Theory of accumulation

We have already seen that during moderate activity of the volcano there is an accumulation of eruptive masses, and the cone is gradually increasing: in this way in a very short time, recovered a significant loss, undergoes a peak during heavy eruptions. Part of the cone formed before our eyes, no different from the oldest parts of any material from which are built either by its location, so we may think that the entire cone was formed through the accumulation of eruptive products, starting from 1979. We do not have precise information about the eruption of the Somme in historic times, but we doubt that this semi-circular shaft that surrounds the cone of Vesuvius, is the residue of an ancient crater. Somma also consists of the piled masses of lava, volcanic ash, sand, slag, and the location of their finds many similarities with the inner cone. We do not find here a trace of rock that would not have connection with the eruptions, mass forming the Somme, are exactly as we see them on the undoubted cones accumulation. Hence, it is easy to imagine and method of formation of the Somme. As already stated, it is - an ancient crater, inside it has grown a new cone, which was concentrated and volcanic activity. Almost every new eruption of lava poured into atrio del Cavallo, and unless you happen terrible eruption, during which time will fall along with the top and the masses, cluttering the valley, then over time the latter will finally filled in, new products will accumulate over him, and Vesuvius will merge with the Somme in the same mountain, the valley that separates them now, replaced by a terrace, similar to the current Le drunk. Currently, nearly all geologists consider the Vesuvius and the Somme as a result of the accumulation of eruptive products, this view is usually spread to all the other volcanoes. Theory explaining the origin of the burning mountains so it is a way, is called the theory of accumulation, it is opposite to the theory of lifting, owned by Leopold von Buhu and Alexander Humboldt, and later taken to extremes Dufresnoy and Elie de Beaumont. Various proponents of this theory is sometimes gave her a wider, sometimes narrower sense, but they all recognize that during the eruption not only poured molten mass of the Earth's surface, but also lifted located around the rocks, the latter process, they attribute decisive significance in the formation of the relief volcanic areas. According to the theory of lifting education fire-breathing mountains starts swelling soils and rocks, lying on the surface. Sometimes, but according to some proponents of the theory very often, and this phenomenon is limited. Thus it is through and emerged trahitovye, basalt, etc. dome, which is not visible, and traces of the crater, volcanic ash, cinders, lava flows. Excellent examples of such formations can serve as a huge South American Andes Mountains trahitovye as, for example., Chimborazo, and the Puy de House in Central France, the vultures at Melfi in Italy and a large number of massive rock outcrops tretichnog age. In other cases, the swelling burst and form a ring mount, so-called "uplift craters. In the center of the latest gradually formed that crater, which directly delivers to the surface lava and loose products.