Metamorphic processes cannot be either observed directly or demonstrated practically. They are very gradual, large-scale processes involving geological times measurable in terms of millions of years. It is only through the study of their effects on the rocks that conclusions can be drawn regarding the nature of the process through which those rocks have passed. […]
Examples of Metamorphic Changes in Rocks | Geology
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Top 4 Types of Metamorphism| Rocks | Geography
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The following points highlight the four main forms and types of metamorphism. The types are:- 1. Contact Metamorphism 2. Regional Metamorphism 3. Hydro-Metamorphism 4. Hydro-Thermo-Metamorphism. Type # 1. Contact Metamorphism: Contact metamorphism takes place when the mineral composition of the surrounding rocks known as aureoles is changed due to intense heat of the intruding magmas. […]