Answer: cementation and compaction of grains during diagenesis
Which of the following processes are NOT involved in metamorphism?

During recrystallization the grains making up the protolith change shape and size. The identity of the mineral does not change during this process only the texture. Recrystallization occurs due to heating of the protolith. The temperature at which this occurs can vary depending on the minerals present. Recrystallization generally begins when temperatures reach above half the melting point of the mineral on the Kelvin scale.

Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than 150 to 200 °C (300 to 400 °F) and often elevated pressure (100 megapascals (1 000 bar) or more) causing profound physical or chemical changes. During this process the rock remains mostly in the solid state but gradually recrystallizes to a new texture or mineral composition. The protolith may be a sedimentary igneous or e…

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Metamorphosis is a biological process by which an animal physically develops after bi...


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