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Question
Select the choice below that best describes the role of volatiles in an ascending magma.A) Volatiles increase the rate of crystallization in intrusive structures.
B) Volatiles will force the magma to contract as it rises.
C) Volatiles will shatter surrounding rocks, making it easier for the magma to rise.
D) Volatiles will expand with decreasing pressure, then melt upward.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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B) Faults, fractures are younger than the rocks they cut through.
C) Sedimentary layers/lava
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F) Chunks of weathered rock are older than the rock they are contained in.
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5. Unconformities
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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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Carbon-14 dating is useful for paleontologists researching dinosaurs.
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In what era is the Jurassic period?
A) Precambrian
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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Which era are we currently in?
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
D) 13,000 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
D) 4.5 billion years
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You are an archaeologist researching artifacts left behind by Francisco Pizzaro's conquest of Peru in the 1530s. In order to confirm the authenticity of the leather artifacts, you are performing radiometric dating using an isotope pair that has a half-life of 250 years. In order for the artifacts to date back to the time of Pizzaro's conquest, approximately how much original radioactive isotope must be left in the artifacts?
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B) Matching up rocks of similar age in different regions
C) Putting events in order from first to last
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________ is the scientific study of fossils.
A) Quaternary geology
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C) Geomorphology
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A) basaltic
B) granitic
C) shale
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Q:
Which of the following is a metamorphic facies?
A) Kaolinite
B) Staurolite
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Q:
________ is a widespread type of metamorphism typically associated with mountain building.
A) Pyrometamorphism
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Generally speaking, how does the chemical composition of most metamorphic rocks compare to that of the parent rock?
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B) Quartzite
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Which of the following is the parent rock of quartzite?
A) Limestone
B) Conglomerate
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A) 0 km
B) 30 km
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What kind of metamorphism will occur if the environmental conditions are 400C and 5 kilobars?
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