title: Palynology and Palynostratigraphy of Early Cretaceous Sediments in NW Muglad Basin, Central SW Sudan
Author: Hanan Mahmoud, Hussein
Abstract: The Palynostratigraphic study of continental sediments in SW Sudanese Interior Rift Basins is based on spores & pollen grains. NW Muglad Basin is part of SW Sudanese Interior Rift Basins, which contains huge amount of continental sediments deposited in fluvial-Iacustrine environments. Borehole data obtained from, Sharif-2 and Senna-Senna-l, were selected for the present study. The prepared samples yielded diverse spore/pollen assemblages; about. fifty-eight (58) palynomorphs species were recognized which belong to different types of plant groups such as Pteridophytes, Gymnosperms, Angiosperms and alga. From a total of fifty-eight (58) species presented on a range-chart, fourteen (14) species were described as being (Neocomian-Aptian); the most significant of these are Callialasporites dampiei, Spheripollenites scabratus, Exesipollenites tumntus, Deltoidospora Psiloslomata, Concavissimisporites punctatus, Auritulinasporites sp., Classopollis torosus, Klukisporites of variegatus, Marattisporitesscabratus, Lycopodiumsporites clavatiodes Inaperturopollenites limbatu, Gleicheniidites senonicus, Todisporites minor, Matonisporites equiexinus. The studied palynoflora associations from Bentui Formation (Late Albiann Cenomanian) of the two boreholes are somewhat similar with small variation. This assemblage also contains species from (Aptian-Albian) such as Afropollis jardinus, Equisetosporites jansonii, Cicatricosisporites orbiculatus. The studied palynomorphs assemblage from Abu Gabra Formation of Sharif-2 borehole shows high amount of Ephedripites and the brackish water algal spore Celyphus rallus, while the studied assemblage from the Bentiu Formation of Senna-Senna-l well produced numerous species of Cicatricosisporites sp.
URI: http://khartoumspace.uofk.edu/handle/123456789/14078
Date: 2015-06-22


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