Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
isotope ratios  | |
|---|---|
| RT | Al-27/Al-26 |
| Ar-38/Ar-36 | |
| Ar-40/Ar-36 | |
| Ar-40/Ar-39 | |
| Ar/Ar | |
| B-11/B-10 | |
| Be-10/Be-9 | |
| C-13/C-12 | |
| C-14/C-12 | |
| Cl-37/Cl-35 | |
| Cr-53/Cr-52 | |
| D/H | |
| He-4/He-3 | |
| He/He | |
| Hf-177/Hf-176 | |
| I/Xe | |
| Io/Th | |
| Io/U | |
| isotopes | |
| K/Ar | |
| Kr/Kr | |
| Lu/Hf | |
| Mg-25/Mg-24 | |
| Mg-26/Mg-24 | |
| N-15/N-14 | |
| Nd-144/Nd-143 | |
| Nd/Nd | |
| Ne-22/ | |
| SN | A valid term through 1972. From 1972-1992, also search ratios AND isotopes. Also see isotopes, absolute age and name of chemical element. Added to Thesaurus in 1993. |