quando a terra desliza por aí abaixo (landslides).


Ver em YOUTUBE/geografismos: www.youtube.com/watch?v=f9CeDGY5QuQ

Maierato é uma comuna italiana da região da Calábria (é uma região do sul da Itália que ocupa o “dedo” da península itálica ao sul de Nápoles), província de Vibo Valentia, com cerca de 2.247 habitantes. Estende-se por uma área de 39 km², tendo uma densidade populacional de 58 hab/km².


Deslizamentos translacionais (Landslides):

Continuar a ler AQUI


Também designados por "movimentações translacionais", neste tipo de cedência verifica-se o deslizamento mais ou menos rápido de rocha ou de detritos ao longo de um plano pré-existente (em geral planos de estratificação, foliação, diacláses, etc.).

Diferem das movimentações rotacionais ("slumps") principalmente pelo facto da superfície de deslocamento não ser encurvada mas sim plana.

A maior parte dos deslizamentos ocorre porque a tensão tangencial da gravidade e a inclinação dos planos de fraqueza estrutural da rocha têm o mesmo sentido.


O maior deslizamento conhecido é o de Saidmarreh, nas Montanhas de Zagros, no sudoeste do Irão, ocorrido há cerca de 10 mil anos, em que um "bloco" de calcário com 305 m de espessura, 14 km de comprimento e 5 km de largura se destacou do maciço de Kabir kuh e deslizou através do vale de Saidmarreh, com 8 km de largura, tendo inércia suficiente para subir uma elevação com 460 m de altura, tendo parado a cerca de 18 km da origem.


FONTE:
DIAS, J.M Alveirinho.Tipos de Movimentações de Massa: http://w3.ualg.pt/~jdias/GEOLAMB/GA4_MovMassa/GA43_tipos/Tipos.html

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