کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4729464 1356532 2006 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Aptian–Maastrichtian palynomorphs from the offshore Tano Basin, western Ghana
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Aptian–Maastrichtian palynomorphs from the offshore Tano Basin, western Ghana
چکیده انگلیسی

Cretaceous dinoflagellate cysts and miospores have been recovered from the Tano 1-1 and 1S-3AX wells, offshore of western Ghana. Based on marker palynomorphs (Afropollis jardinus, Elaterosporites klaszii, Elaterocolpites castelainii, Sofreipites legouxae, Reyrea polymorphus, Cyclonephelium vannophorum) an Aptian-early Cenomanian age has been assigned to sediments from the well Tano 1-1. The taxa Auriculiidites reticulatus, Spinizonotriletes echinatus, Buttinia andreevi, Longapertites spp., Echitriporites trianguliformis, Dinogymnium spp., Trichodinium castanea, Andalusiella spp., which are elements typical of Campanian–Maastrichtian sediments have been recognized in the sediments from 1S-3AX.Palaeoenvironmental interpretation based on identified palynomorphs in the light of their ecological preferences and also on the relative proportions of palynomorph groups, indicate that the Aptian-lower Cenomanian sediments were deposited in a marginal marine environment with vegetation on wetlands, under a relatively dry climate. The Campanian–Maastrichtian sediments suggest a fluctuation between marginal to open marine (inner shelf) conditions. The sediments have characteristic elements indicative of the Albian–Cenomanian “Elaterate Province”, and the late Cretaceous “Senonian Palmae Province”, which supports a warm tropical climate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of African Earth Sciences - Volume 46, Issue 4, November 2006, Pages 379–394
نویسندگان
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