Solimana may be the source of the Lomas pyroclastic flow deposit and the Upper Sencca ignimbrite. The Upper Sencca ignimbrite was erupted between 1.76 and 2.09 million years ago and filled several valleys with of material, while the Lomas deposit was erupted between 1.56 and 1.26 million years ago. Solimana still features fumarolic activity within the caldera.