Metamorphic Rocks

5.1 INTRODUCTION Metamorphic rocks form by the physical, and sometimes chemical, alteration of a pre-existing rock, whether it is igneous or sedimentary. In some cases, even metamorphic …

20 Interesting Facts about Metamorphic Rocks

Metamorphic rocks are formed by intense heat and pressure applied to existing rocks over time. This heat and pressure cause the rock to recrystallize and form different layers. This stratification of rocks is caused by the pressure exerted on the rocks and the arrangement of minerals they contain. Layers can range from very …

Metamorphic rock

Metamorphic rock - Foliated, Textures, Minerals: The most obvious features of metamorphic rocks are certain planar features that are often termed s-surfaces. The simplest …