During Fractional Crystallization of a Magma Body,the First Mineral That

question 33

Multiple Choice

During fractional crystallization of a magma body,the first mineral that is expected to crystallize from the magma will be

• A) identical in chemical composition to the magma.
• B) more mafic than the magma.
• C) more felsic than the magma.
• D) The composition of the mineral is not predictable.

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Definitions:

Sediment

Particles of rock, mineral, or organic material deposited by water, wind, or ice.

Vertical Crack

A fracture or break in rock extending in an up-and-down direction.

Fault Scarp

A steep slope or cliff formed by the movement of a fault during an earthquake, indicating the relative displacement of the Earth's surface.

Topography

The arrangement of natural and artificial physical features of an area, including its relief, and the positions of streams, hills, and valleys.