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Arthur Holmes-The mantle undergoes thermal convection. The basalt in the mantle heats up then goes down under than back up to the surface. When the magma cools the result is stripes on the ocean floor. (21 фев 1929 г. – 9 ноя 1929 г.)
Добавлено на ленту времени:
12 янв 2018
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Sophie Dixon
Дата:
21 фев 1929 г.
9 ноя 1929 г.
~ 8 months