Baeleigh B.

asked • 11/05/19

How to calculate the sample total 206Pb/204Pb?

Total sample ratios:    204Pb/206Pb =  8.676 × 10-6               207Pb/206Pb =  0.1143

                                   208Pb/206Pb =  0.0545                        238U/206Pb =   3.00


Common Pb ratios:    206Pb/204Pb =  15.44                          207Pb/206Pb =  0.9883

                                   208Pb/206Pb =  2.272


Constants:                  λU238 = 1.55125 × 10-10 yr-1               λU235 = 9.8485 × 10-10 yr-1

                                   λTh232 = 0.49475 × 10-10 yr-1              238U/235U = 137.88


We've been instructed to just use our book but the book for this class is super vague and confusing. If someone could even describe how to start this it would be super helpful.

1 Expert Answer

By:

Stanton D. answered • 11/07/19

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