“…Currently, the overall subsidence and extension in the Northern Kenya Rift reflects deformation processes within the inner graben; this area corresponds to the youngest manifestation of extensional faulting that transitioned from a pronounced asymmetry with major faults associated with an east-dipping master fault in the west and subsequently established antithetic, west-dipping normal faults to the formation of the magmatically and tectonically inner graben (Bosworth & Maurin, 1993;Dunkley et al, 1993;Saneyoshi et al, 2006). This transition to a more symmetric rift and localized subsidence and extension can be observed in all sectors of the Kenya Rift (e.g., Baker et al, 1988;Bosworth, 1987;Hautot et al, 2000;Rosendahl, 1987;Strecker et al, 1990), a sequence of events that is also predicted by numerical models of strain localization (e.g., Richter et al, 2021). Geological mapping of the major east-dipping normal faults in the Northern Kenya Rift (i.e., the Sattima and Kaimo faults) documents that despite their major offsets during the Tertiary, these structures are no longer tectonically active (e.g., Carney, 1972;Lippard, 1972;Mugisha et al, 1997).…”