The mantle transition zone beneath the Afar Depression and adjacent regions : implications for mantle plumes and hydration

S U M M A R Y The Afar Depression and its adjacent areas are underlain by an upper mantle marked by some of the world’s largest negative velocity anomalies, which are frequently attributed to the thermal influences of a lower-mantle plume. In spite of numerous studies, however, the existence of a plume beneath the area remains enigmatic, partially due to… (More)