Massive rearrangements of Earth's continents including decreased CO2 levels caused the abrupt formation of the Antarctic ice sheet, demonstrates a new research.
The researchers from University of New Hampshire has shown that the most likely explanation for the initiation of Antarctic glaciation during a major climate shift 34 million years ago.
Matthew Huber of the UNH Institute for the Study of Earth, Oceans, and Space and department of Earth said that the Eocene-Oligocene transition was a major event in the history of the planet and their results really flipped the whole story on its head.
Huber asserted that one of the things they were always missing with their CO2 studies, and it had been missing in everybody's work, is if conditions were such to make an ice sheet form, perhaps the ice sheet itself was affecting ocean currents and the climate system that once one start getting an ice sheet to form, maybe it became a really active part of the climate system and not just a passive player.
The study is published in Nature.