In this article we will discuss about the classification of sedimentary rocks on the basis of the nature of sediments:- 1. Mechanically Formed Sedimentary Rocks 2. Chemically Formed Sedimentary Rocks 3. Organically Formed Sedimentary Rocks. 1. Mechanically Formed Sedimentary Rocks: Previously formed rocks are subjected to mechanical or physical disintegration and thus the rocks are […]
Classification of Sedimentary Rocks | Geography
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Classification of Metamorphic Rocks | Geography
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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 […]
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. […]