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Question
Why do mantle plumes tend to concentrate beneath supercontinents such as Pangaea?A) Concentrations of radioactive materials build up as continents assemble.
B) Partial melting from subduction concentrates large volumes of magma.
C) A large landmass acts as an insulating blanket to trap heat in the mantle.
D) Friction from converging landmasses heats up the mantle.
Answer
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Related questions
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B) Faults, fractures are younger than the rocks they cut through.
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A detrital sedimentary rock can be radiometrically dated because the clasts formed at the same time as the rock.
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B) Paleozoic
C) Mesozoic
D) Cenozoic
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What does "-zoic" in the eras of the geologic time scale refer to?
A) Life
B) Water
C) Rock
D) Fossilization
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A) Mesozoic
B) Precambrian
C) Paleozoic
D) Cenozoic
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What is the effective maximum range for carbon-14 dating?
A) 100,000 years
B) 70,000 years
C) 10,000 years
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What is the half-life of potassium-40?
A) 1.3 billion years
B) 704 million years
C) 14.1 billion years
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________ is the scientific study of fossils.
A) Quaternary geology
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C) Geomorphology
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Which of the following is a metamorphic facies?
A) Kaolinite
B) Staurolite
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