Exercise
Correlation of Rock Layers Across Distances
Learn how geologists correlate matching rock layers and fossil assemblages across widespread geographic distances.
Questions
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MultiChoice
What is rock layer correlation?
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MultiChoice
How can geologists match rock strata across wide ocean basins where physical connections are missing?
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MultiChoice
What key method is used to correlate rocks when physical rock appearance differs but age is identical?
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MultiChoice
What is a 'marker bed' or 'key bed' in rock layer correlation?
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MultiChoice
Why is a volcanic ash layer an exceptional marker bed for correlating rock strata across continents?
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MultiChoice
What principle states that fossilized organisms succeed one another in a definite, recognizable order?
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MultiChoice
If Site A and Site B contain identical sequences of index fossils in three stacked layers, what is concluded?
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MultiChoice
What challenge arises when trying to correlate rock layers across vast continental distances?
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MultiChoice
Which English surveyor created the first geological map using fossil succession correlation?
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MultiChoice
Why are key beds like iridium clay layers useful in global relative dating?
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MultiChoice
What catastrophic global event produces an ideal widespread marker bed worldwide?
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MultiChoice
How does correlating rock layers worldwide benefit Earth scientists?