کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8916065 | 1641988 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Le Campanien-Maastrichtien du bassin des Aurès, Algérie : biostratigraphie, paléoenvironnements et leurs implications
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کلمات کلیدی
Ostracodesbenthic and planktonic foraminiferaAuresPaléoenvironnement - palaeoenvironmentOstracods - اتریشAlgeria - الجزایرAlgérie - الجزایرbiostratigraphy - بیواستراتیگرافیBiostratigraphie - بیواستراتیگرافیLithostratigraphy - لیتو استراتیگرافیLithostratigraphie - لیتوواستراتیگرافیPalaeoenvironment - محیط زیست Palaeoen
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فسیل شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An integrated study of the lithological, micropaleontoligical, sedimentological and statistical data has been done on samples taken from four geological sections (El Gaaga, Tighanimine and El Kantara) spread in different sea areas. This allowed to redefine the stratigraphy of the studied area to provide information about the benefits of some kinds of foraminifera, planktonic and ostracods in knowing the palaeoenvironment and identifying the types referring to the latter during the late cretaceous. The late creataceous appeared in Aures in a form of two hills separated by a light lowness. This morphology corresponds generally to the tripartite composition of the Campanian-Manstrichtian with lower member of limestone-marl (Haraoua Member), a median marl member (Akhdar Member) and an upper member of massive limestones (Ncham member). The regularity of this trilogy changed in the anticline of Dj. El Azereg through a reduction, visibly affecting the tree members. The study of the foraminifera in the late cretaceous (Campanian-Manstrichtian) in the Aures proved the existence of 141Â species (48Â planktonic and 93Â benthic foraminifera). Applying the concepts of biostratigraphy mainly on the foraminifera allowed to distinguish different bizones, ranging from lower Campanian of El Gaaga and El Kantara cuts (Globotruncanita elevata biozone) and Maastrichtian (Contusotruncana contusa biozone). The biostratigraphical framework is thus relatively precise and helps precising for instance the position of some inconsistent boundaries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annales de Paléontologie - Volume 104, Issue 1, JanuaryâMarch 2018, Pages 1-26
Journal: Annales de Paléontologie - Volume 104, Issue 1, JanuaryâMarch 2018, Pages 1-26
نویسندگان
Sana Benmansour, Abdelouahab Yahiaoui, Fatiha Kechid-Benkherouf,