volcanic background
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volcanic

/vɒlˈkanɪk/

Meanings

noun

火山岩

A volcanic rock.

Examples :

"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."
埃尔斯米尔岛火山岩是加拿大努纳武特地区埃尔斯米尔岛北部基吉柯塔鲁克地区晚白垩世时期形成的一组火山和熔岩流。