Mantle upwelling and initiation of rift segmentation beneath the Afar Depression - Hammond,JOS; Kendall,J-M; Stuart,GW; Ebinger,CJ; Bastow,ID; Keir,D; Ayele,A; Belachew,M; Goitom,B; Ogubazghi,G; Wright,TJ (GEOLOGY, 2013)