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A⁴⁰-K⁴⁰ dating

Wasserburg, G. J. and Hayden, R. J. (1955) A⁴⁰-K⁴⁰ dating. Geochimica et Cosmochimica Acta, 7 (1-2). pp. 51-60. ISSN 0016-7037. doi:10.1016/0016-7037(55)90045-4.

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The A⁴⁰/K⁴⁰ ratios and the Pb-U ages of various co-existing potassium feldspars and uraninites were determined. It was found that with a branching ratio λeλβ = 0.085 ± 0.005 and a decay constant λ = 0.55 x 10⁻⁹, the A⁴⁰/K⁴⁰ ages could be brought into agreement with the Pb-U ages for samples ranging from 260 to 1860 m.y. Ko evidence was found for the loss of argon by diffusion from potassium feldspars.

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Wasserburg, G. J.0000-0002-7957-8029
Alternate Title:A40-K40 dating
Additional Information:Thia work was supported in part by AEC contract number AT(11-1)-101 and in part by National Science Foundation grant number G-208.
Funding AgencyGrant Number
Atomic Energy CommissionAT(11-1)-101
Issue or Number:1-2
Record Number:CaltechAUTHORS:20221111-678968900.3
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117837
Deposited By: Tony Diaz
Deposited On:17 Nov 2022 22:55
Last Modified:17 Nov 2022 22:55

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