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العنوان
Subsurface Geological Studies on the Miocene Formations in Ras Gharib-Ras Shukheir Area Eastern Desert, Egypt /
المؤلف
Abd El-Mawla, Abd El-Baset Mohamed.
هيئة الاعداد
باحث / Abd El-Baset Mohamed Abd El-Mawla
مشرف / A. Kh. El-Gindy
مشرف / M. I. Farid
الموضوع
Mollusks, Fossil. Paleontology - Denmark. Paleontology - Miocene.
تاريخ النشر
1989.
عدد الصفحات
112 P. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الجيولوجيا
تاريخ الإجازة
1/1/1989
مكان الإجازة
جامعة المنيا - كلية العلوم - Geology
الفهرس
Only 14 pages are availabe for public view

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Abstract

1. Discussion on the Environmental Conditions of Deposits.
2. Conclusions on the Oi I Entrapment.
The above m2ntioneJ presentation of the subsurface geologic
data of the Miocene sediments in Ras Gharib - Shukheir area, beside
the different analyses and interpretations given in this work togetther with the previous discussions and resul ts of other investigations, lead to the following results and conclusions
The factors controlling oil entrapment in the area, are beleived to be related to the stratigraphy and tectonics of the Mioc~ne pe-
.tion to tectonics, sedimentation and subsidence through time of
deposition, beside their sedimentary environments, were discussed
by different investigators as, Weeks (1952), Sloss (1953), Kay
(1955), Dunbar and Rodgers (1957), Weller (1960) and others.
The Miocene section’in the Gulf of Suez region is differenttiated into the Lower Miocene (Gharandal Group) and the Middle Mioceene (Evaporite Group). The Upper Miocene deposits are not repereseB~ ted in the region as a resul t of the major unconformity between the Miocene and the overlying Pliocene and Recent deposits (Babbitt,1973). The Gulf of Suez depression was broken up by many smaller normal faaults into several hundred fault blocks of varying sizes. The tecctonics history of the Gulf of Suez depression had resulted in the relative sinking of major block faults for different sediments from the Paleozoic to Eocene with different magnitudes and intensities. These movements had affected the Miocene successions that differ
in both facies and thickness from one block to another. can be shown that within a limited area, deep water deposiihave tak~n place on the lower blocks, while shallow - water
were subjected to subarial erosion .. This led to some lateral variaation as regards, the grain size of the sediments, in the shallower tractive power was active, 1. e. the waves follow the ba-
sin bottom and led to the deposition of only coarse sediments. Whil e in places of deeper water, waV2S did not follow the bottom and this led to the deposition of finer sediments in the relatively more quite water (Babbitt, 1978).
Generally, the surface upon which the different sedimentary furmations were laid down was uneven. This fact explains the depossition of different thicknesses for the different rock types in diffferent loc at ions at the same time (Morsy, 1977) ..
By the advent 0 f the Lower Miocene, the Miocene Sea had traansgressed from the Tethys Sea southwards, through the Gulf of Suez graben towards the Red Sea. Reefs were developed and flourisheu over and near the uplifted and eroded hlocks that persisted as subaqueous highs within this Early Miocene Sea .. Fine clastic sediments rich in Mediterranean fauna first filled the downthrown blocks, and ultimat-
sediments are founrl overlapping rocks of Eocene to Pre- cambrian age (Babbitt, 1978). Ranter (1965), pointed out that the lithologic chharacteristics of the Gharandal Group (Nukhul and Rudeis Formations) in the Gulf of Suez region indicate that it was deposited under open