Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus | 
| K/Ar  | |
|---|---|
| UF | potassium-argon | 
| RT | absolute age | 
| isotope ratios | |
| argon | |
| potassium | |
| SN | Isotopic ratio used in age determination. | 
| Data sets | Publications | Expeditions | Thesaurus | 
| K/Ar  | |
|---|---|
| UF | potassium-argon | 
| RT | absolute age | 
| isotope ratios | |
| argon | |
| potassium | |
| SN | Isotopic ratio used in age determination. |