Preliminary late Miocene palynomorph assemblages from the Quifangondo and Luanda formations, Onshore Kwanza Basin, Angola
نویسندگان
چکیده
A Miocene succession exposed at the Cabo Ledo and Miradouro da Lua sections in Onshore Kwanza Basin, Angola, was examined for palynology. Palynomorphs of preliminary late age identified are presented herein. The upper part Quifangondo Formation is dated as middle Tortonian based on co-occurrence pollen grain Fenestrites spinosus dinoflagellate species Selenopemphix armageddonensis. palynomorph signature indicates a neritic marine environment dominated by cyst taxa. (late to Messinian) also documented first time base Luanda taxa Echitricolporites spinosus, longispinosus, Monoporopollenites annulatus, Retistephanocolpites gracilis. this unit reflects an inner (coastal/lagoon transitional) terrestrial palynomorphs very rare present research contributes data improving stratigraphical framework formations, both which recognized main potential source rocks reservoirs Post-Salt Paleogene/Neogene Petroleum System Basin. This significant contribution provides important biostratigraphic palaeoenvironmental defining vital temporal horizons these settings basin where petroleum exploration interest.
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ژورنال
عنوان ژورنال: Journal of African Earth Sciences
سال: 2021
ISSN: ['1464-343X', '1879-1956']
DOI: https://doi.org/10.1016/j.jafrearsci.2021.104141