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Soil erosion


As we know, rainfall, wind and temperature variations caused by heat and cold alter and disintegrate the rocks.

The soil also suffers the action of these factors: the impact of rain and wind, for example, disaggregates its particles. These particles are then removed and transported to rivers, lakes, valleys and oceans.

In the photos below, we can see how the action of nature itself can cause profound changes in the landscape. The sea, rain and wind sculpted the seawalls in Torres beach (RS) and the cliffs in Bahia.


Torres, RS


Bahia

In humid weather and soils covered by natural vegetation, erosion is generally very slow, allowing it to be compensated for by the processes that form the soil from rocks.

Scientists say the taller mountains, with their needle-shaped peaks pointed upwards, are new from the geological aspect. The oldest are not so high and have a rounded ridge, with their hard rocks in sight. They have been suffering from erosion for a long time, which has worn them out a lot. This type of erosion is very common in Brazilian territory, but due to its slow action, it is almost always imperceptible to our eyes.


Mountain with needle-shaped peak: Finger of God, Rio de Janeiro, RJ.


Mountain with rounded ridge: Pedra Azul in Sundays Martins, ES.