McAuliffe found middle to late Pleistocene soils of the Sonoran Desert, which formed hundreds of thousands of years ago, were characterized by

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Middle to late Pleistocene soils of the Sonoran Desert, which formed hundreds of thousands of years ago, are characterized by a well-developed B horizon, high amounts of clay, a well-developed caliche layer, and a well-developed argillic horizon. These features are indicative of the soil development processes and environmental conditions present during that time period.

McAuliffe Found Middle to Late Pleistocene Soils of the Sonoran