# stratum

> layer of sedimentary rock or soil with internally consistent characteristics

**Wikidata**: [Q12758989](https://www.wikidata.org/wiki/Q12758989)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Stratum)  
**Source**: https://4ort.xyz/entity/stratum


## References

1. Freebase Data Dumps. 2013
2. YSO-Wikidata mapping project
3. GF WordNet
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)