The earth is made of a series of primary landforms that are eroded giving way to secondary landforms. A primary landform is that in which is untouched by erosion, created by tectonic activity, they lay in wait for erosion to shape them into something else. A a secondary landform is a primary landform that has been shaped by erosion over time. An example of this could be a mountain, which was formed originally through tectonic activity, but over time has been eroded into a different shape then it primarily was; it has been rounded, carried away, and through isostasy raised. Another example could be a syncline of soft sediment that over time is shaped into a valley. This picture is of me on sulfur mountain, which once was a primary form, and now is a secondary form.
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