Caldera collapse and tectonics along the Main Ethiopian Rift: reviewing possible relationships

The Main Ethiopian Rift (MER) represents an area where volcanism and tectonics interact to create closely linked volcano-tectonic features. This linkage is paramount in the axial portion of rift, magmatic segments localize several large peralkaline eruptive centres. Many them evolved into caldera collapse (the best preserved which are younger than <1Ma) generating ignimbrites registering interaction between magmatism along MER. In this work we review structure main collapsed calderas MER, summarize relationships proposed literature explaining their structural evolution. By doing this, infer that had a strong influence controlling elongation majority examined calderas. control was induced by reactivation inherited crustal fabrics or stretching magma reservoirs under MER regional stress field.