Histoturbel, Typic
A representative soil profile of a Typic Histoturbel near Fairbanks, Alaska. (Photo by D. Weindorf.)
Histoturbels are the Turbels that have organic materials at the surface. Commonly, the organic materials are thicker in the lower positions on the landscape and thinner in the higher positions. These soils are commonly saturated at or near the surface for some time during normal years. They commonly have redoximorphic features.
Turbels are the Gelisols that have one or more horizons with evidence of cryoturbation in the form of irregular, broken, or distorted horizon boundaries, involutions, the accumulation of organic matter on top of the permafrost, ice or sand wedges, and oriented rock fragments. Cryoturbation occurs only in soils with sufficient moisture. Cryoturbated horizons in soils that are dry for most of the year likely were more moist in the past. Turbels are the dominant suborder of Gelisols. They account for about half the Gelisols on a global basis. These soils are common in the High and Middle Arctic vegetation regions of North America and Eurasia.
For more information about soils and the Michigan State University-Department of Geography, visit:
project.geo.msu.edu/soilprofiles/
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...
Histoturbel, Typic
A representative soil profile of a Typic Histoturbel near Fairbanks, Alaska. (Photo by D. Weindorf.)
Histoturbels are the Turbels that have organic materials at the surface. Commonly, the organic materials are thicker in the lower positions on the landscape and thinner in the higher positions. These soils are commonly saturated at or near the surface for some time during normal years. They commonly have redoximorphic features.
Turbels are the Gelisols that have one or more horizons with evidence of cryoturbation in the form of irregular, broken, or distorted horizon boundaries, involutions, the accumulation of organic matter on top of the permafrost, ice or sand wedges, and oriented rock fragments. Cryoturbation occurs only in soils with sufficient moisture. Cryoturbated horizons in soils that are dry for most of the year likely were more moist in the past. Turbels are the dominant suborder of Gelisols. They account for about half the Gelisols on a global basis. These soils are common in the High and Middle Arctic vegetation regions of North America and Eurasia.
For more information about soils and the Michigan State University-Department of Geography, visit:
project.geo.msu.edu/soilprofiles/
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...