Haplocryod
A soil profile of a Haplocryod in Alaska. This soil formed in glacial till that is only about 200 years old. The thin albic and spodic horizons are within the upper 30 centimeters. (Soil Survey Staff. 2015. Illustrated guide to Soil Taxonomy. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil Survey Center, Lincoln, Nebraska)
Haplocryods have horizons that are mostly thin but may be strongly contrasting. The base of the spodic (accumulation of translocated organic matter in complex with aluminum and also commonly iron) horizon is generally less than 50 cm below the mineral soil surface. Some Haplocryods have permafrost at varying depths below the spodic horizon, between 100 and 200 cm. Others have, below the spodic horizon, another sequum with an argillic (clay accumulation) or kandic (very low cation-exchange capacity) subsoil horizon. In the United States, Haplocryods occur mostly in Alaska and in the higher mountains of the West and Northeast.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...
Haplocryod
A soil profile of a Haplocryod in Alaska. This soil formed in glacial till that is only about 200 years old. The thin albic and spodic horizons are within the upper 30 centimeters. (Soil Survey Staff. 2015. Illustrated guide to Soil Taxonomy. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil Survey Center, Lincoln, Nebraska)
Haplocryods have horizons that are mostly thin but may be strongly contrasting. The base of the spodic (accumulation of translocated organic matter in complex with aluminum and also commonly iron) horizon is generally less than 50 cm below the mineral soil surface. Some Haplocryods have permafrost at varying depths below the spodic horizon, between 100 and 200 cm. Others have, below the spodic horizon, another sequum with an argillic (clay accumulation) or kandic (very low cation-exchange capacity) subsoil horizon. In the United States, Haplocryods occur mostly in Alaska and in the higher mountains of the West and Northeast.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...