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Geosciences LibreTexts

14: Geologic Time

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  • Learning Outcomes

    After completing this chapter, you should be able to:

    • Apply basic geological principles to determine the relative ages of rocks.
    • Understand the importance and significance of unconformities.
    • Use isotopic data to estimate the numeric (absolute) age of a rock.
    • Explain why an understanding of geological time is critical to both geologists and the public in general.

    Thumbnail: “Rainbow Basin” (Public Domain; Mark Wilson, Department of Geology, The College of Wooster via Wikipedia)

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