A phreatic volcanic eruption
A. only occurs at rift zones.
B. involves ash only.
C. results from groundwater that becomes steam upon magmatic heating.
D. is the same type of eruption as a nuée ardente.
Answer: C
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Compression cannot produce
A. reverse faults. B. normal faults. C. synclines. D. anticlines.
William Smith is usually credited with developing the principle of fossil succession. Indicate whether the statement is true or false
Oil shale deposits ________
A) have been too expensive to extract and use as energy resources B) contain organic kerogen which can be processed into petroleum C) can be pumped from underground reservoirs like conventional crude oil D) are only a tiny fraction of the U.S. and Canadian potential oil reserves E) are concentrated in the Middle East
Blowing sand eventually comes to rest ____________________ obstacles, which can be anything from a rock to a clump of vegetation
Fill in the blank with correct word.