Here is a list of seven important metamorphic rocks: 1. Slate 2. Schist 3. Gneiss 4. Quartzite 5. Marble 6. Phyllite 7. Hornfels. 1. Slate: Slate is an extremely fine-grained metamorphic rock characterized by a slaty cleavage by virtue of which it can be readily split into thin sheets having parallel smooth surfaces. The slaty cleavage is due to parallel [...]
Metamorphic rocks are classified on the basis of foliation into the following types: 1. Foliated Metamorphic Rocks 2. Non-Foliated Metamorphic Rocks. 1. Foliated Metamorphic Rocks: i. Slate: Slates are formed due to dynamic regional metamorphism of shales and other argillaceous rocks. Slates are characterized by the 'presence of numerous closely- spaced parallel planes of splitting or cleavage' but the splitting [...]
This article will help you to learn about the rock cycle with diagram. The change of one rock into another type under different conditions of heat, pressure, weathering and erosion is known as rock cycle. Initially, all minerals originated from igneous rocks. As soon as igneous rocks are exposed they are weathered and eroded by various agents. The materials change [...]