This is one of 27 power point slides illustrating mapping of Holocene river alluvium along central Arizona's Verde River.
Online resource.
Pearthree and other, 2011, Mapping of Holocene River Alluvium along the Verde River, Central Arizona, https://library.azgs.arizona.edu/item/PPPP-1552427409350-388
Photographer: Joseph Cook
Photo Date: circa 2010