A volcanic rock.
The Ellesmere Island Volcanics are a Late Cretaceous volcanic group of volcanoes and lava flows in the Qikiqtaaluk Region of northern Ellesmere Island, Nunavut, Canada.
Of or pertaining to a volcano or volcanoes
volcanic activity.
Produced by a volcano, or, more generally, by igneous agencies
Changed or affected by the heat of a volcano.
Reminiscent of a volcano; explosive, violent, full of suppressed anger, energy etc.