Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in geochronology and archaeology. It is based on measurement of the... 15 KB (1,884 words) - 13:37, 5 November 2023 |
Argon–argon (or 40Ar/39Ar) dating is a radiometric dating method invented to supersede potassium–argon (K/Ar) dating in accuracy. The older method required... 9 KB (1,101 words) - 18:17, 31 March 2024 |
Potassium–calcium dating, abbreviated K–Ca dating, is a radiometric dating method used in geochronology. It is based upon measuring the ratio of a parent... 11 KB (1,454 words) - 20:30, 5 December 2023 |
Other radiometric dating techniques are available for earlier periods. One of the most widely used is potassium–argon dating (K–Ar dating). Potassium-40... 14 KB (1,774 words) - 03:07, 8 November 2023 |
 | Traps. Six selected samples from the islands were subject to whole rock K-Ar dating. This yielded a mean age of 93.1±2.4 (2σ) vis-à-vis the age of the Rajmahal... 22 KB (2,249 words) - 00:32, 16 April 2024 |
Glossary of archaeology (section K) original depositional context, cf. unstratified. K–Ar dating Potassium–argon dating; a radiometric dating method useful for samples older than 100,000 years... 25 KB (2,611 words) - 05:55, 22 April 2024 |
 | Argon (redirect from Ar (element)) the age of rocks by K–Ar dating. In Earth's atmosphere, 39 Ar is made by cosmic ray activity, primarily by neutron capture of 40 Ar followed by two-neutron... 39 KB (4,633 words) - 00:10, 25 January 2024 |
 | were last at temperatures of 60 °C to 100 °C. Previously, Rb-Sr and K–Ar dating of biotite from the nepheline syenite at Beemerville yielded ages of... 9 KB (1,104 words) - 16:33, 29 October 2023 |
40K. While K–Ar dating has been used extensively in the geological sciences, the prevalence of 40Ca in nature has impeded its use in dating. Techniques... 21 KB (1,177 words) - 04:40, 29 March 2024 |
prominent dome which was last active approximately 84,000 years ago (K-Ar dating). Geothermal activity can be observed in the form of Solfataras and thermal... 1 KB (100 words) - 00:40, 6 January 2024 |