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43. What type of metamorphic feature is shown in this<br />
photograph?<br />
a) cleavage in slate<br />
b) schistosity<br />
c) hornfels<br />
d) foliation in banded gneiss<br />
e) thrust fault<br />
44. Which of the following matches a sedimentary rock with a possible metamorphic<br />
equivalent?<br />
a) sandstone – greenstone<br />
b) basalt – marble<br />
c) limestone – quartzite<br />
d) shale – slate<br />
e) diatomite – diamond<br />
45. What is true about contact metamorphism?<br />
a) It always involves a magma<br />
b) It generally takes place in the crust<br />
c) It frequently produces unfoliated rocks<br />
d) It may occur at very high temperatures<br />
e) All of the above are correct<br />
46. In what environments does high pressure/low temperature metamorphism occur?<br />
a) near magma but at shallow levels<br />
b) near magma but at deep levels<br />
c) under normal conditions of burial and heating<br />
d) in a subduction zone or accretionary prism<br />
e) none of these<br />
47. What happens when a glacier retreats?<br />
a) ice near the toe of the glacier actually moves uphill<br />
b) melting occurs only above the line and sublimation occurs only below the line<br />
c) ice melts faster than it is replaced by downhill flow<br />
d) crevasses form above the equilibrium line; they fill below the equilibrium line<br />
e) icebergs form and sea level drops
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