Where the Andes don’t have volcanoes
There are any between Southern Ecuador and Central Peru – this is the most plausible explanation. The usual condition for what a volcano breaks out or erupts is under the Earth crus t – the mantle (the second layer going to the core), that is basically melted rock or magma , find weak zones at the crust where it can emerge due to the high pressure expanding the liquid and gas fluids as well. This can happen in places where the crust is literally cracked because of subduction or embedding of a tectonic plate beneath another. The phenomenon causes so much friction that melts all the matter, so this tends to seek where to emerge by. If it gets, it goes up until reaching the surface taking out through a new way or a previously open one. A volcanic eruption happens so. In case of the Andes, although Nazca Plate subducts under the South American Plate, it doesn’t do like an only lineal block but at two contact points: The first, according to ...