Exam 4: Igneous Rocks and Intrusive Igneous Activity

Intrusive igneous (plutonic)rocks:

The lowest temperature mineral on Bowen's reaction series is olivine.

Erupting lavas generally have a temperature in the range of 700° to 1200°F.

What are the effects of magma mixing on magma composition?

What are pegmatites,and how do they form?

____________________ is the first ferromagnesian mineral to crystallize from a mafic magma.

Bowen's reaction series explains why Si-rich minerals are the last to crystallize from a magma.

The processes of crystal settling and assimilation have been shown to produce large quantities of felsic magma from mafic magmas.

Any individual volcano always erupts magmas of the same type.

At a linear volcanic chain,such as the Hawaiian Islands,the rocks are oldest over the hot spot and become progressively younger away from the hot spot.