Although much is known about the interaction of faulting and sedimentation within the basins of active segmented continental rift systems, little is known about these processes within the interaction zones of varying geometries that separate the young interacting segments. We address this problem by exploring the non-volcanic rift interaction zones (RIZ) along the humid, magma-poor juvenile western branch of EAGE KOLAWOLE Et AL. F I G U R E 1Cartoon illustrating the growth of propagating rift segments along active continental rift systems (updated and modified after Nelson et al., 1992). Note that this cartoon only features collinear and underlapping parallel rift segments. For each zone of rift segment interaction, the cartoon illustrates the pre-and post-linkage geometries of the rift segments. Also, note that cartoon represents rift segmentation and interaction at the early stages (stretching stage) of continental rifting F I G U R E 4 Eastern Africa rift basins and the major rift interaction zones. (a) Map of eastern Africa showing the different segments of the Cenozoic Western Branch (WBEARS) of the East African Rift System (and some of the Eastern branch segments). Also shown are the Mesozoic rift segments that are reactivated (e.g. LR, RR, SRZ) and unreactivated (e.g. LmR, MnR, RuR, ZR) during the current phase of Cenozoic extension.