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Chemistry LibreTexts

Relative and Absolute Time 101

  • Page ID
  • To Do To Answer
    Read about Geologic Time
    • What is the estimated age of the Earth?
    • What evidence is there for this age?
    Read about the Relative Time Scale
    • What evidence do we have that the Earth has "diverse origins"?
    • Explain the principle originally proposed by James Hutton.
    • How did this principle become a major concept of relative time dating?
    Read about the Radiometric Time Scale
    • How is radioactive decay used to determine absolute time?
    Relative and Absolute Dating Factsheet (attached below)
    • Sketch a concept map linking together the details of relative and absolute dating.
    Review the types of rocks
    • Sketch the image into your notes.