Although it is now the prevailing theory, the road to acceptance has been long and bumpy for plate tectonics, which describes how large parts of the Earth's crust slide, grind, rise and sink very slowly through its clay mantle, according to the study published in the journal Science. "We knew that geological deformations such as faults occur in the interior of continental plates far from the oceans, but we didn't know that the same thing was happening to ocean plates," adds first author Erkan Gun, also an earth scientist at the University of Toronto. For decades, scientists have been rewriting their understanding of the seafloor, so this new study is just a continuation of their efforts to map the ocean's rugged terrain. In the 1950s, the pioneering work of ocean cartographer Mary Tharp, to map large portions of the seafloor using... Sonar data from warships suggests that ocean basins were never as flat as scientists had suspected. But far beyond these plate boundaries, at the center of the oceanic plates, scientists believed that large parts of the Earth's crust remained more or less rigid as they drifted above the mantle. They did not deform like plate edges. To do this, Gunn, Biskelewic, and their colleagues collected data on two oceanic plateaus located between Japan and Hawaii, called the Shatsky Ridge and the Hesse Ridge, and the Ontong Java Plateau, north of the Solomon Islands. and the Manihiki Plateau, to the northeast of Fiji and Tonga. Given the challenges of surveying the seafloor, their study was limited to these four plateaus in the western Pacific Ocean for which data were available. “It was thought that because the plateaus under the ocean are thicker, they should Be stronger." “But our models and seismic data show that it is actually the opposite: the plateaus are weaker.” While acknowledging that they have only analyzed four plateaus in the Pacific Ocean, the researchers hope that their findings will stimulate further exploration to map the sea floor. New Study: A Cosmic Phenomenon Exciting creatures that can destroy life forms on Earth