Conglomeratic upper bioclastic unit in unconformable contact with underlying thin-bedded Bouse marl. Upper deposits filled erosional channel features. The upper unit contains common shell fragments, particularly near the base, and some reworked tufa cobbles and small boulders (K. House is pointing to some), but gravel fraction is primarily siliciclastic and locally sourced. Base of exposure is local fan gravel of unit Tfg1.
The geologic map and report, 'The Geologic Map of the Cibola Area, La Paz County, Arizona, and Imperial County, California', is available for download https://library.azgs.arizona.edu/item/ADGM-1552428343570-176
Photographer: Brian Gootee
Photo Date: April 2015