Tagged: Isostacy

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Concept of Isostasy by Holmes

Arthur Holmes assumed that  upstanding crustal parts are made of lighter materials  and in order to balance them major portions of these higher columns are submerged in greater depth of lighter materials. According to...

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Concept of Isostasy by Joly

 Joly presenting his concept of isostasy in the year of 1925. He disapproved the view of Hayford and Bowie about the existence of the level of compensation at the depth of 100km, because, according...

Concept of Isostasy by Hayford and Bowie 2

Concept of Isostasy by Hayford and Bowie

The concept of isostasy by Hayford and Bowie is almost similar to the concept of Pratt. According to the concept of isostasy by Hayford and Bowie, there is a plane where there is complete...

Concept of Isostasy by Pratt 0

Concept of Isostasy by Pratt

Pratt  started studying  the rocks of the Himalaya and its neighbouring plains, when he was studying the difference of gravitational deflection of 5.236 during the geodetic survey of Kaliana and kalianpur. Pratt found that...

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The concept of Isostasy by Airy

Sir George Airy opined that the inner part of the mountain can not be hollow, rather the excess weight of the mountains are compensated by the lighter materials below. According to the concept of...

Global Isostatic Adjustment 0

Global Isostatic Adjustment

It can be thought that the crustal parts have a tendency to rise or sink gradually until they are balanced by their weight of the displaced mantle rocks. This concept of vertical movement to...

Discovery of the concept of isostasy 0

Discovery of the concept of isostasy

Though the concept of isostasy came in the mind of the geologists all of a sudden, but, discovery of the concept of isostasy came out due to gradual thinking in terms of gravitational attraction of...

Gravity Anomalies 0

Gravity Anomalies

Gravity Anomalies involve the comparison of the observed value of gravity with a calculated value. Or in other words a departure of gravity values from those at the theoretical surface of an uniform earth,...

Compensation in Isostasy 0

Compensation in Isostasy

Any loading due to sedimentation, deposition or intrusion of igneous materials, etc. or unloading due to denudation or melting of ice will disturb the balance. Compensation in the form of depression or elevation will...

Concept of Isostasy 0

Concept of Isostasy

The word Isostasy is derived from a Greek word ‘Isostasios’, meaning ‘in equipoise’  or  ‘in balance’. The theory of isostasy states that a great continental mass must be formed of lighter materials than that...