In this article we will discuss about:- 1. Objectives of Radioactivity Theory 2. Bases of the Radioactivity Theory 3. Mechanism 4. Evaluation. Objectives of Radioactivity Theory: Joly postulated his theory based on radioactivity of certain radioactive minerals in the year 1925 in his book, ‘Surface History of the Earth’ to account for the origin and […]
Radioactivity Theory of Joly | Mountain Building | Geography
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Folded Mountains: Definition and Characteristics | Mountains | Geography
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In this article we will discuss about:- 1. Definition of Folded Mountains 2. Classification of Folded Mountains 3. Characteristics. Definition of Folded Mountains: Folded mountains are defined as the formation of folding of crustal rocks by compressive forces generated by endogenetic forces coming from within the earth. These are the highest and most extensive mountains […]
Classification of Mountains | Mountains | Geography
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In this article we will discuss about the classification of mountains on the basis of height, location, mode of origin and period of origin. On the Basis of Height: (i) Low mountains; height ranges between 700 to 1,000 m. (ii) Rough mountains; height-1000 m to 1,500 m (iii) Rugged mountains; height-1,500 to 2,000 m. (iv) […]