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Question
Which of the following deposition/erosion scenarios will develop when a groin is constructed on the beach?A) Erosion on upcurrent and downcurrent sides
B) Erosion on upcurrent side and deposition on downcurrent side
C) Deposition on upcurrent and downcurrent sides
D) Deposition on upcurrent side and erosion on downcurrent side
Answer
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Related questions
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A) Missing time.
B) Faults, fractures are younger than the rocks they cut through.
C) Sedimentary layers/lava
D) The oldest is on the bottom, the youngest on top.
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F) Chunks of weathered rock are older than the rock they are contained in.
1. Superposition
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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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By putting events in order, scientists can use the order to determine how long ago certain geologic events took place.
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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?
A) 50%
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B) An atom that has more or fewer electrons than it should
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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
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D) obsidian
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Which of the following is a metamorphic facies?
A) Kaolinite
B) Staurolite
C) Eclogite
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A) Limestone
B) Conglomerate
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A) 0 km
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What kind of metamorphism will occur if the environmental conditions are 400C and 5 kilobars?
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B) Contact
C) Regional
D) Subduction zone