lithosphere research

13 Aug 2017

At ... researchers at the University of Southampton have been looking at the thickness of Earth's continents (results published in the journal Science) by using seismic reflections to gain a better understanding of craton boundaries. The Earth's lithosphere includes the oceans, crust, and portions below this, which sit upon the Mantle. The lithosphere includes the continents - but how thick are they? They mkae use of seismic waves generated naturaly by hundreds of earthquakes. Thick rigid continents rest on a less solid underlying Mantle. It is necessary the continents do not have long roots as this would throw into question Plate Tectonics theory. Seismic tomography supports a deeper and thicker crust than assumed till now. What the implications of this research is will remain to be seen.