East African rift system: offset, age and tectonic significance of the Tanganyika-Rukwa-Malawi intracontinental transcurrent fault zone

Tiercelin, Jean-Jacques; Chorowicz, J.; Bellón, Hervé; Richert, J.P.; Mwanbene, J.T.; Walgenwitz, F.

doi:10.1016/0040-1951(88)90133-3

Cited by 96 publications

(57 citation statements)

References 6 publications

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“…Recent work by our group Roberts et al, 2004; in press a ) has confirmed at least two temporally distinct depositional episodes for the Red Sandstone Group, clarifying certain aspects of the contentious debate surrounding the nature and age of these strata in the RRB (e.g., Spence, 1954;Spur, 1954;Tiercelin et al, 1988;Ebinger et al, 1989;Wescott et al, 1991;Kilembe and Rosendahl, 1992;Damblon et al, 1998;Morley et al, 1999). Deposits associated with the older of these two events [Unit I] consist of a series of red sandstones and mudstones considered to be Cretaceous in age, based in part on faunal and lithological similarities with Aptian Dinosaur Beds of Malawi (Dixey, 1928;Spence, 1954;Colin and Jacobs, 1990;Jacobs et al, 1990;Mateer et al, 1992).…”

Section: Rukwa Rift Basin and The Red Sandstone Groupmentioning

confidence: 90%

“…Unit I contains articulated non-avian dinosaurs, whereas Unit II preserves Paleogene-restricted mammals (e.g., the phiomorph rodent Metaphiomys; Stevens et al, in press-a). These new faunal data, combined with the wide range (i.e., Middle Jurassic to Miocene) of previous age assignments for the Red Sandstone Group in southwestern Tanzania (e.g., Tiercelin et al, 1988;Ebinger et al, 1989;Wescott et al, 1991;Kilembe and Rosendahl, 1992;Damblon et al, 1998;Morley et al, 1999), emphasize that additional work is necessary to fully characterize the temporal and depositional history of this sedimentary sequence.…”

Section: Age Of Unit I-red Sandstone Group Rukwa Rift Basinmentioning

confidence: 91%

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A new vertebrate fauna from the Cretaceous Red Sandstone Group, Rukwa Rift Basin, Southwestern Tanzania

O’Connor

Gottfried

Stevens

et al. 2006

Journal of African Earth Sciences

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Section: Rukwa Rift Basin and The Red Sandstone Groupmentioning

confidence: 90%

Section: Age Of Unit I-red Sandstone Group Rukwa Rift Basinmentioning

confidence: 91%

A new vertebrate fauna from the Cretaceous Red Sandstone Group, Rukwa Rift Basin, Southwestern Tanzania

O’Connor

Gottfried

Stevens

et al. 2006

Journal of African Earth Sciences

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“…Similarly, in the kinematic models and synthetic maps of the EARS (Tiercelin et al, 1988;Morley, 1999a;Chorowicz, 2005 and many others), the role of the Manyara-Dodoma segment within the dynamics of the EARS is sometimes under represented. This is probably due to the fact that these syntheses were based on the interpretation of large-scale remote-sensing images and the ETOPO30 digital database that did not show clearly the features associated with this segment.…”

Section: The Manyara-dodoma Rift Segment In Central Tanzaniamentioning

confidence: 96%

Fault kinematics and tectonic stress in the seismically active Manyara–Dodoma Rift segment in Central Tanzania – Implications for the East African Rift

Macheyeki

Delvaux

Batist

et al. 2008

Journal of African Earth Sciences

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“…Bishop and Trendall 1966;Chorowicz 2005;Ebinger 1989;Frostick et al 1986;Johnson and Odada 1996;Lambiase and Bosworth 1995;Lepersonne 1949;Morley 2002;Rosendahl et al1992;Tiercelin et al 1988;Tiercelin and Lezzar 2002;Wheeler and Karson 1989). However, the data acquisition for the northern part of the Western Rift branch-the Edward and Albert Rifts (Fig.…”

Section: Introductionmentioning

confidence: 93%

Middle Miocene to Pleistocene sedimentary record of rift evolution in the southern Albert Rift (Uganda)

Roller

Hornung

Hinderer

et al. 2010

Int J Earth Sci (Geol Rundsch)

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This study presents an almost complete Middle Miocene to Pleistocene sequence of synrift sediments in the western branch of the East African Rift. The studied succession is exposed in several patches on an eastward tilted block between the northern tip of the Rwenzori Block and the eastern shoulder of the Albert Rift. In this position, it reaches a maximum thickness of 600 m of which 350 m have been logged systematically by analysing lithofacies and sediment architecture. Stratigraphic subdivision of the succession relies on published biostratigraphic data of endemic mollusc associations and their correlation across East Africa. The synrift sediments encountered are siliciclastics ranging from clay to coarse gravel with gypsum and ferrugineous interlayers or impregnations. Lithofacies and architectural analysis indicate alluvial plain, delta plain, nearshore, delta front, or lacustrine depositional environments. Based on the vertical stacking pattern, prograding and retrograding trends of the depositional environments, and climatic indicators (e.g. conservation of feldspar, gypsum, and/or iron hydroxide precipitation), four evolutionary phases can be distinguished: (i) a first phase between ca. 14.5 and 10.0 Ma is characterised by bedload-dominated fluvial environment with massive sandy to gravelly bedforms, feldspar-rich sands, rare iron impregnations and relatively low accommodation space. This phase is interpreted as pre-and early synrift sedimentation under a semiarid climate. (ii) From ca. 10.0 to 4.5 Ma predominantly fine-grained siliciclastics were deposited in a distal fluvial plain to lacustrine setting characterised by limited accommodation space. Fluctuation of thin beds, dominance of clay and frequent iron impregnations point to a more humid climate with seasonality and weak tectonic activity. (iii) During the third phase between 4.5 and 2.0 Ma delta plain and nearshore deposits with frequent ferrugineous impregnations and rich mollusc associations occurred, indicating a humid period with lake-level highstands and accelerated subsidence. (iv) During the final sedimentary interval between 2.0 and 1.5 Ma gravel units reoccurred with less iron-but more carbonate and gypsum impregnations, and arkosic sandstones. This phase recorded a general aridisation trend most probably caused by the upcoming rain barrier of the Rwenzori Mountains together with accelerated rift-flank uplift and strong subsidence of the rift floor. The results of this study are of particular importance for delineating key controls on sedimentation in the Albert Rift.

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East African rift system: offset, age and tectonic significance of the Tanganyika-Rukwa-Malawi intracontinental transcurrent fault zone

Cited by 96 publications

References 6 publications

A new vertebrate fauna from the Cretaceous Red Sandstone Group, Rukwa Rift Basin, Southwestern Tanzania

A new vertebrate fauna from the Cretaceous Red Sandstone Group, Rukwa Rift Basin, Southwestern Tanzania

Fault kinematics and tectonic stress in the seismically active Manyara–Dodoma Rift segment in Central Tanzania – Implications for the East African Rift

Middle Miocene to Pleistocene sedimentary record of rift evolution in the southern Albert Rift (Uganda)

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