# Mona Formation

> metamorphosed, heterolithic unit of Neoarchean age in the Marquette-Ishpeming area of Michigan's Upper Peninsula

**Wikidata**: [Q123563561](https://www.wikidata.org/wiki/Q123563561)  
**Source**: https://4ort.xyz/entity/mona-formation


## References

1. [Source](http://kids-sierra.pittstate.edu/search~S1?/tU.S.+Geological+Survey+bulletin+%3B+1808-E%2CF./tu+s+geological+survey+bulletin+++++1808+e+f/-3%2C1%2C1%2CB/frameset&FF=tu+s+geological+survey+bulletin+++++1904+p&1%2C1%2C)