The Rise and Fall of Mountain Ranges

Mountains arise from the collision of tectonic plates.The crust of the Earth buckles and folds over millions of years, and large masses of rock are piled on top of each other. When erosion happens faster than uplifting, mountains will diminush in height. Conversely, where uplifting forces exceed those of erosion, the mountains will become higher.

Picture left to right: Rillenkarren in salt rock, weathering of quartzite, onyx marble, calcareous sinter, wind erosion in sandstone, core sample of sulphate rock, weathered limestone