Intrusive Rocks (Intrusive Vulcanicity) PDF

Describe the rock cycle and the types of processes that lead to the formation of igneous, sedimentary, and metamorphic rocks, and explain why there is an active rock cycle on Earth.

• Explain the concept of partial melting and describe the geological processes that lead to melting.

• Describe, in general terms, the range of chemical compositions of magmas.

• Discuss the processes that take place during the cooling and crystallization of magma, and the typical order of crystallization according to the Bowen reaction series.

• Explain how magma composition can be changed by fractional crystallization and partial melting of the surrounding rocks.

• Apply the criteria for igneous rock classification based on mineral proportions.

• Describe the origins of phaneritic, porphyritic, and pegmatitic rock textures.

• Identify plutons on the basis of their morphology and their relationships to the surrounding

rocks.

• Explain the origin of a chilled margin.

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