Onlap and off-lap sequence in Southern Blythe basin near Cibola, AZ. Phil Pearthree standing on the basal Bouse formation carbonate (white bedded micrite), overlain by subaqueous Gilbert-style foreset beds and subaerial alluvium (shallowing up section) with abundant carbonate detritus reworked from underlying Bouse carbonate. View to north. Bouse carbonate is a lacustrine onlap or transgressive sequence sourced from the ancestral Colorado River that fed paleolake Blythe (transgressed to the right), followed by an offlap sequence that tracked the decline of paleolake Blythe, herein referred to as the “Trigo sediments”. Photo by Jordon Bright
Photographer: Jordon Bright
Photo Date: circa 2019
