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The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis. / Fathy Hussien Abdou Soliman

Swansea University Author: Fathy Hussien Abdou Soliman

Abstract

Carbonate sediments in the northern Nile Valley were subjected to stratigraphical and sedimentological studies which led to a complete basinal analysis. Initiation of this basin occurred in the early Late Eocene at 40 MY. A workable lithostratigraphy is developed to group the various Formations (Ben...

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Published: 1988
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
URI: https://cronfa.swan.ac.uk/Record/cronfa42551
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spelling 2018-08-02T16:24:29.6341957 v2 42551 2018-08-02 The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis. 245ddfc0f94b7abb95cf3c71a98ff3c3 NULL Fathy Hussien Abdou Soliman Fathy Hussien Abdou Soliman true true 2018-08-02 Carbonate sediments in the northern Nile Valley were subjected to stratigraphical and sedimentological studies which led to a complete basinal analysis. Initiation of this basin occurred in the early Late Eocene at 40 MY. A workable lithostratigraphy is developed to group the various Formations (Beni Suef, Birket Qarun, Saqqara, the Qurn, and the Wadi Hof) under one regional rock unit; the Middle Mokattam Unit. Biostratigraphical zonations were adapted, by means of nannoplankton and (both micro and larger) foraminifera, to date the strata as closely as possible and to achieve chronostratigraphical correlations. Onlap-offlap and facies interfingering relationships are recorded and discussed. The stratigraphical investigation has shown the presence of a depositional basin (Middle Mokattam basin) and detected its outline. Sedimentological studies and detailed modal analysis of carbonate grains have identified 12 major facies and 36 microfacies associations. These have clarified the depositional environments which occupied the basin. Careful basinal analysis, for both stratigraphical and sedimentological investigations, together with paleoecological determination of carbonate grains and communities, were used to reveal the basin configuration. Soft sediment deformation is also recorded and used to interpret the pattern of syndepositional subsidance which was controlled by rejuvenated deep-seated faults. Recurring uplift of the external northwestern block shaped the basin and controlled the depositional processes. This was responsible for an influx of residemented deposits derived either from nearby shelves or from adjacent paleohighs. The resedimented deposits formed deeply chajinelled fans and clastic barriers. The basin exhibits abundant evidence of synchronous tectonic uplift and sedimentation. Features such as growth femits, syn-sedimentary and syn-tectonic unconformities, debris and mass gravity flow deposits demonstrate a direct link between sedimentation and tectonism, and highlight the episodic nature of uplift in the external parts of the basin. This uplift resulted in the syn-sedimentary southward shifting of the depositional axis. E-Thesis Sedimentary geology.;Geology. 31 12 1988 1988-12-31 COLLEGE NANME Geography COLLEGE CODE Swansea University Doctoral Ph.D 2018-08-02T16:24:29.6341957 2018-08-02T16:24:29.6341957 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Fathy Hussien Abdou Soliman NULL 1 0042551-02082018162503.pdf 10805300.pdf 2018-08-02T16:25:03.4230000 Output 27766472 application/pdf E-Thesis true 2018-08-02T16:25:03.4230000 false
title The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis.
spellingShingle The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis.
Fathy Hussien Abdou Soliman
title_short The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis.
title_full The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis.
title_fullStr The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis.
title_full_unstemmed The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis.
title_sort The stratigraphy and sedimentology of Middle and Late Eocene carbonates of the Nile Valley, Egypt: A basinal analysis.
author_id_str_mv 245ddfc0f94b7abb95cf3c71a98ff3c3
author_id_fullname_str_mv 245ddfc0f94b7abb95cf3c71a98ff3c3_***_Fathy Hussien Abdou Soliman
author Fathy Hussien Abdou Soliman
author2 Fathy Hussien Abdou Soliman
format E-Thesis
publishDate 1988
institution Swansea University
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
document_store_str 1
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description Carbonate sediments in the northern Nile Valley were subjected to stratigraphical and sedimentological studies which led to a complete basinal analysis. Initiation of this basin occurred in the early Late Eocene at 40 MY. A workable lithostratigraphy is developed to group the various Formations (Beni Suef, Birket Qarun, Saqqara, the Qurn, and the Wadi Hof) under one regional rock unit; the Middle Mokattam Unit. Biostratigraphical zonations were adapted, by means of nannoplankton and (both micro and larger) foraminifera, to date the strata as closely as possible and to achieve chronostratigraphical correlations. Onlap-offlap and facies interfingering relationships are recorded and discussed. The stratigraphical investigation has shown the presence of a depositional basin (Middle Mokattam basin) and detected its outline. Sedimentological studies and detailed modal analysis of carbonate grains have identified 12 major facies and 36 microfacies associations. These have clarified the depositional environments which occupied the basin. Careful basinal analysis, for both stratigraphical and sedimentological investigations, together with paleoecological determination of carbonate grains and communities, were used to reveal the basin configuration. Soft sediment deformation is also recorded and used to interpret the pattern of syndepositional subsidance which was controlled by rejuvenated deep-seated faults. Recurring uplift of the external northwestern block shaped the basin and controlled the depositional processes. This was responsible for an influx of residemented deposits derived either from nearby shelves or from adjacent paleohighs. The resedimented deposits formed deeply chajinelled fans and clastic barriers. The basin exhibits abundant evidence of synchronous tectonic uplift and sedimentation. Features such as growth femits, syn-sedimentary and syn-tectonic unconformities, debris and mass gravity flow deposits demonstrate a direct link between sedimentation and tectonism, and highlight the episodic nature of uplift in the external parts of the basin. This uplift resulted in the syn-sedimentary southward shifting of the depositional axis.
published_date 1988-12-31T03:53:11Z
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