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العنوان
High resolution biostratigrahy of the eocene roks in subsurface and surface sections north gulf of suze area,egypt /
المؤلف
EL-Fiki, Wagih Mohamed.
هيئة الاعداد
باحث / وجيه محمد عبد العزيز الفقى
مشرف / حسن عبد المنعم الشيخ
مناقش / محمد الأمين أحمد البسيونى
مناقش / شعبان محمد على
الموضوع
Surface geology. Geology.
تاريخ النشر
2009.
عدد الصفحات
138P. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الجيولوجيا
تاريخ الإجازة
1/1/2009
مكان الإجازة
جامعة بنها - كلية العلوم - الجيولوجيا
الفهرس
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Abstract

The target of this study is to evaluate the foraminiferal faunas and nannoplankton
floras in an effort to refine existing biostratigraphic divisions in the northern part
of Gulf of Suez area , the study concentrates mainly on on the Stratigraphic,
Paleontologic investigations on two wells and one surface section.
Planktonic foraminiferal and calcareous nannoplankton zones, were correlated
with each other and shows good similarity in comparison with the Geologic time
scale 2004.
Lithostratigraphy, the late Paleocene through Middle Eocene in the studied
area is divisible into three rock units from base to top, Esna, Thebes, and Darat
formations, that unconformably overlies Sudr Formatin
(Maastrichtian age), which confirmed by CC25 nannoplankton Zone and
Globotruncana spp. foraminiferal zonal marker.
Thebes / Darat Formation contact, falls in the lower part of Zone NP15 &
around the Hankenina nuttalli / Globigerinatheka subconglobata zonal boundary,
coincides with Strugo & Faris (2003).
Esna Formation, Which was deposited during the late Paleocene and early
Eocene is represented in both wells and only the most top part of Esna
Formation is represented in Abu Zenima surface section where the section is
terminated.
The Thebes Formation. Conformably overlies the Esna Formation, was
deposited during the Early Eocene and the lower part of middle Eocene, and
representative in the three sections.
Darat Formation, Conformably overlies the Thebes Formation, and
unconformably underlies the Nukhul Formation and was deposited during middle
Eocene, and take place in our investigated area.
Paleontology, Planktonic foraminiferal and calcareous nannoplankton analysiss
of the south Abu zenima section in the west central Sinai and GS 114-1A &
GS 197-1 wells in the northern part of Gulf of Suez area have been completed
Summary and conclusion
and indicate ages from the Late Paleocene to Middle Eocene in both wells , from
Early to Middle Eocene in the surface section, illustrated in 3 range charts for
each discipline.
Calcareous nannoplankton has been organized and classified into 21 plates
according to the zonal markers and the assembalage of each zone, to facilitate
the zones definition.
Biostratigraphy, eleven planktonic foraminiferal biozones and nine
nannoplankton biozones are recognized from late Paleocene to middle Eocene,
the calcareous nannoplankton investigation are carried out to confirm the results
obtained from the planktonic foraminifera at the Paleocene/Eocene boundary and
through the Early-middle Eocene section as will as Early/Middle Eocene
boundary.
The main result of this investigation is the record of an almost complete section
in south Abu Zenima outcrop, from Early to middle Eocene in the west central
part of Sinai at the eastern coast of Gulf of Suez area.
Rhabdolithus inflata nannoplankton marker is recorded as an initial record in
Egypt, hence we divide NP14 to NP14a & NP14b subzones, accordingly we
approximate the Early/Middle Eocene boundary passes through NP14a, which is
closely matched with Acranina pentacamerata (P9) Zone and compatable with,
Geologic time scale of Gradstein et al. (2004).
The stratigraphic positions of many calcareous nannoplankton substitute markers
were discussed with other authors as mentioned before in the part of
stratigraphic remarks, at which point, some alternative markers fit and others
does not fit.
the harmony has been noticed, as a result of the comparison between
Planktonic foraminiferal & calcareous nannofossils biostratigraphic zones with
the Geologic time scale, Gradstein et al.(2004), table ( 2 ), which is considered
the most recent global time scale all over the world.