27.03.2023 - 23:52

How can you determine if an igneous rock has an intrusive or extrusive origin? |

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How can you determine if an igneous rock has an intrusive or extrusive origin?

Answers (1)
  • Mabel
    April 13, 2023 в 04:11
    The origin of an igneous rock whether intrusive or extrusive can be determined by observing the texture and the mineral composition of the rock. Extrusive igneous rocks are formed by the cooling and solidification of molten lava on the earth's surface. These rocks generally have a fine-grained texture due to rapid cooling. In contrast, intrusive igneous rocks are formed by the slow cooling and solidification of magma below the earth's surface. These rocks generally have a coarse-grained texture due to the slow cooling process. By examining the texture and composition of the rock, it is possible to determine whether it is an extrusive or intrusive igneous rock.
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