# Lewis Shale

> geologic formation of the western United States

**Wikidata**: [Q17380054](https://www.wikidata.org/wiki/Q17380054)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Lewis_Shale)  
**Source**: https://4ort.xyz/entity/lewis-shale


## References

1. [Source](https://ngmdb.usgs.gov/Geolex/Units/Lewis_8699.html)
2. [Source](https://ngmdb.usgs.gov/Geolex/UnitRefs/UteCanyonRefs_10725.html)