Definitions

1. noun

A type of volcanic rock that is a rare, high-temperature equivalent of andesite, typically found in ophiolite complexes.

“The geologist studied the unique properties of boninite in the ophiolite complex.”

2. noun

A type of basaltic rock that is characterized by its high magnesium content and low iron content.

“The mineralogist analyzed the chemical composition of the boninite sample.”