caldera
Volcanoes don't not exactly "close up" but either get clogs up when the rising magma cools or collapse. When the volcanoes collapse it forms a caldera. These calderas can fill with water making a lake.
caldera
That term is 'calderas'
caldera
a collapse earthquake is formed by whatever makes the rest of the volcanoes form...
if your talking about after an eruption, it can look the same or change significantly like Mt St Helens, the whole north face was blasted away and Krakatoa completely destroyed itself some volcanoes collapse in, and the magma chamber is emptied and compressed... forming a caldera, which can be extremely explosive however, most volcanoes remain looking the same
if your talking about after an eruption, it can look the same or change significantly like Mt St Helens, the whole north face was blasted away and Krakatoa completely destroyed itself some volcanoes collapse in, and the magma chamber is emptied and compressed... forming a caldera, which can be extremely explosive however, most volcanoes remain looking the same
When a volcano collapses on itself a caldera is then formed.
These are called composhit volcanoes or stratovolcanoes.
a strong gravitational force which means that the star will collapse in on itself
iceland is a belt of volcanoes/hotspots along the mid ocean ridge, it isn't just mostly volcanoes, it is a volcano itself
It forms a 'caldera'.