Ora Caldera

Source: Wikipedia, the free encyclopedia.

The Ora Caldera is a

rhyolitic ignimbrite.[1][2][3] The ignimbrite from this eruption forms the 10-to-1,350-metre-thick (33 to 4,429 ft) Ora Formation, which represents the youngest eruptive unit of the Athesian Volcanic Group.[1][3]

See also

References