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(Solved) Several sub-samples of a lunar meteorite collected in Antarctica


Several sub-samples of a lunar meteorite collected in Antarctica were analyzed for dating by the Rb-Sr method.  The analytical results for two subsamples are:

    Sub-sample  87Sr/86Sr  87Rb/86Sr

    PX1,R            0.703415   0.07779

    Pl2,R             0.699193   0.001330

The values define two points in the x-y plane where  87Rb/86Sr = x and  87Sr/86Sr = y

   a. Calculate the slope m of a straight line connecting the two points:

   b. Calculate a Rb-Sr date from the slope

 


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Oct 15, 2019

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