What are the different types of seismic waves and how are they used to study Earth's interior?

seafloor spreading data. The advantages of the new experiment are that it provides the first continuous least squares model description of plate motions ... Aug 1, 2009 ... Our models show that a high average seafloor spreading rate of 92 mm/a in the Early Cretaceous that decreased to 60 mm/a during the Tertiary, ... Jan 10, 1981 ... ... seafloor spreading. | OSTI.GOV. ... Sea prior to the establishment of a mid-ocean ridge. It is suggested that the development of a new ocean ... Seafloor spreading is the mechanism that Wegener was looking for! Convection currents within the mantle drive the continents. Dec 1, 2018 ... Although the seafloor spreading Hess initially proposed was a virtually amagmatic process, little attention has been paid to that ... Mar 24, 2025 ... seafloor spreading ... seafloor spreading, theory that oceanic crust forms along submarine mountain zones, known collectively as the mid-ocean ... Spreading of the Ocean Floor: New Evidence: Magnetic anomalies may record histories of the ocean basins and Earth's magnetic field for 2 × 108 years. F. J. ... Apr 22, 2022 ... Seafloor spreading that creates crust slowed 35%, growing mountains may be driving it: Study ... Seafloor spreading rates have slowed down by ... ... seafloor. At the same time the existing seafloor spreads (seafloor spreading) and presses the Earth's surface, including the continents, apart. In so-called ... Seafloor Spreading is the usual process at work at divergent plate boundaries, leading to the creation of new ocean floor. As two tectonic plates slowly ...