Publication Date:
2020-02-24
Description:
A multidisciplinary geological and compositional
investigation allowed us to reconstruct the occurrence of
flank eruptions on the lower NE flank of Stromboli volcano
since 15 ka. The oldest flank eruption recognised is Roisa,
which occurred at ~15 ka during the Vancori period, and
has transitional compositional characteristics between the
Vancori and Neostromboli phases. Roisa was followed by
the San Vincenzo eruption that took place at ~12 ka during
the early stage of Neostromboli period. The eruptive fissure
of San Vincenzo gave rise to a large scoria cone located
below the village of Stromboli, and generated a lava flow,
most of which lies below sea level. Most of the flank
eruptions outside the barren Sciara del Fuoco occurred in a
short time, between ~9 and 7 ka during the Neostromboli
period, when six eruptive events produced scoria cones,
spatter ramparts and lava flows. The Neostromboli products
belong to a potassic series (KS), and cluster in two
differently evolved groups. After an eruptive pause of
~5,000 years, the most recent flank eruption involving the
NE sector of the island occurred during the Recent
Stromboli period with the formation of the large, highly K
calc-alkaline lava flow field, named San Bartolo. The trend
of eruptive fissures since 15 ka ranges from N30°E to N55°
E, and corresponds to the magma intrusions radiating from
the main feeding system of the volcano.
Description:
The mapping of Stromboli was supported by a
grant to S. Calvari (Project V2/01, 2005–2007, funded by the Istituto
Nazionale di Geofisica e Vulcanologia and by the Italian Civil
Protection). This work was partly supported by INGV through a research
grant financed byMIUR-FIRB to G. Norini.We wish to thank the former
Director of INGV-Sezione di Catania, A. Bonaccorso, for making
additional funds available for field trip and datings.
Description:
Published
Description:
101-112
Description:
3.5. Geologia e storia dei vulcani ed evoluzione dei magmi
Description:
JCR Journal
Description:
restricted
Keywords:
Stromboli
;
flank fissures
;
Stratigraphy
;
Neostromboli
;
Bulk rock composition
;
eruptive fissures
;
04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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