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MLRA 30 - Sonoran Basin and Range

Arizona, California, and Nevada
194,030 km2 (74,910 mi2)

Soils:
The dominant soils are Orthents, Psamments, Fluvents, Orthids, and Argids. Most of these soils have a thermic temperature regime and an aridic moisture regime. A few have a hyperthermic or a mesic temperature regime. Torripsamments (Cajon, Pintura, Toquerville, and Rositas series), Torlifluvents (Coachella, Tobler, Hantz, Leeds, and Vint series), Salorthids (Land series), and Torriorthents (Isom and Ivins series) are in basins and valleys and on flood plains. Haplargids (Chuckwalla, Mohave, Renbac, and Bitter Springs series), Paleorthids (Las Vegas, Cave, Harrisburg, and Winkel series), Paleargids (Domino and Bermesa series), and Calciorthids (Hobog, Laverkin, Nickel, Sunrise, and Nikey series) are on older alluvial fans and terraces. Shallow Torriorthents (Cellar, House Mountain, Retriever, and St. Thomas series), shallow Haplustolls (Virgin Peak series), shallow Camborthids (Pulsipher series), and Torripsamments (Moapa series) are in mountainous areas.


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Comments and Questions

12/16/98