Erosion Landform ( 11. Inverted Relief )

                                                                                                                                                      Back to Erosion Landform 

• Inverted relief known as;

                                  -Inverted topography
                                 -Topographic inversion

• That reversed elevation relative to other features.

• Low areas of a landscape become filled with lava / sediment.

• That hardens into material.

• That is resistant to erosion.

• Differential erosion removes the less resistant surrounding material.

• Leaving behind the younger resistant material.

• Then appear as a ridge where previously there was a valley. 

• Inverted relief observed on the surfaces of other planets.

            example topography discovered on Mars.

Processes of erosion than slopes and uplands:

• First, coarse-grained sediment.(gravel)

• It accumulates in the depression;

                          I. A stream valley /  lake basin. 
                        II. wind erosion removes fine-grained sediments.

• A fluvial valley fills  volcanic material.such as;

                                                 lava 
                                                 welded tuff 

• This resist erosion  surrounding surface.

• It is eroded away to create a ridge.

• Cementation of underlying sediments by minerals.

• Dissolved in water occur in a depression.

• Minerals for cementation can come from groundwater.

• It is thought that a low point.

• It is in a greater degree of cementation.

• The cemented sediments would resist erosion.

                             example 
                                       -Table Mountain
                                       -Tuolumne County, California

• Multiple lava flows filled an ancient fluvial valley.

• That cut westward through the central Sierra Nevada to the Central Valley about 10.5 million years ago.