Ultramafic lava flows were more common in the early history of the earth than now because
A)ultramafic melts were more common in the past.
B)Earth's crust was hotter in the past.
C)Earth's mantle was cooler in the past.
D)plate tectonics had not been initiated.

Question

Quizplus · Accepted Answer

The Answer of Ultramafic lava flows were more common in the early history of the earth than now because
A)ultramafic melts were more common in the past.
B)Earth's crust was hotter in the past.
C)Earth's mantle was cooler in the past.
D)plate tectonics had not been initiated.

Ultramafic Lava Flows Were More Common in the Early History