The Colli Albani volcano has been active since c. 600 ka and is presently quiescent. Rock stratigraphy indicates that the activity of the volcano has undergone major changes in terms of eruption style, average eruption rate and location of active vents. The chemistry of the Colli Albani products is remarkably mafic, K-rich and silica undersaturated. Nevertheless, the volcano has experienced all types of eruption styles, from plinian explosive paroxysms, to milder strombolian and hawaiian eruptions, to effusive, including large- and small-scale phreatomagmatism. The first period of activity of the volcano is termed the ‘Vulcano Laziale’ period, and lasted from c. 600 ka to c. 355 ka. During this period, the volcanism was predominantly explosive, with an average eruption rate of 1 km3 ka21. At least seven intermediate- to large-volume ignimbrites (VEI 5 – 7) were erupted and emplaced over an area larger than 1600 km2, forming an extensive ignimbrite shield around the central, continuously forming c. 8
Giordano, G., the CARG, T. (2010). Stratigraphy and volcano-tectonic structures of the Colli Albani volcanic field. In G.G. Funiciello R (a cura di), The Colli Albani Volcano (pp. 43-97).
Stratigraphy and volcano-tectonic structures of the Colli Albani volcanic field
GIORDANO, Guido;
2010-01-01
Abstract
The Colli Albani volcano has been active since c. 600 ka and is presently quiescent. Rock stratigraphy indicates that the activity of the volcano has undergone major changes in terms of eruption style, average eruption rate and location of active vents. The chemistry of the Colli Albani products is remarkably mafic, K-rich and silica undersaturated. Nevertheless, the volcano has experienced all types of eruption styles, from plinian explosive paroxysms, to milder strombolian and hawaiian eruptions, to effusive, including large- and small-scale phreatomagmatism. The first period of activity of the volcano is termed the ‘Vulcano Laziale’ period, and lasted from c. 600 ka to c. 355 ka. During this period, the volcanism was predominantly explosive, with an average eruption rate of 1 km3 ka21. At least seven intermediate- to large-volume ignimbrites (VEI 5 – 7) were erupted and emplaced over an area larger than 1600 km2, forming an extensive ignimbrite shield around the central, continuously forming c. 8I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
