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Unformatted text preview: Sr 87 obs = 0.7 Sr 86 obs + Rb 87 obs (e Lt-1) (SR 87 /Sr 86 ) obs = 0.7 + (Rb 87 /Sr 86 ) obs (e Lt-1) Rubidium substitutes for Potassium, K, with the same valency 1 and similar radii, 0.13 - 0.15 nm. The method used for this dating technique is to take a rock sample, a solid source, then vaporise it to pass it through a mass spectrometer to obtain the ratios of the elements. Plotting the ratios should give an interrupt of 0.7 as a check on the answer, while the slope gives t. The Potassium and Rubidium methods can be used together and often are as checks on one another....
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.
- Fall '10