Short notes on geosynclinal orogen theory by kober
Answers
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 main objective was to establish relationship between ancient rigid masses or tablelands and more mobile zones or geosynclines, which he called orogen.
Kober not only attempted to explain the origin of the mountains on the basis of his geosynclinal theory but he also attempted to elaborate the various aspects of mountain building e.g., formation of mountains, their geological history and evolution and development.
He considered the old rigid masses as the foundation stones of the present continents. According to him present continents have grown out of rigid massess. He defined the process of mountain building or orogenesis as that process which links rigid masse with geosynclines. In other words, mountains are formed from the geosynclines due to the impacts of rigid masses.
Kober’s geosynclinal theory is based on the forces of contraction produced by the cooling of the earth. He believes in the contraction history of the earth. According to J.A. Steers (1932) “Kober is definitely a constructionist, contraction providing the motive force for the compressive stress”.
In other words, the force of contraction generated due to cooling of the earth causes horizontal movements of the rigid masses or forelands which squeeze, buckle and fold the sediments into mountain ranges.
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 main objective was to establish relationship between ancient rigid masses or tablelands and more mobile zones or geosynclines, which he called orogen.
Kober not only attempted to explain the origin of the mountains on the basis of his geosynclinal theory but he also attempted to elaborate the various aspects of mountain building e.g., formation of mountains, their geological history and evolution and development.
He considered the old rigid masses as the foundation stones of the present continents. According to him present continents have grown out of rigid massess. He defined the process of mountain building or orogenesis as that process which links rigid masse with geosynclines. In other words, mountains are formed from the geosynclines due to the impacts of rigid masses.
Kober’s geosynclinal theory is based on the forces of contraction produced by the cooling of the earth. He believes in the contraction history of the earth. According to J.A. Steers (1932) “Kober is definitely a constructionist, contraction providing the motive force for the compressive stress”.
In other words, the force of contraction generated due to cooling of the earth causes horizontal movements of the rigid masses or forelands which squeeze, buckle and fold the sediments into mountain ranges.