Geological structures

Descrição

A Levels Geology (Global Tectonics) Mapa Mental sobre Geological structures, criado por mavina em 17-02-2014.
mavina
Mapa Mental por mavina, atualizado more than 1 year ago
mavina
Criado por mavina quase 11 anos atrás
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Resumo de Recurso

Geological structures
  1. Unconformity = a period when no sediment was deposited
    1. Angular conformity = the rocks above and below the unconformity have different dips, and possibly strikes
    2. Joints
      1. A fracture in competent rocks along which no observable movement has occurred
        1. Tectonic joints = form as a result of folding and cause tension joints parallel to the axial plane and cross joints on the limbs
          1. Cooling joints = form as a result of contraction on cooling of igneous rocks
            1. Unloading joints = form as a result of lower pressure near to the surface, they are often horizontal as well as vertical

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