Ora Caldera

The Ora Caldera is a Permian supervolcano in the Southern Alps of northern Italy.[1] This 42 km (26 mi) wide and 40 km (25 mi) long caldera was formed by a supereruption 277–274 million years ago that produced more than 1,000 km3 (240 cu mi) of rhyodacitic-rhyolitic ignimbrite.[1][2][3] The ignimbrite from this eruption forms the 10 to 1,350 m (33 to 4,429 ft) thick Ora Formation, which represents the youngest eruptive unit of the Athesian Volcanic Group.[1][3]

See also

References
  1. "The eruption, pyroclastic flow behaviour, and caldera in-filling processes of the extremely large volume (> 1290 km3), intra- to extra-caldera, Permian Ora (Ignimbrite) Formation, Southern Alps, Italy". Retrieved 2022-06-29.
  2. "The eruption, pyroclastic flow behaviour, and caldera infilling processes of the large volume (>1000 km3), Permian Ora (Ignimbrite) Formation (Italy)". Retrieved 2022-06-29.
  3. "Ora Caldera". Retrieved 2022-06-29.

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