The Pindiro Group (Triassic to Early Jurassic Mandawa Basin, southern coastal Tanzania): Definition, palaeoenvironment, and stratigraphy

Hudson, W.; Nicholas, C. J.

doi:10.1016/j.jafrearsci.2014.01.005

Cited by 35 publications

(12 citation statements)

References 22 publications

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“…McElwain et al (2005) and Svensen et al (2007) suggested the Toarcian OAE was best supported by injection of isotopically light carbon resulting from the release of thermogenic methane owing to the intrusion of Gondwana coals by 183-184 Ma Karoo-Ferrar LIP dolerites; alternatively, Kemp et al (2005) suggested the negative CIE was due to orbitally paced methane hydrate release. The Karoo-Ferrar LIP temporally coincides with major Toarcian HSR events in Europe (e.g., Posidonia Shale and Jet Rock Formations: Röhl et al, 2001), Africa (Mbuo Formation: Hudson & Nicholas, 2014), North America (Poker Chip Shale: Riediger, 2002), and elsewhere.…”

Section: Karoo and Ferrar South Africa Antarctica And Australia (183 ± 1 Ma)mentioning

confidence: 80%

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

Bergman¹,

Eldrett

Minisini

2021

Geophysical Monograph Series

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This chapter summarizes geochronologic and other data for major Phanerozoic Large Igneous Provinces (LIPs), Oceanic Anoxic Events (OAEs) and organic-rich petroleum source rocks. It also evaluates the models that support or refute genetic links between the three groups. The evidence appears to favor genetic links between the three groups, however, additional high precision age and geochemical data are needed to validate several events. Furthermore, the chapter provides insights into the importance of LIPs in hydrocarbon exploration.

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Section: Karoo and Ferrar South Africa Antarctica And Australia (183 ± 1 Ma)mentioning

confidence: 80%

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

Bergman¹,

Eldrett

Minisini

2021

Geophysical Monograph Series

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“…The observed sediment distributions and lateral and vertical variations in seismic reflection patterns show that sediment supply was an integral component in the evolution of the Tanga Basin. Occurrence of limestone and salt deposits in the stratigraphy of the Tanzania coastal basins (Kapilima, 2003;Hudson and Nicholas, 2014;Didas, 2016) indicate that deposition was partly influenced by climate variations. However, sediment supply and climatic influences over the examined successions would require further study due to limitations of the available data in analyzing these parameters and thus are left out in this work.…”

Section: Discussionmentioning

confidence: 99%

Cretaceous–Quaternary seismic stratigraphy of the Tanga offshore Basin in Tanzania and its petroleum potential

Mvile

Kiswaka

Osinowo

et al. 2021

J Petrol Explor Prod Technol

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In this study, the available 2D seismic lines have been interpreted to understand the basin development and petroleum potential of the Late Cretaceous–Quaternary stratigraphy of the Tanga offshore Basin in Tanzania. Conventional seismic interpretation has delineated eight sedimentary fill geometries, fault properties, stratal termination patterns and unconformities characterizing the studied stratigraphy. The Late Cretaceous was found to be characterized by tectonic quiescence and uniform subsidence where slope induced gravity flows that resulted during the Miocene block movements was the major mechanism of sediment supply into the basin. The Quaternary was dominated by extensional regime that created deep N-S to NNE-SSW trending graben. The graben accommodated thick Pleistocene and Holocene successions deposited when the rate of tectonic uplift surpasses the rate of sea level rise. Thus, the deposition of lowstand system tracts characterized by debris flow deposits, slope fan turbidites, channel fill turbidites and overbank wedge deposits, known for their excellent petroleum reservoir qualities, especially where charged by Karoo Black Shales. Subsequent tectonic quiescence and transgression lead to the emplacement of deep marine deposits with characteristic seismic reflection patterns that indicate the occurrence of Quaternary shale sealing rocks in the study area. The occurrence of all the necessary petroleum play systems confirms the hydrocarbon generation, accumulations and preservation potential in the Tanga Basin.

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“…Characteristically, syn‐rift sedimentation is controlled by rift‐related extensional faulting, with sediments accumulating within half grabens (Bosellini, ; Clark, ; Coffin & Rabinowitz, ; Geiger et al., ; Mahanjane, ; Mbede & Dualeh, ). Sediments were deposited under mostly shallow marine conditions along the EA‐IND and MAD‐EA margin segments (Bosellini, ; Geiger et al., ), with a mixture of continental, transitional and shallow water facies along EA‐MAD (Coffin & Rabinowitz, ; Hudson & Nicholas, ; Mbede & Dualeh, ), and shelf to marine sediments along EA‐ANT (Mahanjane et al., ). In some margin segments, the main syn‐rift megasequence is easily identifiable (e.g., MAD‐EA), however, in others it is difficult to distinguish from the Karoo megasequence (EA‐IND, EA‐MAD).…”

Section: Discussionmentioning

confidence: 99%

New plate kinematic model and tectono‐stratigraphic history of the East African and West Madagascan Margins

2018

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The continental margins of East Africa and West Madagascar are a frontier for hydrocarbon exploration. However, the links between the regional tectonic history of sedimentary basins and margin evolution are relatively poorly understood. We use a plate kinematic model built by joint inversion of seafloor spreading data as a starting point to analyse the evolution of conjugate margin segments and corresponding sedimentary basins. By correlating megasequences in the basins to the plate model we produce a margin‐scale tectono‐stratigraphic framework comprising four phases of tectonic development. During Phase 1 (183–133 Ma) Madagascar/India/Antarctica separated from Africa, first by rifting and later, after breakup (at ca. 170–165 Ma), by seafloor spreading in the West Somali and Mozambique basins and dextral strike‐slip movement on the Davie Fracture Zone. Mixed continental/marine syn‐rift megasequences were deposited in rift basins followed by shallow‐marine early postrift sequences. In Phase 2 (133–89 Ma) spreading ceased in the West Somali basin and Madagascar became fixed to the African plate. However, spreading continued between the African and Antarctic plates and deposition of the early postrift megasequence continued. The onset of spreading on the Mascarene Ridge separated India from Madagascar in Phase 3 (89–60 Ma). Phase 3 was characterized by the onset of deposition of the late postrift megasequence with continued deep marine sedimentation. At the onset of Phase 4 (60 Ma onward) spreading on the Mascarene ridge ceased and the Carlsberg Ridge propagated south to form the Central Indian Ridge, separating India from the Seychelles and the Mascarene Plateau. Late postrift deposition continued until a major unconformity linked to the development of the East African Rift System marked the change to deposition of the modern margin megasequence.

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The Pindiro Group (Triassic to Early Jurassic Mandawa Basin, southern coastal Tanzania): Definition, palaeoenvironment, and stratigraphy

Cited by 35 publications

References 22 publications

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

Cretaceous–Quaternary seismic stratigraphy of the Tanga offshore Basin in Tanzania and its petroleum potential

New plate kinematic model and tectono‐stratigraphic history of the East African and West Madagascan Margins

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