Mafic magma at a temperature of 1200°C intrudes into felsic continental-crust rocks 15 km below the surface. Will the granite melt? If so, what will happen to the resulting magma? Use information presented in the chapter to support your answer

What will be an ideal response?


Figure 4.18 is useful for answering these questions. At 15 km below the surface, granite completely melts into granitic magma at about 705oC, which is much less than the temperature of the intruding mafic magma. However, this rising magma may not make it to the surface because water will escape as gas as the pressure decreases and this causes an increase in the melting temperature.

Environmental & Atmospheric Sciences

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Water rushing into an enclosed area because of the rise in sea level as a tide crest approaches is called ____

A) an ebb current B) a flood current C) slack water D) a neap tide

Environmental & Atmospheric Sciences

Factors that act to limit the growth of populations are collectively called

a. carrying capacity b. Death c. Emigration d. environmental resistance e. environmental capacity

Environmental & Atmospheric Sciences

What is an elastic material?

What will be an ideal response?

Environmental & Atmospheric Sciences

A mineral that is not a silicate is

A) feldspar. B) mica. C) calcite. D) quartz.

Environmental & Atmospheric Sciences