# δ18O

> measure of the ratio of stable isotopes oxygen-18 and oxygen-16

**Wikidata**: [Q344117](https://www.wikidata.org/wiki/Q344117)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Δ18O)  
**Source**: https://4ort.xyz/entity/18o


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)