Fill-In-The Blanks for Plutonic and Volcanic Igneous Rocks - Chapters 3 and 4

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1. A coarse grained igneous rock has a texture.

2. Alkali feldspar (relative to plagioclase) forms at a temperature.

3. The continuous side of Bowen's reaction series involves the crystallization of .

4. The discontinuous side of Bowen's reaction series involves the crystallization of minerals rich in magnesium and .

5. The measure of resistance to flow of a liquid is its .

6. Oceanic crust is the rock type .

7. A discordant tabular pluton is a .

8. The fine grained equivalent of an diorite is a .

9. Andesites are the dominant igneous rock found at what plate boundary? .

10. Eruptions of andesite often produce a type of volcanic landform.

11. Volcanic rocks have crystals wich are too fine to be seen with the naked eye and are said to have a texture.

12. If an igneous rock has experiences two phases of cooling, one slowly at depthand a second more quickly on the surface, then it develops a texture.

13. As a magma cools -rich plagioclase reacts with the melt to form - rich plagioclase.

14. When magma solidifies in the subsurface, it forms a rock body called a

15. A tabular, discordant pluton is called a

16. A tabular, concordant pluton is called a

17. Devil's Tower, Wyoming, and Ship Rock, New Mexico are examples of volcanic
18. A tabular, discordant pluton is called a
19. A volcano which has not erupted in historic times but is expected to erupt again is said to be
20. A tabular, discordant pluton is called a whereas one wich will probably never erupt again is
21. A tabular, discordant pluton is called a

22. Basalts erupting underwater often produce a characteristic shape called

23. A forms when the top of a colcano collapses into an empty (or partially empty) magma chamber.

24. Volcanoes that are much wider than they are tall form from low visocsity flows and are called volcanoes.

25. Large, steeply sloping conical volcanoes composed of alternating layers of lava and pyroclastic debris are called volcanoes.

26. Small volcanoes composed of pyroclastic debris are called cones.

27. Temperatures increase at a rate of about degrees C/kilometer going downard into the continental crust.

28. The circumn-Pacific belt is a long belt of colcanoes located about zonesat convergent margins.

29. The Hawaiian Islands are located in the middle of the Pacific plate over a

30. Subduction zone volcanism is characterized by lavas of composition.

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