Concept information
Terme préférentiel
Caldeira
Définition
- A caldera is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is lost. The ground surface then collapses downward into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). (Adapted from: https://en.wikipedia.org/wiki/Caldera)
Concept générique
Synonyme(s)
- caldera
Traductions
-
français
URI
http://data.loterre.fr/ark:/67375/QX8-1KLB2TZL-6
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