Geologic Time Flashcards by Miyah Mioko Yasu | Brainscape

Q

What is an ordered arrangement of rock layers that is based on the relative ages of the rocks?

A

Geologic Column

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Q

What is it called when eras are divided into shorter time units?

A

Periods

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Q

What is the further divided time units that periods are split into called?

A

Epochs

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