Mount Vulture () is an

extinct volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ...

located north of the city

Potenza Potenza (, also , ; , Potentino dialect: ''Putenz'') is a ''comune'' in the Southern Italian region of Basilicata (former Lucania). Capital of the Province of Potenza and the Basilicata region, the city is the highest regional capital and one ...

in the

Basilicata it, Lucano (man) it, Lucana (woman) , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_title1 = , demographics1_info1 = ...

region (

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...

). As a prominent landmark it gave its name to the Vulture region, the most significant viticultural zone in Basilicata growing the DOC wine

Aglianico del Vulture Aglianico del Vulture and Aglianico del Vulture Superiore are Italian red wines based on the Aglianico grape and produced in the Vulture area of Basilicata. Located on volcanic soils derived from nearby Mount Vulture, it was awarded ''Denomina ...

. With a height of , it is unique amongst large Italian volcanoes due to its location east of the Apennine mountain range. At the summit is a

caldera A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is ...

, known as Valle dei Grigi, whose precise origins are disputed.

Volcanic history

The earliest eruptions of the volcano occurred around one million years ago, explosive activity producing

ignimbrite Ignimbrite is a type of volcanic rock, consisting of hardened tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly from a volcano, driven by being denser than the surro ...

. The explosive eruption phase finished around 830,000 years before present, when the nature of the activity changed to a mix of pyroclastic and effusive,

lava Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or ...

eruptions which built up the mountain and which have been dated to around 500,000 years ago. One of the explanations advanced for the Valle dei Grigi is that it is the result of the collapse of a sector of the mountain, as occurred during the 1980 eruption of Mount St. Helens and the 1792 eruption of Mount Unzen. The most recent phase involved further lava flows and the growth of

lava dome In volcanology, a lava dome is a circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions ...

s in the Valle dei Grigi, including the formation of two calderas. The most recent activity is thought to have been phreatomagmatic explosions around 40 ka ago which produced

maar A maar is a broad, low-relief volcanic crater caused by a phreatomagmatic eruption (an explosion which occurs when groundwater comes into contact with hot lava or magma). A maar characteristically fills with water to form a relatively shallo ...

s and small cold surges (pyroclastic surges cooler than 100 °C).

External links

*
Mount Vulture volcano, Italy
" ''Italy's Volcanoes: The Cradle of Volcanology'', website by Boris Behncke *

Volcanic history

See also

External links

Further reading