This map shows the thickness in feet of potash of the Supai Formation. Potash is an essential ingredient of fertilizer. For Steve Rauzi's 2008 report on potash of the Supai Formation of the Holbrook Basin: http://repository.azgs.az.gov/uri_gin/azgs/dlio/1001
Photographer: Steve Rauzi
Photo Date: 2008
Photo Location Accuracy: Approximately Located
Photo Tags: potash, Holbrook Basin, Permian, Supai Formation 
