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Accueil du site → Doctorat → Egypte → Integrated Geophysical, Stratigraphicaland Hydrogeological Investigations of the Lower Miocene Aquifer around Moghra Lake, North Western Desert, Egypt

Tanta University (2020)

Integrated Geophysical, Stratigraphicaland Hydrogeological Investigations of the Lower Miocene Aquifer around Moghra Lake, North Western Desert, Egypt

Saleh, Maha Ahmed Mohamed.

Titre : Integrated Geophysical, Stratigraphicaland Hydrogeological Investigations of the Lower Miocene Aquifer around Moghra Lake, North Western Desert, Egypt

Auteur : Saleh, Maha Ahmed Mohamed.

Etablissement de soutenance : Tanta University

Grade : Doctor of Philosophy (PhD) in Hydro-Geophysics 2020

Résumé
Increased population and intensive agricultural activity attract the attention of Egyptian Government to cultivate 1.5 million Fadden in different desert areas that will be irrigated mainly from groundwater. Moghra area is considered as a main part of the Egyptian desert reclamation projects.Understanding the hydrochemistry of the Moghra aquifer is an onus to properly plan and manage the agricultural activities. The area of study is situated in the northeastern part of the Qattara Depression between latitude 30°21’68″ and 30°31’36″N and Longitude 28°75’03″ and 29°00’81″E. The basic geologic structure of the area under study was deduced from a detailed land magnetic survey. The resulted magnetic field map is analyzed using different filtering techniques and tomographic inversion. Field observation,stratigraphic, sedimentological and lithofacies studies including ; rock type,bed thickness, lateral bedding, sedimentary structures, facies variations and three-dimensional spatial configurations in combination with magnetic susceptibility were carried out for the exposed lower Miocene successions to predict the lithofacies characters and quality of the aquifer in Moghra area.The Moghra Formation is composed essentially of medium to coarse grained,friable sands, calcareous, cross bedded sandstone, siltstone and shale with thin intercalations of fossiliferous carbonates. Repeatedly stacked cyclic deposits from channel-fill and flat-laminated lithofacies are the main geometric shape forms the outcrop sediments of the Moghra Formation.Highly vertical and lateral variations in the bed geometry and facies architecture of the different depositional environments (estuary and/or deltaic to open marine) beside several tpes of diagenetic processes caused the heterogenety of the Moghra aquifer. The direction of groundwater flow in the heterogenetic Moghra aquifer is controlled by a fault system deduced from the magnetic study. The system of faults is running in NE-SW, NW-SE and NS.

Présentation étendue (EULC)

Page publiée le 5 janvier 2021