دراسة بيوستراتغرافية لتشكيلات الكريتاسي في منخفض الدو/سوريا/ وأهميتها في التعرف على بيئات الترسيب القديمة
Abstract
Cretaceous formations have been studied in number of wells at Al_Daww depression by taking /57/ crashed samples for preps of studying their content of fossils of Foraminifers and Ostracoda, study of Ostracoda reveals their important beside the foraminifera in stratigraphic determine and bled up layer correlations. Also, it reveals their important in locating their sediment environment, wither shallow to medium depth in general but it became relatively deep at upper Shiranish formation, and it may be concordant with natural sediment formations studied. Layers correlation reveals’ increase formations thickness and depth from north east toward North West that make more hope for oil in this directions. تمت دراسة تشكيلات الكريتاسي في عدد من الآبار المحفورة في منخفض الدو وذلك بأخذ /57/عينة فتاتية بهدف دراسة محتواها المستحاثي من المنخربات والأوستراكودا, بينت دراسة الأوستراكودا أهميتها إلى جانب المنخربات في التحديد الستراتغرافي وإقامة المضاهاة الطبقية. بالإضافة إلى أهميتهما أيضا في التعرف على بيئة الترسب؛ إذ كانت بيئة الترسيب ضحلة إلى متوسطة العمق بشكل عام ،لكنها تصبح عميقة نسبيا في أعلى تشكيلة الشيرانيش، وقد توافق ذلك مع طبيعة رسوبيات التشكيلات المدروسة، كما بينت المضاهاة الطبقية زيادة سماكات التشكيلات الرسوبية وزيادة عمقها من الشمال الشرقي باتجاه الجنوب الغربي مما يزيد من الآمال النفطية في هذا الاتجاه.Downloads
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