Sign in via your Institution. You could not be signed in, please check and try again. Sign in with your library card Please enter your library card number. Show Summary Details Overview potassium—argon dating. Reference entries potassium—argon dating in A Dictionary of Physics 6 Length: words.
View all related items in Oxford Reference » Search for: 'potassium—argon dating' in Oxford Reference ». All rights reserved. Sign in to annotate. Delete Cancel Save.
Cancel Save. The Decay Profile In this simulation, a unit of molten rock cools and crystallizes. The ratio of K to Ar is plotted. Note that time is expressed in millions of years on this graph, as opposed to thousands of years in the C graph. Click on the "Show Movie" button below to view this animation. K-Ar Decay Profile. How are Samples Processed? Clicking on the "Show Movie" button below will bring up an animation that illustrates how a K-Ar sample is processed and the calculations involved in arriving at a date.
This is actually a mini-simulator, in that it processes a different sample each time and generates different dates. K-Ar Processing. Limitations on K-Ar Dating The Potassium-Argon dating method is an invaluable tool for those archaeologists and paleoanthropologists studying the earliest evidence for human evolution. As with any dating technique, there are some significant limitations.
Contents 2. Introduction 3. How to cite. Overview The potassium-argon K-Ar dating method is probably the most widely used technique for determining the absolute ages of crustal geologic events and processes.
This is a preview of subscription content, log in to check access. Dalrymple, G. San Francisco: W. Freeman, pp. Google Scholar. Dickin, S. Cambridge: Cambridge University Press, pp. Faure, G.
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