1) What type of volcano is most likely to form when magma is high in silica? Would cinder cone or composite volcano be the most likely one when magma is high in silica, or both types of volcanoes are equally possible? 2) How quickly can a volcano form? 3) "There are 2 major volcanic belts: circum-Pacific belt and Mediterranean belt. About 20% of all active volcanoes are in the Mediterranean belt" (quote) Is Mediterranean belt the same as the Eurasian-Melanesian mountain belt, or is it just including the volcanoes along the Mediterranean area (not including the Himalayas? The mountains near the Mediterranean are the Alps mountains, but are they volcanoes? If not, where are the 20% of volcanoes near there? Why are there volcanoes in Italy (e.g. Vesuvius)? Does that mean that the Alps are volcanoes? Would anyone like to share your knowledge about volcanoes? I appreciate for your time! Please Register or Log in to view the hidden image!