Geology Fieldnotes
https://www.nps.gov/articles/nps-geodiversity-atlas-mount-rushmore-national-memorial-south-dakota.htm

National Park Service (NPS)


This site provides a brief description of the geology of Mount Rushmore. Information about the conception and engineering of the monument is also featured. Links to a glossary and other relevant sites are included.

This resource is referenced here:
Subject: Geoscience:Geology
Resource Type: Scientific Resources:Overview/Reference Work