metamorphism: Characteristics of Metamorphism

In general, a metamorphic rock is coarser and has a higher density and lower porosity than the rock from which it was formed. Under low grade metamorphic conditions, the original rocks may only compact, as in the formation of slate from shale. High grade metamorphism changes the rock so completely that the source rock often cannot be readily identified.

Sections in this article:

• Introduction
• Regional Metamorphism
• Local Metamorphism
• Changes in Chemical Constituents
• Foliation
• Characteristics of Metamorphism

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