The figure below shows mafic magma as it meets the seafloor,which cools to form an igneous rock called ________.
A)pegmatite
B)pillow basalt
C)laccolith
D)pluton

Question

The figure below shows mafic magma as it meets the seafloor,which cools to form an igneous rock called ________. 
A)pegmatite 
B)pillow basalt 
C)laccolith 
D)pluton

Quizplus · Accepted Answer

Mafic magma that cools rapidly as it meets the seafloor forms a pillow-like structure called pillow basalt. Pegmatite is a coarse-grained igneous rock, laccolith is a concave pluton and pluton is a large intrusive body of igneous rock.

The Figure Below Shows Mafic Magma as It Meets the Seafloor,which