Influence of pre-existing fabrics on fault kinematics and rift geometry of interacting segments: Analogue models based on the Albertine Rift (Uganda), Western Branch-East African Rift System

Aanyu, Kevin; Koehn, Daniel

doi:10.1016/j.jafrearsci.2010.10.003

Cited by 45 publications

(34 citation statements)

References 65 publications

(107 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3.6a, b). Relationship between the anisotropies in the pre-rift basement and the trends of the faults have been noted in many studies (Morley 1999b, c;Corti 2004;Morley et al 2004;Aanyu and Koehn 2011;Chattopadhyay and Chakra 2013). Rift zone geometries are also controlled by litho-layers and extension rates besides geomorphological processes (Ramirez-Arias et al 2012;Buiter 2014;Huismans et al 2014).…”

Section: Bearing On Rift Systemsmentioning

confidence: 87%

“…Corti 2004;Aanyu and Koehn 2011;Chattopadhyay and Chakra 2013; also see Holdsworth et al 2013), and lithospheric rheological contrasts (e.g. Corti 2004;Aanyu and Koehn 2011;Chattopadhyay and Chakra 2013; also see Holdsworth et al 2013), and lithospheric rheological contrasts (e.g.…”

Section: 1 General Aspectsmentioning

confidence: 99%

“…Review and comparison of passive rifts are available in Melankholina (2008), Melankholina and Suschevskaya (2008), Levell et al (2010) etc. Cloetingh et al 1995;references in Morley 1999b, c;Morley et al 2004;Bellahsen and Daniel 2005;Corti et al 2007;Aanyu and Koehn 2011;Bellahsen et al 2013;Cappelletti et al 2013;Manatschal et al 2015 etc.). How rifts get segmented, propagate discontinuously and evolve is decided by pre-existing structural features within the basement (e.g.…”

Section: 1 General Aspectsmentioning

confidence: 99%

See 2 more Smart Citations

Tectonic Inheritance in Continental Rifts and Passive Margins

Misra

Mukherjee

2015

SpringerBriefs in Earth Sciences

View full text Add to dashboard Cite

show abstract

Section: Bearing On Rift Systemsmentioning

confidence: 87%

Section: 1 General Aspectsmentioning

confidence: 99%

Section: 1 General Aspectsmentioning

confidence: 99%

See 1 more Smart Citation

Tectonic Inheritance in Continental Rifts and Passive Margins

Misra

Mukherjee

2015

SpringerBriefs in Earth Sciences

View full text Add to dashboard Cite

show abstract

“…Since the end of the Pan-African orogeny, the tectonic evolution of the African continent was dominated by rift processes (Delvaux 1991). Inherited Precambrian and early Palaeozoic basement fabrics have an important control on the later rifting events, like the Permo-Triassic to Jurassic Karoo rifting and the Neogene rifting of the EARS with the Albertine Rift in particular (Delvaux 2001;Macheyeki et al 2008;Aanyu and Koehn 2011).…”

Section: Basement Geologymentioning

confidence: 99%

“…Between Lake Albert and Lake Edward, the Rwenzori Mtns raise to more than 5 km asl (above sea level). This Precambrian metamorphic basement block is framed by two rift sub-segments, the southward propagating Lake Albert sub-segment and the northward propagating Lake Edward/ George sub-segment (Aanyu and Koehn 2011). Along their north-eastern side, the Rwenzoris are connected to the eastern rift shoulder forming a promontory (Fig.…”

Section: Albertine Rift: Western Branch East African Rift Systemmentioning

confidence: 99%

Long-term cooling history of the Albertine Rift: new evidence from the western rift shoulder, D.R. Congo

Bauer

Glasmacher

Ring

et al. 2015

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

show abstract

Hierarchical segmentation of the Malawi Rift: The influence of inherited lithospheric heterogeneity and kinematics in the evolution of continental rifts

et al. 2015

View full text Add to dashboard Cite

We used detailed analysis of Shuttle Radar Topography Mission-digital elevation model and observations from aeromagnetic data to examine the influence of inherited lithospheric heterogeneity and kinematics in the segmentation of largely amagmatic continental rifts. We focused on the Cenozoic Malawi Rift, which represents the southern extension of the Western Branch of the East African Rift System. This north trending rift traverses Precambrian and Paleozoic-Mesozoic structures of different orientations. We found that the rift can be hierarchically divided into first-order and second-order segments. In the first-order segmentation, we divided the rift into Northern, Central, and Southern sections. In its Northern Section, the rift follows Paleoproterozoic and Neoproterozoic terrains with structural grain that favored the localization of extension within well-developed border faults. The Central Section occurs within Mesoproterozoic-Neoproterozoic terrain with regional structures oblique to the rift extent. We propose that the lack of inherited lithospheric heterogeneity favoring extension localization resulted in the development of the rift in this section as a shallow graben with undeveloped border faults. In the Southern Section, Mesoproterozoic-Neoproterozoic rocks were reactivated and developed the border faults. In the second-order segmentation, only observed in the Northern Section, we divided the section into five segments that approximate four half-grabens/ asymmetrical grabens with alternating polarities. The change of polarity coincides with flip-over full-grabens occurring within overlap zones associated with~150 km long alternating border faults segments. The inherited lithospheric heterogeneity played the major role in facilitating the segmentation of the Malawi Rift during its opening resulting from extension. Key Points:• Segmentation of the Malawi Rift is studied using SRTM DEM and magnetic data • The rift is hierarchically divided into first-order and second-order segments • Lithospheric heterogeneity controls firstand second-order segmentation

show abstract

Influence of pre-existing fabrics on fault kinematics and rift geometry of interacting segments: Analogue models based on the Albertine Rift (Uganda), Western Branch-East African Rift System

Cited by 45 publications

References 65 publications

Tectonic Inheritance in Continental Rifts and Passive Margins

Tectonic Inheritance in Continental Rifts and Passive Margins

Long-term cooling history of the Albertine Rift: new evidence from the western rift shoulder, D.R. Congo

Hierarchical segmentation of the Malawi Rift: The influence of inherited lithospheric heterogeneity and kinematics in the evolution of continental rifts

Contact Info

Product

Resources

About