Caldera formation occurs when large amounts of magma are rapidly removed from subsurface reservoirs. The size and shape of calderas depend on the ratio between the lateral size of the magma chamber and its depth, and on the rate of drainage. The amount of erupted magma is controlled by the magma chamber volume, the solubility of volatiles in the magma, the depth of the reservoir, and the strength of the surrounding rocks. All these factors provide an almost continuous spectrum of calderas of diVerent sizes and shape, with erupted volumes ranging between a few tenths of cubic kilometer to thousands of cubic kilometers.
Scandone, R., Giacomelli, L., FATTORI SPERANZA, F. (2005). Factors influencing the formation of Calderas. ACTA VULCANOLOGICA, 17, 39-46.
Factors influencing the formation of Calderas
SCANDONE, Roberto;
2005-01-01
Abstract
Caldera formation occurs when large amounts of magma are rapidly removed from subsurface reservoirs. The size and shape of calderas depend on the ratio between the lateral size of the magma chamber and its depth, and on the rate of drainage. The amount of erupted magma is controlled by the magma chamber volume, the solubility of volatiles in the magma, the depth of the reservoir, and the strength of the surrounding rocks. All these factors provide an almost continuous spectrum of calderas of diVerent sizes and shape, with erupted volumes ranging between a few tenths of cubic kilometer to thousands of cubic kilometers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
