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DO NOW 

DO NOW . Facts: Layer C has a 1:1 ratio of U-235 to Pb – 207. Figure 5:. Facts: Layer E has 30% U-235 Layer H has 20% U-235. Figure 4:. Facts: Layer K is 1/8 of parent with a half-life of 800 million years . 800M years. 2400 M years. Facts:

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DO NOW 

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  1. DO NOW 

  2. Facts: • Layer C has a 1:1 ratio of U-235 to Pb – 207 Figure 5:

  3. Facts: • Layer E has 30% U-235 • Layer H has 20% U-235 Figure 4:

  4. Facts: Layer K is 1/8 of parent with a half-life of 800 million years\ 800M years 2400 M years

  5. Facts: Layer K is 1/8 of parent with a half-life of 800 million years. 800M years 2400 M years

  6. Questions: • Look at fault “D”, when did it happen? Explain: • When did layers H, F, K, and J tilts? Explain: • Do you know the exact age of layer B? Explain:

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