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Pantelleria

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Pantelleria

Pantelleria (Sicilian: Pantiddirìa), the ancient Cossyra, is an Italian island in the Strait of Sicily in the Mediterranean Sea, 100 km (62.1 mi) southwest of Sicily and just 60 km (37.3 mi) east of the Tunisian coast. Administratively Pantelleria is a comune belonging to the Sicilian province of Trapani. With an area of 83 km2 (32 sq mi), it is the largest volcanic satellite island of Sicily.

The island of Pantelleria is located above a drowned continental rift in the Strait of Sicily and has been the locus of intensive volcano-tectonic activity. The 15-km-long (9.3 mi) island is the emergent summit of a largely submarine edifice. Two large Pleistocene calderas dominate the island, the older of the two formed about 114,000 years ago and the younger, Cinque Denti caldera formed about 45,000 years ago. The eruption that formed the Cinque Denti caldera produced the distinctive Green Tuff deposit that covers much of the island, and is found across the Mediterranean, as far away as the island of Lesbos in the Aegean.Holocene eruptions have constructed pumice cones, lava domes, and short, blocky lava flows. Post Green Tuff activity constructed the cone of Monte Gibele, part of which was subsequently uplifted to form Montagna Grande. Several vents are located on three sides of the uplifted Montagna Grande block on the southeast side of the island. A submarine eruption in 1891 from a vent off the northwest coast is the only confirmed historical activity.

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