Integration of Palynological and Foraminiferal Analyses toward Evaluation of the Paleoenvironment and Hydrocarbon Potential in the Orange Basin, SW Africa
Changes in the paleogeography during the Gondwana breakup and the proto-South Atlantic development have been of enduring significance to scientists. The realignment of these landmasses during the Mesozoic, which includes the Orange Basin formation in southern Africa, had a substantial effect on the environment. These paleoenvironmental differences likely affected fossil preservation and hydrocarbon maturation. Palynology is an invaluable tool for inferring paleoenvironmental conditions and hydrocarbon potential, and therefore, is used in this study to evaluate this key offshore South African area. A total of forty-three samples from six conventional cores from four exploration wells (K-A2, K-A3, K-H1, and K-E1) within three blocks were analyzed for their palynomorph, particulate organic matter (kerogen), and foraminiferal contents. Integration of the palynomorph, palynofacies, and foraminiferal data has provided information that suggest the sediments are early Cenomanian in age and deposited in a shallow marine (inner-middle shelf) setting. Moreover, they are characterized primarily by gas-prone Type-III with some oil-prone Type-II kerogen in this frontier basin. The integrated approach revealed significant information that can be used to calibrate basin models and improve the understanding of the petroleum potential of the basin.
M. K. Spencer et al., "Integration of Palynological and Foraminiferal Analyses toward Evaluation of the Paleoenvironment and Hydrocarbon Potential in the Orange Basin, SW Africa," Advances in Science, Technology and Innovation, pp. 193 - 211, Jan 2023.
The definitive version is available at https://doi.org/10.1007/978-3-031-16396-8_9
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Biostratigraphy; Frontier Basin; Hydrocarbon Potential; Orange Basin; Paleoenvironment; Palynology
International Standard Serial Number (ISSN)
Article - Journal
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01 Jan 2023