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1 янв 1929 г. - Arthur Holmes

Описание:

Arthur's Theory is that the mantle goes under thermal convection. As magma is heated it tends to rise and then it cools and sinks again. At the time it received very little attention.

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12 ноя 2017
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Дата:

1 янв 1929 г.
Сейчас
~ 96 г назад