Chapter 5: Volcanoes and Other Igneous Activity

Concept #5 Quiz

Choose the best possible answer to the following questions about Key Concept 5 "Classification of igneous rock bodies."

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1. A __________ is a large, discordant body of intrusive igneous rock that represents a former magma chamber or reservoir.  

2. The structures that result from the emplacement of igneous material at depth are called __________.  


Match the intrusive igneous rock body/structure with the appropriate description. [Hint]

Using the pulldown boxes, match each item on the left to the corresponding item at right.

A. an extremely large body of intrusive igneous rock, perhaps composed of many different intrusions in one body
B. a subterranean body of intrusive igneous rock (shape and size unspecified)
C. tabular bodies formed when magma intrudes layered rocks parallel to the layers
D. a usually horizontal, lens-shaped mass that arches upward
E. tabular discordant (cross-cutting) bodies produced by injection of magma into fractures
F. formed as igneous rocks cool and develop shrinkage fractures in pillar-like fashion

4. Near the surface, upward movement of a magma body is accomplished by the host rock being incorporated into the magma during a process called __________.  


Identify the igneous feature indicated on the diagram by selecting the correct response.

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through G appear on an image associated with this question.

Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.

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