Earth science lab radiometric dating Earth science lab radiometric dating

Earth science lab radiometric dating

The age of a mineral is determined from the number of parent and daughter isotopes it contains.

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Consult your lab manual and materials for details. What is the half-life of 40 K?

Unless otherwise noted, all images and graphics contained within are the property of Richard Harwood and may only be reproduced with permission from the author. Using the graph, determine the number of half-lives elapsed for each sample.

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N D is the number of daughter atoms. N P is the number of parent atoms. Round the answer to the nearest million years - as shown above Using the half-life calculated above, complete the Half-lives Elapsed column in the table.

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Mathematical calculation of radiometric dating involves the use of a simple equation. For example, after one half-life 0.

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Divide the value in column 2 by the value in column 1. If the half-life is 5, years, determine the age of the sample.

Only column 3 will be graded. The greater the number of daughter isotopes, the older the mineral.

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After two half-lives 0. The purpose of this portion of this exercise is to practice determining radiometric ages using graphical techniques and mathematical techniques. Enter the appropriate value in the space provided.

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Ages can be determined using the equation:. Complete columns 1 and 2 in the table below. Round each answer to the nearest million years - exampleyears would be entered as ; 9, years would be entered as