Dystrudept, Spodic
A representative soil profile of a Spodic Dystrudept from Forest County, NE Wisconsin. (Photo provided by R. Schaetzl.)
Spodic Dystrudepts have a weak accumulation of amorphous materials. They are presumed to be developing toward Spodosols, mainly Orthods, but are too weakly developed to be classified as Spodosols. Spodic Dystrudepts are of moderate extent in the United States. They are mainly in the Northeastern States.
Dystrudepts are the acid Udepts of humid and perhumid regions. They developed mostly in late-Pleistocene or Holocene deposits. Some developed on older, steeply sloping surfaces. The parent materials generally are acid, moderately or weakly consolidated sedimentary or metamorphic rocks or acid sediments. A few of the soils formed in saprolite derived from igneous rocks. The vegetation was mostly deciduous trees. Most of the Dystrudepts that formed in alluvium are now cultivated, and many of the other Dystrudepts are used as pasture. The normal horizon sequence in Dystrudepts is an ochric epipedon over a cambic horizon. Some of the steeper Dystrudepts have a shallow densic, lithic, or paralithic contact. Dystrudepts are extensive in the United States. They are mostly in the Eastern and Southern States.
Udepts are mainly the more or less freely drained Inceptisols that have a udic or perudic moisture regime. They formed on nearly level to steep surfaces, mostly of late-Pleistocene or Holocene age. Some of the soils, in areas where the soil moisture regime is perudic, formed in older deposits. Most of the soils had or now have a forest vegetation, but some support shrubs or grasses. A few formed from Mollisols by truncation of the mollic epipedon, mostly under cultivation. Most of the soils have an ochric or umbric epipedon and a cambic horizon. Some also have a sulfuric horizon, a fragipan, or a duripan. The Udepts in the United States are most extensive in the Appalachian Mountains, on the Allegheny Plateau, and on the west coast.
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...
Dystrudept, Spodic
A representative soil profile of a Spodic Dystrudept from Forest County, NE Wisconsin. (Photo provided by R. Schaetzl.)
Spodic Dystrudepts have a weak accumulation of amorphous materials. They are presumed to be developing toward Spodosols, mainly Orthods, but are too weakly developed to be classified as Spodosols. Spodic Dystrudepts are of moderate extent in the United States. They are mainly in the Northeastern States.
Dystrudepts are the acid Udepts of humid and perhumid regions. They developed mostly in late-Pleistocene or Holocene deposits. Some developed on older, steeply sloping surfaces. The parent materials generally are acid, moderately or weakly consolidated sedimentary or metamorphic rocks or acid sediments. A few of the soils formed in saprolite derived from igneous rocks. The vegetation was mostly deciduous trees. Most of the Dystrudepts that formed in alluvium are now cultivated, and many of the other Dystrudepts are used as pasture. The normal horizon sequence in Dystrudepts is an ochric epipedon over a cambic horizon. Some of the steeper Dystrudepts have a shallow densic, lithic, or paralithic contact. Dystrudepts are extensive in the United States. They are mostly in the Eastern and Southern States.
Udepts are mainly the more or less freely drained Inceptisols that have a udic or perudic moisture regime. They formed on nearly level to steep surfaces, mostly of late-Pleistocene or Holocene age. Some of the soils, in areas where the soil moisture regime is perudic, formed in older deposits. Most of the soils had or now have a forest vegetation, but some support shrubs or grasses. A few formed from Mollisols by truncation of the mollic epipedon, mostly under cultivation. Most of the soils have an ochric or umbric epipedon and a cambic horizon. Some also have a sulfuric horizon, a fragipan, or a duripan. The Udepts in the United States are most extensive in the Appalachian Mountains, on the Allegheny Plateau, and on the west coast.
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...