Continental drift plate tectonics theory. In particular, the English geologist Arthur Holmes proposed in 1920 that plate junctions might lie beneath the sea, and in 1928 that convection currents within the mantle might be the driving force. Holmes' views were particularly influential: in his bestselling textbook, "Principles of Physical Geology," he included a chapter on continental drift, proposing that Earth's mantle contained convection cells which dissipated radioactive heat and moved the crust at the surface. Holmes' proposal resolved the phase disequilibrium objection (the underlying fluid was kept from solidifying by radioactive heating from the core). However, scientific communication in the '30 and
Ice Age: Continental Drift accompanied by the short animated film "The Longest Daycare" featuring Maggie Simpson. As a promotion for "Ice Age: Continental Drift", Fox released two 3-minute short segments from the film, titled "Scrat's Continental Crack-up" and "Scrat's Continental Crack-up: Part 2". The first part premiered as a theatrical release attached to "Gulliver's Travels" in 2010, and it was released on-line on January 6, 2011, on iTunes Movie Trailers. The second part was released on November 16, 2011, on iTunes, and debuted in theatres with "". The first part shows how the Scrat's actions lead to split of the continents, while in the