Palynofacies analysis and sedimentary environment of Early C | 16712
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International Research Journal of Geology and Mining

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Palynofacies analysis and sedimentary environment of Early Cretaceous sediments from Dixcove 4-2x well, Cape Three Points, offshore Tano Basin, western Ghana


Atta-Peters D and Kyorku NA

Palynofacies analysis carried out on fifty eight (58) cutting samples from the Dixcove 4-2x well offshore Cape Three Points in the South Tano Basin, identified five palynofacies types (P-I to P-V). Palynofacies types P-I and P-IV suggest proximity to a fluvio – deltaic source in a moderately dysoxic environment, P-II reflects a proximal (pro delta) dysoxic - suboxic environment, P-III is indicative of deposition in an oxidizing condition in proximity to terrestrial sources and P-V is attributed to deposition resulting from high preservation rate and low energy dysoxic- anoxic condition in marginal marine environment. An Aptian to Cenomanian age has been assigned to the interval studied based on known stratigraphically important palynomorphs. The presence of Afropollis jardinus, Classopollis spp, Ephedripites spp, Elaterspores and the pteridophytes Cicatricosisporites, Deltoidspora, Cyathidites etc) suggest a paleoenvironment with parent plants inhabiting wetlands in a humid, warm coastal plain in a semi-arid climate. Thermal maturation of kerogen in sediments of super cluster A (Phytoclast group) has the potential of generating wet gas and condensate and that of super cluster B (AOM group), generation of oil with little or no potential of commercial source.

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