A mineral's resistance to abrasion is called ____
A)toughness
B)rigidity
C)hardness
D)strength
E)resilience
C
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Tar sands
a. are principal sources of conventional crude oil b. contain large supplies of heavy oils c. constitute a small but cheap supply of crude oil d. are usable only for aviation fuel e. are predominantly located in Canada
The sea cave in this photograph formed by
A) erosion of a promontory by waves.
B) erosion by blowing beach sand.
C) removal of rocks by giant lobsters.
D) a rapid drop in sea level.
Which of the following scenarios would best indicate that a thrust fault is present at a location?
A) The hanging wall of the fault has slipped down. B) Two parts of the same rock have been horizontally displaced by 20 feet. C) Cambrian-aged rocks have been shoved on top of Jurassic-aged rocks. D) The crust has lengthened, allowing a graben to slip down and create a pull-apart basin.
The main way new oceanic crust is created is by
A. eruption of lavas and solidification of magmas at depth. B. continents that subside below sea level. C. sediment scraped off a subducting slab. D. magmas along an ocean-continent convergent boundary. E. continental rifting, before the continents separate.