GEOPHYSICAL MONOGRAPH SERIES, VOL. 182, PP. 19-37, 2008
Volcanology and magma geochemistry of the present-day activity: Constraints on the feeding system
Stromboli volcano is famous in the scientific literature for its persistent state of activity, which began about 1500 years
ago and consists of continuous degassing and mild intermittent explosions (normal Strombolian activity). Rare lava emissions
and sporadic more violent explosive episodes (paroxysms) also occur. Since its formation, the present-day activity has been
dominated by the emission of two basaltic magmas, differing chiefly in their crystal and volatile contents, whose characteristics
have remained constant until now. The normal Strombolian activity and lava effusions are fed by a crystal-rich, degassed magma,
stored within the uppermost part of the plumbing system, whereas highly vesicular, crystal-poor light-colored pumices are
produced during paroxysms testifying to the ascent of volatile-rich magma batches from deeper portions of the magmatic system.
Mineralogical, geochemical, and isotopic data, together with data on the volatile contents of magmas, are presented here with
the aim of discussing (1) the relationships between the different magma batches erupted at Stromboli, (2) the mechanisms of
their crystallization and transfer, (3) the plumbing system and triggering mechanisms of Strombolian eruptions.
Citation: Bertagnini, A.,