Ultramafic Lava Flows Are Relatively Uncommon.Why Is That

question 37

Multiple Choice

Ultramafic lava flows are relatively uncommon.Why is that?

• A)They are rarely generated in the mantle.
• B)They have a high melting point and the crustal temperature is too low.
• C)They are high density and therefore do not rise in the mantle.
• D)They have high viscosity like felsic melts.

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