کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5787728 1641990 2017 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Répartition stratigraphique et biozones des kystes de dinoflagellés au passage Jurassique moyen-Jurassique supérieur (Bathonien supérieur-Oxfordien inférieur) dans le Bassin de Guercif, Maroc nord-oriental
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Répartition stratigraphique et biozones des kystes de dinoflagellés au passage Jurassique moyen-Jurassique supérieur (Bathonien supérieur-Oxfordien inférieur) dans le Bassin de Guercif, Maroc nord-oriental
چکیده انگلیسی
Despite the stratigraphical significance of dinoflagellate cysts as reliable markers for correlating and dating Jurassic-Cretaceous strata, investigations into this palynomorph group in the southern Tethyan Realm, specifically northwest Africa, are sparse and somewhat parochial. Most research on Jurassic dinoflagellate cysts is focussed on European depocentres in the Boreal and Sub-Boreal realms. This study is on biostratigraphical data from two petroleum boreholes (MSD1 and KDH1) drilled during 1985 in the Guercif Basin, northeast Morocco by ONAREP (Office National de Recherche et d'Exploitation Pétrolier), now ONHYM (Office National des Hydrocarbures et des Mines). These boreholes penetrated a thick siliciclastic succession, attributed to the Middle and Upper Jurassic, below Miocene marls. Over sixty dinoflagellate cyst taxa were identified. Four dinoflagellate cyst biozones, named GI to GIV, are established for the late Bathonian to early Oxfordian interval. These biozones are defined on the basis of the first appearance datum (FAD) and/or the last appearance datum (LAD) of some biomarker taxa which have wide geographical distributions. These are: Ctenidodinium combazii and Ctenidodinium sellwoodii for the GI Biozone (late Bathonian-early Callovian); Ctenidodinium continuum and Meiourogonyaulax caytonensis for the GII Biozone (middle Callovian); Gonyaulacysta centriconnata and Wanaea thysanota for the GIII Biozone (late Callovian-earliest Oxfordian); and Liesbergia liesbergensis and Systematophora penicillata for the GIV Biozone (early Oxfordian). These biozones are correlated to those already established for the respective intervals in other palaeogeographic regions, such as the Boreal, Sub-boreal and Tethyan realms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annales de Paléontologie - Volume 103, Issue 3, July–September 2017, Pages 197-215
نویسندگان
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