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|Authors: ||Carlino, S.*|
|Title: ||On the mechanics of caldera resurgence of Ischia Island (southern Italy)|
|Title of journal: ||Mechanisms of Activity and Unrest at large Calderas Geological Society ,London, Special Pubblications|
|Series/Report no.: ||Special Pubblications/269 (2006)|
|Publisher: ||Geological Society ,London|
|Issue Date: ||2006|
|Abstract: ||A model of caldera resurgence was applied to the Island of Ischia to explain uplift,
volcanic activity and tectonics on Mount Epomeo, as well as historical seismicity and slow
ground movements recorded for the past 2000 years. A two-dimensional mechanical model
was utilized for the crust, which was considered to be an elastic plate overlying a laccolith.
Geometric dimensions and mechanical parameters were constrained using geological,
geophysical and geochemical data.
We propose that a laccolith, with a diameter L of c. 10 km, and a depth of up to 1 km in the
centre of the island, triggered the caldera resurgence after the Mount Epomeo Green Tuff
eruption forming the caldera (55 000 a BP). A bending phase and a punched laccolith phase are
thought to have caused the observed deformations in the caldera. These processes control the
tectonics at the boundary of the Mount Epomeo resurgent structure, volcanic activity and
dynamics of the island.|
|Appears in Collections:||04.08.99. General or miscellaneous|
Papers Published / Papers in press
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