NDLI: The use of seismic interpretation for delineating the characteristic features of Messinian channels in the north Nile Delta, Egypt

Content Provider	Springer Nature Link
Author	Selim, El Sayed Ibrahim
Copyright Year	2010
Abstract	Abu Madi Messinian Formation occupied a prominent issue as the most exploratory target in the search for natural gas in the Nile Delta. Interpretation of the available onshore seismic reflection data of the northeastern part of the Nile Delta reveals that there is a series of troughs, depressions, and mounded structures within the Abu Madi Formation (Messinian time). Onlap, downlap, and truncation relationship of reflections were observed very close to fault locations in the Miocene time. Many channels have been imaged clearly and described on the seismic reflection data of the onshore Nile Delta. The depths to these channels range between 2.5 s in the southeast to 3.1 s (t.w.t.) while their width ranges from 1 km to more than 5 km. These channels were formed by two factors: (1) submarine erosion and redeposition, during the relative sea level falls and (2) tectonic effect. Many of these channels followed more or less the trends of the historic branches of the ancient Nile Delta. The classification of these channels is based on some factors: (1) channel morphology (depth and width), (2) channel shape, and (3) tectonic effect.يعتبر متكون أبو ماضى من أهم الأهداف الإستراتيجية فى مجال البحث و التنقيب عن الغاز الطبيعي بدلتا النيل. ,وقد أدى تفسير البيانات السيزمية الإنعاكسية المتاحة على الجزء الشمالي لدلتا النيل على وجود سلسلة من الأحواض و المنخفضات داخل متكون أبو ماضى (عصر الميسينين). وقد وجد أن هناك علاقات تداخل وانتهاء للمنعكسات السيزمية ملحوظ بالقرب من فوالق الميوسين. وقد تم التعرف من خلال هذه الدراسة على العديد من القنوات بوضوح داخل متكون أبو ماضى وقد تم وصفها على البيانات السيزمية في المنطقة البرية لشمال دلتا النيل حيث توجد هذه القنوات على عمق 2.5 ثانية إلى 3.1 ثانية بينما يتراوح عرضها واتساعها ما بين 1كم إلى أكثر من 5 كم. وقد أوضحت هذه الدراسة أن هذه القنوات داخل متكون أبو ماضى تكونت بإحدى طريقتين. الطريقة الأولى بفعل النحت التحت مائي وإعادة الترسيب أثناء هبوط وانخفاض مستوى سطح البحر فى عصر الميسينين (الميوسين العلوي) والطريقة الثانية بفعل تأثير العوامل التكتونية. كما أثبتت هذه الدراسة أن هذه القنوات تتبع بدرجة كبيرة اتجاهات الأفرع القديمة لدلتا النيل. وقد تم تقسيم هذه القنوات على عدة عوامل منها شكل القناة و من حيث عمقها واتساعها ومن حيث تأثير العوامل التكتونية.
Starting Page	713
Ending Page	722
Page Count	10
File Format	PDF
ISSN	18667511
Journal	Arabian Journal of Geosciences
Volume Number	5
Issue Number	4
e-ISSN	18667538
Language	Arabic
Publisher	Springer-Verlag
Publisher Date	2010-12-16
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Messinian Onlap Downlap Truncation Nile Delta Egypt Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Environmental Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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