magmatic differentiation

American  

noun

1. the process through which the same initial magma evolves into a variety of igneous rocks.

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magmatic differentiation Scientific  

/ măg-măt′ĭk /

1. The process by which chemically different igneous rocks, such as basalt and granite, can form from the same initial magma. Magmatic differentiation can occur by the chemical reaction between the magma and the first crystals to solidify out of it, or by the physical separation of the first crystals that form from the remaining magma, either through settling to the bottom of a magma chamber or through crustal deformations that cause the remaining magma to be squeezed out to cool in veins and dikes.

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Example Sentences

This model does not solve the problem of continent formation since magmatic differentiation seems to need a thicker crust.

From Textbooks • Jan. 1, 2017

As magma slowly rises and cools into solid rock, it undergoes physical and chemical changes in a process called magmatic differentiation.

From Textbooks • Jan. 1, 2017

As magma begins to cool and crystallize, a process known as magmatic differentiation changes the chemistry of the resultant rock towards a more felsic composition.

From Textbooks • Jan. 1, 2017

Xenoliths are also common in the processes of magma mixing and rejuvenation, two other processes that can contribute to magmatic differentiation.

From Textbooks • Jan. 1, 2017

The processes affecting magma composition include partial melting, magmatic differentiation, assimilation, and collision.

From Textbooks • Jan. 1, 2017