While the Ultramafic Rock, Peridotite, Comprises the Bulk of the Mantle

question 99

Multiple Choice

While the ultramafic rock, peridotite, comprises the bulk of the mantle, the earth hasn't been hot enough to make much ________ (its volcanic equivalent) since the Precambrian.

• A)andesite
• B)gabbro
• C)komatiite
• D)welded tuff

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