NDLI: Hydrogeology, Log Analysis, and Hydrochemistry of Unconsolidated Aquifers South of El-Sadat City, Egypt

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Hydrogeology, Log Analysis, and Hydrochemistry of Unconsolidated Aquifers South of El-Sadat City, Egypt

Content Provider	Springer Nature Link
Author	Atwia, M.G. Hassan, A.A. Ibrahim, S.A.
Copyright Year	1997
Abstract	Agricultural and urban growth has increased the demands on groundwater supplies in areas east and west of the Nile Delta. The study area is about 80 km northwest of Cairo and about 15 km south of El-Sadat city, along the Cairo-Alexandria desert road. The aquifers in the study area are composed of sands and gravels with occasional intercalated clay beds. These sediments are Pleistocene and Miocene in age and are locally underlain by a relatively impermeable base of basalt. Two water-bearing zones are separated by about 25 m of clay and/or sandy clay beds. These zones are hydraulically interconnected by vertical flow of groundwater through the confining bed.Aquifer parameters and formation-water resistivity were evaluated from resistivity and neutron logs. Good agreement occurs between measured and estimated water resistivity. Chemical analyses of water samples indicate that groundwater is chemically homogeneous and low in total dissolved solids. The quality of water is excellent to good for irrigation. Le développement des villes et de l'agriculture a accru la demande en captages d'eau souterraine à l'est et à l'ouest du delta du Nil. La zone d'étude est située à environ 80 km au nord-ouest du Caire et à environ 15 km au sud d'El-Sadat, sur la toute du désert entre le Caire et Aledandrie. Les aquifères de cette région sont constitués de sables et de graviers avec parfois de intercalations argileuses. Ces sédiments datent du Pléistocène et du Miocène et reposent localement sur des basaltes constituant un substratum relativement imperméable. Deux horizons aquifères sont séparés par environ 25 m d'argiles ou d'argiles sableuses. Un éloulement vertical au travers de ces couches imperméables établit une liaison hydraulique entre ces deux horizons.Les paramètres de l'aquifère et la résistivité des terrains ont été obtenus à partir de logs neutroniques et de résistivité. Les valeurs mesurées et estimées pour la résistivité concordent bien. Les analyses chimiques d'échantillons d'eau montrent que l'eau souterraine est chimiquement homogène et peu minéralisée. L'eau souterraine est de bonne à excellente qualité pour l'irrigation. El crecimiento agrícola y urbano ha incrementado la demanda en el suministro de agua subterránea en áreas al este y al oeste del Delta del Nilo. El área de estudio se encuentra situada a unos 80 km al noroeste de El Cairo, y a unos 15 km al sur de la ciudad de El-Sadad, sobre la carretera el Cairo-Alejandría. Los acuíferos en el área de estudio se componen de arenas y gravas, ocasionalmente con capas intercaladas de arcilla. Estos sedimentos son de edades pleistocena y miocena y localmente están limitados inferiormente por una base de basalto relativamente impermeable. Se encuentran dos zonas conductoras de agua, separadas por unos 25 m de capas arcillosas o arcillo-arenosas. Estas zonas están interconectadas hidráulicamente por un flujo vertical de agua a través de la capa confinante.Los parámetros del acuífero y la resistividad del agua de formación se evaluaron a partir de registros de resistividad y neutrónicos. Existe un buen ajuste entre los valores de resistividad medidos y calculados. Los análisis químicos de las muestras de agua indican que el agua subterránea es químicamente homogénea y con un bajo valor de total de sólidos disueltos. La calidad del agua se puede considerar entre excelente y buena para riego.
Starting Page	27
Ending Page	38
Page Count	12
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	5
Issue Number	2
e-ISSN	14350157
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-11-20
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Geology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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