Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus | 
| Kr/Kr  | |
|---|---|
| RT | absolute age | 
| isotope ratios | |
| isotopes | |
| krypton | |
| SN | Isotopic ratio used in age determination. Added to Thesaurus in 1989. | 
| Data sets | Publications | Expeditions | Thesaurus | 
| Kr/Kr  | |
|---|---|
| RT | absolute age | 
| isotope ratios | |
| isotopes | |
| krypton | |
| SN | Isotopic ratio used in age determination. Added to Thesaurus in 1989. |