TY  - RPRT
TI  - Integration of geophysical evidence suggests that anorthosite composes a significant portion of Grand Marais ridge, an inferred basement high in western Lake Superior
AU  - V. J. Grauch
AU  - Samuel J. Heller
PY  - 2021
UR  - https://pubs.usgs.gov/publication/70222361
ID  - 70222361
ER  -