Published February 1955
| public
Journal Article
A⁴⁰-K⁴⁰ dating
- Creators
-
Wasserburg, G. J.
- Hayden, R. J.
Abstract
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.
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.Additional details
- Alternative title
- A40-K40 dating
- Eprint ID
- 117837
- Resolver ID
- CaltechAUTHORS:20221111-678968900.3
- AT(11-1)-101
- Atomic Energy Commission
- G-208
- NSF
- Created
-
2022-11-17Created from EPrint's datestamp field
- Updated
-
2022-11-17Created from EPrint's last_modified field