Holmes theorized that convection currents move through the mantle the same way heated air circulates through a room, and radically reshape the Earth's surface in the process.
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This repeated heating and cooling results in a current which may be enough to cause continents to move. Arthur Holmes suggested that this thermal convection ...
Duration: 5:09
Posted: Apr 26, 2021
Posted: Apr 26, 2021
Convectional Current Theory talks about the possibilities of mantle convection currents. Radioactive elements in the mantle cause thermal variations, ...
Convection currents which themselves move their boundaries and the sources of much of the heat responsible for their existence can clearly lead to periodic ...
It was the search for a heat release mechanism that led Holmes to entertain the idea of some kind of convection process being responsible, which would at the ...
Holmes primary contribution was his proposed theory that convection occurred within the Earth's mantle, which explained the push and pull of continent plates ...
Both Holmes and Jeffreys believed that convection would proceed in the substratum until radioactive material had been completely transferred to the crust.
Currents of heat and thermal expansion in the Earth's mantle, he suggested, could force the continents toward or away from one another, creating new ocean floor ...
Feb 27, 2016 · The current convection idea is at the heart of the seafloor spreading theory. According to this idea, the extreme heat produced by radioactive ...
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