Geology Quiz: Part 10

What is the main component of both Granoblastic rocks and Marbles?

• Quartz

• Feldspar

• Calcite

• Gypsum

What type of rock is Fossiliferous Limestone?

• Sedimentary rock

• Igneous rock

• Volcanic rock

• Metamorphic rock

What causes the calcite crystals in marbles to become bigger?

• Increase in pressure

• Increase in temperature

• Decrease in pressure

• Decrease in temperature

What are Porphyroblasts in metamorphic rocks?

• Large crystals surrounded by a fine-grained matrix

• Small crystals surrounded by a fine-grained matrix

• Minerals formed due to contact metamorphism

• Newly formed metamorphic minerals

Which type of metamorphism is more likely to be preserved in the continental interior?

• Regional metamorphism

• Contact metamorphism

• Shock metamorphism

• Burial metamorphism

What type of metamorphism occurs around intruding plutons at a divergent plate boundary?

• Burial metamorphism

• Shock metamorphism

• Contact metamorphism

• Regional metamorphism

What type of metamorphism occurs at a convergent plate boundary due to subduction volcanism?

• High-pressure metamorphism

• Contact metamorphism

• Ultra-high pressure metamorphism

• Regional metamorphism

What is the distinctive history of changing temperature and pressure through time reflected in the texture and mineralogy of each metamorphic rock?

• Metamorphic grade

• P-T Path

• Geothermal gradient

• Tectonic transport rate

What does the prograde path in a P-T path indicate?

• Decrease in pressure and increase in temperature

• Decrease in pressure and temperature

• Increase in pressure and temperature

• Increase in pressure and decrease in temperature

What do the different P-T paths of rocks formed in different plate tectonic settings indicate?

• Differences in rock texture

• Differences in rock color

• Differences in mineral composition

• Differences in geothermal gradients