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Rock (geology)

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220px-SandstoneUSGOV

A sandstone rock.

RockEdit

A rock is a naturally occurring solid aggregate consisting of one or more minerals/mineraloids.

ClassificationEdit

Rocks can be classified by several characteristics: mineral and chemical composition, texture, color, permeability.

Rock types refer to the group of 3 types of rocks:

  • Igneous, rocks that are formed through volcanic activity
  • Sedimentary, rocks that are formed by sedimentation of material at the surface and within bodies of water.
  • Metamorphic, sedimentary, igneous, or metamorphic rocks that have undergone a major change

Due note; that a rock can hold characteristics of two or three of these types. It is generally classified into the type that it is more closely related to.

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