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.

  • fluvial valley fills  volcanic material.such as;

                                                 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.
                                       -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.

No comments:

Post a Comment