# Bright Angel Shale

> stratigraphic formation

**Wikidata**: [Q14563356](https://www.wikidata.org/wiki/Q14563356)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Bright_Angel_Shale)  
**Source**: https://4ort.xyz/entity/bright-angel-shale


## References

1. [The Shinumo quadrangle, Grand Canyon district, Arizona](https://ngmdb.usgs.gov/Geolex/UnitRefs/BrightAngelRefs_4814.html)