Erosión

Erosión do solo nun campo de millo na Universidade do Estado de Washington, Estados Unidos.

Denominase erosión ao transporte de partículas sedimentarias por correntes superficiais de auga, vento e procesos gravitatorios. As partículas inclúen:

  • Fragmentos de rochas creados por abrasión mecánica pola acción do vento, augas superficiais, glaciares e expansión-contracción térmica por variacións estacionais ou diúrnas.
  • Solos, os cales son creados pola descomposición química das rochas mediante a acción combinada de ácidos débiles disoltos en auga superficial e meteórica, hidrólise, ácidos orgánicos, bacterias, acción de plantas etc.

A pesar de que a erosión é un proceso natural, esta pode ser acelerada fortemente por actividades humanas tales como a deforestación, a construción de camiños e a urbanización.

Un problema particularmente serio é a erosión costeira propiciada pola construcións en praias, que perturban o fluxo de sedimentos nelas.

Os tipos de erosión son:

  • Xelivación
  • Interperismo
  • Erosión fluvial
  • Erosión glaciar
  • Erosión subterránea
  • Erosión mariña
  • Erosión eólica e
  • Erosión antrópica.
Este artigo tan só é un bosquexo
 Este artigo sobre xeoloxía é, polo de agora, só un bosquexo. Traballa nel para axudar a contribuír a que a Galipedia mellore e medre.
 Existen igualmente outros artigos relacionados con este tema nos que tamén podes contribuír.

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