HW1_06 - N/N % 2-(a) On the cross section shown below,...

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GLY 110 HW Problem # 1 Relative and Absolute Age Dating 1- A crystal of the mineral “Zircon” separated from an igneous rock was analyzed for the two isotopes 238 U and 206 Pb. It was found to contain 1009 atoms of 238 U and 191atoms of 206 Pb. Knowing that the half life of 238 U is 4.5 billion years, how old is this zircon crystal? Use the graph provided to help you with this calculation. (Hint: You need to determine the values of N, D and N° to use this curve, or use the relation: λ = 0.693 T 1/2 and the equation of radioactive decay). Show your calculations.
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Unformatted text preview: N/N % 2-(a) On the cross section shown below, arrange the units and surfaces in reverse chronological order (from oldest to youngest). Youngest: ____________________ ____________________________ ____________________________ ____________________________ ____________________________ ____________________________ ____________________________ ____________________________ ____________________________ Oldest: ______________________ (b) What kind of rock forms the feature labeled 1? (c) What kind of rock forms the feature labeled 2?...
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HW1_06 - N/N % 2-(a) On the cross section shown below,...

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