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Mamma
Etna's countless children |
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Among
the numerous pyroclastic cones that lie on the middle to lower southern
and southeastern flanks of Mount Etna, the conspicuous twin-peaked cone
of Monti Rossi immediately next to the town of Nicolosi is the largest
and youngest. It was built by intense explosive activity during the devastating
1669 eruption, which also deposited many
meters of pyroclastics over a wide area around the cone and caused widespread
ash falls that probably were much more severe than those experienced by
the local population during the 2002-2003 eruption. When the eruption
finally ended after four months of inferno, a huge new mountain stood
where previously there had been a small, older pyroclastic cone. A vast
area around it had been transformed into wasteland, 15 towns and villages
had been buried under lava and several others seriously affected by heavy
tephra falls, the city of Catania had suffered considerable damage in
its western part, its harbor had been filled by lava, and enormous quantities
of precious fertile land were destined to lie barren for centuries. With
this balance (which, fortunately, did not include any human fatalities),
the people living in the area easily found a name for the new mountain
that had spread all that devastation: Monte della Ruina (mountain of destruction).
This was the name originally given to what later was re-named Monti Rossi
- which could either refer to the reddish color of the scoriae making
up the cone, or be a local corruption of "Monti Grossi", which
means "Big Mountains". The application of the plural form of
the name is due to the two prominent peaks at the summit of the cone,
which are nothing else than the two high points on the eastern and western
rims of its complex summit crater, which has a N-S diameter of nearly
400 m. This crater contains a large central, a smaller northern and a
very small southern vents, the largest of which has a diameter of 320
m with its floor lying 100 m below the high western rim (945 m high).
The eastern crater rim is about 15 m lower than the western rim, and the
total height of the cone above its southern base is more than 200 m, making
this one of the largest of Etna's flank cones, and the largest formed
in historical time. Deep notches lie in the northern and southern crater
rims, and a trench-shaped depression extends from the latter on the south
flank of the cone. Lava was presumably emitted from the lower end of this
trench, but there is some evidence that further effusive vents lay further
south, on the south base of the nearby and older Mompilieri. |
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Copyright © Boris Behncke, "Italy's Volcanoes: The Cradle of Volcanology" |
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Page set up on 14 March 2004 |