Convection Current Theory by Arthur Holmes in Hindi | Geography

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27.4 هزار بار بازدید - 3 سال پیش - Video Title: Arthur Holmes convection
Video Title: Arthur Holmes convection current theory in Hindi

About Video: History of Arthur Holmes:
Arthur Holmes postulated convection current theory in the year 1928–29. It is the widely accepted driving mechanism for Continental drift(moving apart) which lead to the foundation of modern plate
tectonics.

The convection current theory summary and analysis video also contain:
1) These currents are generated due to radioactive elements causing thermal differences in the mantle.
2) Convectional Current The theory is the soul of Sea Floor Spreading theory.
3) The origin of thermal convective currents within the earth depends on the presence of radioactive elements in the rocks. The disintegration of radioactive elements generates heat which causes convective currents.

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Queries asked by UPSC aspirants about The two factors convective currents depend on.

✔ The thickness of the crust near the equator and the poles, and
✔ Uneven distribution of radioactive elements in the crust.


Topics Covered:

1) Wherever rising limbs of these currents meet, oceanic ridges are formed on the seafloor

2) wherever the failing limbs meet, trenches are formed Continuous compression and sedimentation cause gradual subsidence of geosynclines. Holmes has described a cyclic pattern of thermal convective currents which includes the origin of convective currents, formation of geosynclines, sedimentation and orogenesis, and a further rise in the mountains.

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3 سال پیش در تاریخ 1400/02/26 منتشر شده است.
27,450 بـار بازدید شده
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