Lab – Relative and Absolute Dating.docx
Each row is 4 pts.
2 ptsEach row is 4 points. pt each1 pt each Final questions:
For extra credit of 2 pts each, number the blocks from the oldest layer/event starting at 1 to the youngest event which will be the highest number on the diagram. | Describe in detail how this geologic sequence came to be. Include processes and events like folding, faulting, tilting, deposition, instrusions, and unconformities.
2 pts each |
B. In dating geologic materials, age determinations are often cross-checked by using different isotopes from the same sample. Why is this good science?
2 pts |
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C. To which geologic Era can you assign the basal granite (uraninite and zircon samples)?
1 pt |
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D. To which geologic Era can you assign the younger granite intrusion (mica samples)?
1 pt |
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E. To which geologic Era can you assign the volcanic ash bed?
1 pt |
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F. Combining the radiometric ages and the relative age principles you know, construct a sequence of events for the block diagram.
2 pts |
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How are absolute dating and relative dating different?
2 pts |
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In your opinion, is one method better than the other?
2pts |
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Imagine that you had to tell someone who didn’t know radioactive material decays into daughter atoms. How could you describe this process to them? Include a description of half-life in your answer.
4pts |
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