The soil of the Southern Utah Experiment Farm is a very interesting type: it is highly charged with gypsum and thereby presents a condition unique in reported studies of the soils of America. Gypsiferous soils are characteristic of a large portion of Southern Utah; many of them are derived from shale, others from sandstone, impregnated with gypsum.
Widtsoe, John A. and Stewart, Robert, "Bulletin No. 121 - The Soil of the Southern Utah Experiment Station" (1913). UAES Bulletins. Paper 72.