Imbrication

Definition - What does Imbrication mean?

Imbrication refers to the way the clasts are deposited or arranged over each other in such a way that every layer of clasts overlap one another in a consistent manner. Imbrications are formed in the volcano remains i.e. it can be seen how clasts arranged in the molten magma and once it dried up, they appear to be over one another in a consistent manner. Imbrications are shaped ellipsoid.

Petropedia explains Imbrication

Imbrication represents the way various rocks are shaped. It is related to geological science and study of rocks (igneous, sedimentary rocks or various other rocks). The imbrication is generally related to ellipsoid way of rocks representation. There are two ways rocks are imbricated:

  • A-axis Imbrication and
  • AB Plane Imbrication

In A-axis imbrication, the axis of the clasts looks like parallel to the direction of flow whereas in AB plane imbrication, the long axis of the clasts looks like perpendicular to the direction of flow.

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