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Register a new userBiostratigraphical study of Middle Miocene deposits in Northern part of Al-Kapeer Al-Shemaly
دراسة بيوستراتغرافية لتوضعات الميوسين الأوسط في الجزء الشمالي من حوض نهر الكبير الشمالي
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Tishreen University ورقة بحثية
Publication date
2016
fields
Geology
and research's language is
العربية
Authors
غادة محمد( باحث )
Created by
Shamra Editor
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تتواجد توضعات الميوسين الأوسط على شكل تكشفات محدودة المساحة في الأطراف الشمالية من حوض نهر الكبير الشمالي و تتميز بتغيرات كبيرة و سريعة في السماكة و السحنة. لقد تركزت هذه الدراسة على نتائج التحليل المستحاثي الدقيق لـ 41 عينة (قاسية و طرية) مأخوذة من ثلاث مقاطع جيولوجية، تم من خلالها تأكيد النطاقات الرئيسية المميزة للميوسين الأوسط اعتماداً على المنخربات البلانكتونية و هي: N9, -Orbulina suturalis-Globerotalia peripheroronda N10-N13-Globerotalia fohsi, Sphaaerodinellopsis subdehiscens- Globigrina drury N14 – Globigerina nepenthes- Globerotalia siakensis. كما تم تحديد المنخربات القاعية التي تميزت بتنوعها و تزايد أعدادها في الأطراف الشمالية للحوض النيوجيني و التعرف على الطبيعة الليتولوجية لهذه التوضعات المؤلفة من تناوبات كلسية حوارية و كلسية مارنية، متوسطة القساوة إلى مارنية طرية جداً ذات ألوان متباينة، كما ساهمت هذه الدراسة في الكشف عن بعض معالم التطورات الباليوجغرافية التي طرأت عل الحوض في تلك الفترة من الزمن.
Middle Miocene deposits reveal the form of outcrops which are limited in area on the northern boards of the basin of AL-KABEER Al-Shemaly River. It is characterized by a large and fast changes in thickness and facies. This study focused on the results of careful Fossile analysis of 41 samples (hard and soft) which were taken from the three geological sections, through which the principal zones, which characterize middle Miocene, were confirmed depending on planktonic foraminifera. N9, -Orbulina suturalis-Globerotalia peripheroronda N10-N13-Globerotalia fohsi, Sphaaerodinellopsis subdehiscens- Globigrina drury , N14 – Globigerina nepenthes- Globerotalia siakensis. It was identified as benthic foraminifera, which has been characterized by its diversity and their increasing numbers in the northern boards of the Neogene basin and identify the lithology of these deposits consisting of alternations of limestone and limestone of medium hardness to very soft marl with different colors. This study also contributed to the detection of some paleogeographical development in the basin in that period of time.
References used
Beard, J.H.& Jeefords, P. M., Cenozouc Planktonic foraminifera zonation and charaste Ristics of index formis. USA., univ. Kansan, AR. 62, 1975, P.245-330, P. 78-79
Cokopov, B. C. &Gamouda, A. E, practis ,index microfauna of foraminifera Mezozouc, Leningrad, 1991, P.225-373
Deubert. L., Liban, Syria et bordure des pays voisins: Notes et Mem, Moyenorient, 1966,V8, P.251-358
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Study of the general characteristics of Fractures in the central part of
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NW-SE , E-W.and showed increased fracture rate in
the
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Damat Lake, and 16 Tishreen Lake), also the effect of some physio-chemical p
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concentration of mercury in the three studied sites during seasons of a year, was higher in
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Al-Kabeer Al-Shemale river rises from Aqraa Mountain and coastal mountains, it is considered one of the largest rivers in the coastal area.Its catchment area is 1097 km2, and empties into the sea to the southern of Lattakia.The study aims to determin
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