Palynological zonation of Cenozoic non-marine sediments, Muglad Basin, Sudan
Published:January 01, 2005
D. T. Stead, M. Z. Awad, 2005. "Palynological zonation of Cenozoic non-marine sediments, Muglad Basin, Sudan", Recent Developments in Applied Biostratigraphy, A. J. Powell, J. B. Riding
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The Muglad Basin is part of the Central and West African Rift System that started to develop during late Jurassic/early Cretaceous time. The system evolved through three rift cycles spanning Berriasian to Cenomanian, Coniacian to Maastrichtian and Paleocene to Pliocene. In this work the results of a palynological study of selected wells from the Muglad Basin, Sudan are presented. The combination of samples from these wells has enabled a palynological analysis of a nearly complete Cenozoic section (Quaternary to Paleocene) which was developed during the last rift cycle. Five Zones have been recognized, most of which are further divided into two sub-zones. The Zones are (i) Gramineae - Chenopodipollis microporatus (Quaternary; Post-Adok Formation); (ii) Verrucato-sporites spp. (Pliocene-Miocene; Adok Formation); (iii) Cyathidites minor-Perfotricolpites digitatus (Miocene-Oligocene; Tendi Formation); (iv) Striatopollis spp. (Oligocene-Eocene; Nayil Formation); (v) Mauritiidites crassiexinus–Echimonocolpites rarispinosus (Paleocene; Amal Formation). The characteristics of each zone and corresponding sub-zones are discussed.
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Recent Developments in Applied Biostratigraphy
In recent years the application of biostratigraphy to hydrocarbon exploration and development has become increasingly important both scientifically and economically. The demand for higher stratigraphical resolution in field development studies has resulted in the utilization of new approaches. However, in under-explored areas with little reliable primary biostratigraphical data, conventional methods using relatively coarse biozonations still have relevance. The aim of this volume is to encourage an exchange of ideas and to seed new research initiatives particularly within integrated multidisciplinary teams. The papers are divided into four main themes which cover a broad range of modern applications of biostratigraphy. The first three themes are: UK North Sea field development; outcrop analogues; and international exploration and development. The final section discusses new methodologies, such as the application of correspondence analysis and multivariate correlation of wells, and palynological processing techniques applicable to the wellsite.