Andesite

/ˈændəsaɪt/ noun

Definition

A gray volcanic rock of intermediate composition, commonly found in mountain ranges and volcanic regions around the world.

Etymology

Named after the Andes Mountains in South America, where this rock type is particularly abundant; the -ite suffix indicates it is a type of stone.

Kelly Says

Andesite is so common in the volcanic zones surrounding the Pacific Ocean that geologists call it the 'signature rock' of subduction zones—it's like Earth's way of signing its most active regions.

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