Volcanoes

Tuzgle stratovolcano, Argentina. Recent dark andesitic lava flows can be clearly seen on the slopes
Tuzgle stratovolcano, Argentina. Recent dark andesitic lava flows can be clearly seen on the slopes
Image Credit: MBG
Eruption of Lascar volcano, Chile
Eruption of Lascar volcano, Chile
Image Credit: MBG
Strombolian-type eruption with the development of lava flux and lava fountain, Hawaii
Strombolian-type eruption with the development of lava flux and lava fountain, Hawaii
Image Credit: MBG

Volcanic morphologies depend strongly on their chemistry and various other parameters such as viscosity, eruption type and geodynamic setting. The largest volcanic edifices are made by the huge shield volcanoes composing most of the islands of Hawaii or Galapagos, result of  hot-spot activity, or by large stratovolcanoes along active continental margins at convergent plate boundaries. Besides those large volcanic morphologies, there are also many other smaller forms, such as cinder, spatter, tuff and ash cones.