discharges from the basal contact of the Moenkopi Formation with the underlying Cutler Formation somewhere within this rockfall at the head of the drainage that I am exploring today.
Within this brushy thicket and rockfall at the base of Adobe Mesa, alkaline groundwater surfaces from the Moenkopi Formation. Note the white soils on the left foreground.
About 10 liters per minute flows in the main channel below the discharge point, incised about three to four meters below the alluvial terrace.
Carbonate precipitate on vegetation and soil surfaces in the area are also evidence of the alkaline nature of the spring.
My GPS track superimposed on Google Earth imagery. The spring is located at the highest point in the drainage, in the area of brighter vegetation.