Answer | Crossword Clue |
---|---|
peridotite | an ultramafic igneous rock, the major constituent of the mantle |
peridotites | PERIDOTITE, an ultramafic igneous rock, the major constituent of the mantle |
ophiolite | An igneous rock consisting largely of serpentine, believed to have been formed from the submarine eruption of oceanic crustal and upper mantle material |