Fig. 2
From: Aborted propagation of the Ethiopian rift caused by linkage with the Kenyan rift
Geology of the Ririba rift. a Geological map superimposed on a SRTM (Nasa Shuttle Radar Topography Mission) digital elevation model. White dots labelled ‘MDZ + number’ indicate rock samples. Black square indicates the area illustrated in Fig. 3. b Simplified structural cross-sections across the Segen Basin (A-B) and the Ririba rift (C-D, E-F). c Rose diagram illustrating plots of weighted fault azimuths. The weighting factor for each fault is the ratio between the length and the minimum length of the whole data set, such that long faults have higher ratio (weight) than short ones. The frequency of the azimuth of a fault directly relates to this ratio, the longer the fault the higher its frequency. d Rose diagram illustrating plots of the elongation of volcanic vents; the dashed black line indicates the overall elongation of the Dilo-Dukana volcanic field
