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A family may contain several soil series which describe the physical location using the name of a prominent physical feature such as a river or town near where the soil sample was taken. An example would be Merrimac for the Merrimack River in New Hampshire. More than 14,000 soil series are recognised in the United States.
Soils were thought to be alike in origin if they were derived from the same kind of rocks or if they were derived in sediments derived from the same kind of rocks and deposited at the same time. [3] A soil series name generally is derived from a town or landmark in or near the area where the soil series was first recognized. [5]
Soils are the product of climate, organisms and topography, acting on parent (geologic) material over time. Thus the great diversity of geologic materials, geomorphic processes, climatic conditions, biotic assemblages and land surface ages in the United States is responsible for the presence of an enormous variety of mineral and organic soils.
San Joaquin (soil) Sapric; Sassafras (soil) Scobey (soil) Seitz (soil) Serpentine soil; Shrub swamp; Siliceous soil; Soil classification; Solonchak; Solonetz; Stagnogley; Stagnosol; Stuttgart (soil) Subaqueous soil; Subsoil
This is the list of the 32 Reference Soil Groups in the sequence of the key (Chapter 4 of the WRB Manual), including the codes (Chapter 6 of the WRB Manual). This list is mainly taken from Table 2 (Chapter 1) of the WRB Manual. [1] Soils with thick organic layers. HS Histosol (with thick organic layers) Soils with strong human influence
This is a list of U.S. state soils. A state soil is a soil that has special significance to a particular state. Each state in the United States has selected a state soil, twenty of which have been legislatively established. These official state soils share the same level of distinction as official state flowers and birds.
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Soil texture triangle showing the USDA classification system based on grain size Map of global soil regions from the USDA. For soil resources, experience has shown that a natural system approach to classification, i.e. grouping soils by their intrinsic property (soil morphology), behaviour, or genesis, results in classes that can be interpreted for many diverse uses.