Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in geochronology and archaeology. It is based on measurement of the...

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...

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...

Other radiometric dating techniques are available for earlier periods. One of the most widely used is potassium–argon dating (K–Ar dating). Potassium-40...

where only ashes from cremation are interred. K–Ar dating Potassium–argon dating; a radiometric dating method useful for samples older than 100,000 years...

Porak volcano itself and the third stage has been dated 15 ± 15 ka by K-Ar dating. Two long lava flows, one of which 21 km long, stretch from the field...

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...

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...

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...

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...