Soil Summary:
dominant soils are very deep, very gravelly loamy sand and fine sandy loam to clay loam surfaces over gravelly, very gravelly and extremely gravelly sandy loam, fine sandy loam and or loamy sands or clay, clay loam and gravelly clay loam subsurface layers, limy throughout to more than a foot to lime, moderate to strong development (lime and clay accumulation) ; unit is dominated by Pima County soil survey map unit 79 (Tombstone very gravelly loam, 15 to 50 percent slopes), Pima County soil survey map unit 6 (Bernardino-Tombstone asssociation, 5 to 16 percent slopes) and Cochise County, Northwestern Part soil survey unit 79 (Stronghold-McAllister-Elgin complex, 5 to 25 percent slopes). This units comprise 69%, 24% and 7% of the ELT
Geologic Materials:
alluvium and residuum associated with sandstone, siltstone and conglomerate, undivided (QTs) and Holocene piedmont alluvium, undivided (Qy) which comprise 70% and 18% of the unit, respectively
