References

Allen, J. (2015). Letter K: Sirmilik National Park [Digital image]. NASA Earth Observatory. http://earthobservatory.nasa.gov/IOTD/ view.php?id=87216&src=ve.

Earle, S. (2019). Physical geology (2^nd ed.). BCcampus. https://opentextbc.ca/physicalgeology2ed/

Hawthorne, R. (2011). Columbia Icefield view [Digital photo]. Wikimedia Commons. https://en.wikipedia.org/wiki/Columbia_Icefield#/media/File:Columbia_icefield_view.jpg