A kinematic model for the East African Rift

Details A kinematic model for the East African Rift A kinematic model for the East African Rift

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3505304s&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 5, CiteID L05304

Physics

20

Tectonophysics: Rheology: Crust And Lithosphere (8031), Geodesy And Gravity: Tectonic Deformation (6924), Tectonophysics: Continental Tectonics: Extensional (0905), Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242)

Scientific paper

The kinematics of the East African Rift (EAR) is the least well-known of all major plate boundaries. Here, we show that present-day data (a GPS+DORIS geodetic solution and earthquake slip vectors) are consistent with 3.2 Myr-average spreading rates and transform-fault azimuths along the Southwest Indian Ridge and support a kinematic model that includes three subplates (Victoria, Rovuma, and Lwandle) between Nubia and Somalia. Continental rifting in the EAR appears to involve localized strain along narrow rift structures that isolate large lithospheric blocks.

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