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Geologic Principles

Geologic Principles. What geologic principles are shown in this diagram?. Sequences of Events: What is the order of each event shown?. Radiometric Dating. U-Pb decay curve How much of the daughter element is remaining after 4 half lives? What is the age of the sample?.

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Geologic Principles

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  1. Geologic Principles • What geologic principles are shown in this diagram?

  2. Sequences of Events: What is the order of each event shown?

  3. Radiometric Dating • U-Pb decay curve • How much of the daughter element is remaining after 4 half lives? • What is the age of the sample?

  4. Potassium-Argon Decay Series

  5. Parent and Daughter Nuclides

  6. Cross-Cutting Relationships, Superposition and Correlation • Determining the age of sedimentary strata by correlation

  7. Cross-Cutting Relationships • How old (numerical age) is rock unit A? • How old (numerical age) is rock unit B? • How old (numerical age) is rock unit C?

  8. Note the changes in the time scale as it was revised. What do you think are the reasons for this?

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