When a cinder cone erupts over and over, it can evolve into a stratovolcano. Stratovolcanoes are cone-shaped volcanoes that build up from layer after layer of lava and ash, one eruption at a time.
The recent swarm of earthquakes is the most significant activity from the volcano since this eruption, IMO representatives said. Bárðarbunga is a stratovolcano — a type of cone-shaped volcano ...
Mount Spurr is an ice and snow-covered stratovolcano complex, meaning that it is a large, cone-shaped volcano formed by lava flows, pyroclastic deposits, mudflow deposits, and lava domes.