Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Nd  | |
|---|---|
| USE | neodymium |
| Nd-143/Nd-144 | |
|---|---|
| USE | Nd-144/Nd-143 |
| Nd-144/Nd-143 | |
|---|---|
| BT | isotopes |
| .stable isotopes | |
| ..Nd-144/Nd-143 | |
| BT | metals |
| .rare earths | |
| ..neodymium | |
| ...Nd-144/Nd-143 | |
| UF | Nd-143/Nd-144 |
| RT | isotope ratios |
| SN | This term has multiple hierarchies. |
| Nd/Nd | |
|---|---|
| RT | absolute age |
| isotope ratios | |
| neodymium | |
| SN | Isotopic ratio used for age determination. Added to Thesaurus in 1995. |
| Nd/Sm | |
|---|---|
| USE | Sm/Nd |
| Nd/Sr | |
|---|---|
| SN | Not a valid term for GeoRef. See Nd/Nd and Sr/Sr for dating. See neodymium and strontium respectively for isotope ratios for use in other studies. Use specific ratios if known (Note added 1995.). |