# Acasta Gneiss

> rock that is among the oldest known crustal fragments on Earth

**Wikidata**: [Q338146](https://www.wikidata.org/wiki/Q338146)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Acasta_Gneiss)  
**Source**: https://4ort.xyz/entity/acasta-gneiss


## References

1. Freebase Data Dumps. 2013