In this article we will discuss about:- 1. Objectives of Thermal Contraction Theory 2. Mechanism of the Thermal Contraction Theory 3. Evaluation. Objectives of Thermal Contraction Theory: Jeffreys, a strong exponent of contraction theory, postulated his ‘thermal contraction theory’ to explain the origin and evolution of major reliefs of the earth’s surface (continents, ocean basins, […]
Thermal Contraction Theory of Jeffereys | Orogenesis | Geography
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Geosynclinal Orogen Theory of Kober | Orogenesis | Geography
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In this article we will discuss about:- 1. Objective of Geosynclinal Orogen Theory 2. Base of the Geosynclinal Orogen Theory 3. Mechanism 4. Evaluation. Objective of Geosynclinal Orogen Theory: Famous German geologist Kober has presented a detailed and systematic description of the surface features of the earth in his book ‘Der Bau der Erde’. His […]
Radioactivity Theory of Joly | Mountain Building | Geography
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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 […]