UNITA’ DIDATTICA SUI VULCANI (Prof. Daniele Baldissin) - PowerPoint PPT Presentation

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UNITA’ DIDATTICA SUI VULCANI (Prof. Daniele Baldissin). Che cos’è un vulcano?. Proprietà chimico-fisiche del magma. Proprietà chimico-fisiche del magma. Pahoehoe lava (Kilauea). Termine hawaiano: “ dove si può camminare a piedi nudi ”.

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UNITA’ DIDATTICA SUI VULCANI (Prof. Daniele Baldissin)

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Unita didattica sui vulcani prof daniele baldissin



(Prof. Daniele Baldissin)

Che cos un vulcano

Che cos’è un vulcano?

Propriet chimico fisiche del magma

Proprietà chimico-fisiche del magma

Propriet chimico fisiche del magma1

Proprietà chimico-fisiche del magma

Unita didattica sui vulcani prof daniele baldissin

Pahoehoe lava


Termine hawaiano: “dove si può camminare a piedi nudi”.

La lava solidifica in superficie mentre al di sotto continua a scorrere



Vulcano a scudo

Vulcano a scudo

Tipi di eruzione

Tipi di eruzione

Unita didattica sui vulcani prof daniele baldissin

  • Sulla superficie terrestre si trovano vulcani ovunque il materiale proveniente dal mantello riesce ad arrivare in superficie:

  • Dorsali medio oceaniche

  • Hot spot (punti caldi)

  • Zone di subduzione

Unita didattica sui vulcani prof daniele baldissin

Fasi esplosive dell’Etna

Pinatubo filippine

Pinatubo - Filippine

The 1991 eruption of Pinatubo volcano in the Philippines created a new caldera with an average diameter of 2.5 km. Caldera collapse, which lowered the height of the volcano about 300 m, occurred following the ejection of nearly 10 cu km of tephra in one of the world's largest eruptions of the 20th century. This 1994 view from the NW shows a lake filling the caldera floor and two small islands from a partially submerged lava dome that was erupted in 1992.

Pinatubo filippine fumarole

Pinatubo – Filippine(Fumarole)

Fuji giappone

Fuji - Giappone

Winter snows cover the slopes of Mount Fuji, Japan's highest and most renowned volcano. A 700-m-wide crater caps the 3776-m-high stratovolcano. The modern symmetrical cone is constructed over a group of overlapping volcanoes, a remnant of which, Hoei-san, forms the knob halfway down the SE (left) flank. The diagonal line at the lower right is a toll road that extends to timberline on the north flank. Historical eruptions have been recorded since the 8th century, the latest in 1707.

Darwin galapagos

Darwin - Galapagos

Etna italia

Etna - Italia

Stratovulcano – Vulcano più alto d’Europa (Altezza: 3350 m)

Barcena messico

Barcena - Messico

Tolbachik kamchatka

Tolbachik - Kamchatka

Vulcani in giappone taiwan

Vulcani in Giappone, Taiwan

Hawaii e pacifico

Hawaii e pacifico

Europa e mediterraneo

Europa e Mediterraneo

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