Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, B. Bradley, University of Colorado. |
San Joaquin Valley, California. Shallow subsidence occurred above the highest prehistoric water table and was due to a combination of soil type, an initial high porosity, soil mineralogy and amount of clay (commonly montmorillonite), moisture content and other conditions present along parts of the west side of the San Joaquin Valley. (Source: John Kirk, California Department of Water Resources) Image Credit: B. Bradley. University of Colorado The slopes above streams and rivers are subjected to a variety of processes that cause them to recede and retreat from the river or stream channel. These processes, collectively called mass wasting, can be classified according to rapidity of movement and according to the type of materials that are transported. |
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