What is different between quartz and quartzite's formation processes?
A) Quartz is metamorphosed into quartzite.
B) Quartzite is formed in volcanoes.
C) Quartzite is heavily foliated, a result of forming deep within the earth.
D) Chemicals change quartzite's makeup extensively.
Answer: A
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Volcano A erupts rocks with SiO2 content ranging from 49% to 52% whereas volcano B, 100km away, erupts materials with SiO2 content of 62-68%. Which statement best characterizes these two volcanos?
A) Volcano A is probably a shield volcano with typically quiescent eruptions, whereas Volcano B is likely a stratovolcano characterized by violent, explosive eruptions. B) Both volcanos are violent, explosive volcanos that spread ash continent wide. C) Volcano A is likely to be a supervolcano with violent eruptions, whereas volcano B is probably a shield volcano with quiescent eruptions. D) Both volcanos are shield type volcanos that are characterized by quiescent eruptions.
Two layers of sediment representing one year of deposition in a lake, are called a varve.
Answer the following statement true (T) or false (F)
A horizontal conduit that allows lava to flow from a volcanic vent is called a ________
A) sill B) dike C) pillow lava D) lava tube
Which part of Central Asia underwent the Soviet "Virgin Lands Campaign" of the 1950s?
A) central Kyrgyzstan B) northwestern Tibet C) southern Uzbekistan D) northern Kazakhstan E) Azerbaijan