Geoscience Reference
In-Depth Information
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Country boundaries are not authoritative.
December 2000
Figure 11.22 The global distribution of major soil orders.
This map is color-coded to reflect the geography of soil orders. Areas mapped as “Rocky Land,” such as in central
Asia, are places where large expanses of rock are exposed at the surface and soils have yet to form. Areas designated as “Shifting Sands,” such as in the Sahara Desert, are
places where the wind deposits sand in a way that precludes the development of soil. Areas mapped as “Ice Sheet/Glacier,” such as in Antarctica and Greenland, are places
where ice covers the ground and soils cannot form. (
Source:
U.S. Department of Agriculture.)
