What is the concept of the mantle wedge in subduction zones?

Feb 26, 2024 ... This paper summarizes the basic understanding about the dynamic mechanisms of global asymmetric seafloor spreading and ridge jumps and reviews the related ... Mar 24, 2025 ... seafloor spreading ... seafloor spreading, theory that oceanic crust forms along submarine mountain zones, known collectively as the mid-ocean ... Apr 23, 2021 ... We use a compilation of earthquake and vertical gravity gradient data together with high-resolution bathymetry to show that ocean spreading is occurring ... Apr 3, 2008 ... The grids include data from all the major ocean basins as well as detailed reconstructions of back-arc basins. The age, spreading rate, and ... Active margins are sensitive to several subduction-related processes which include rapid opening and closure of neighboring basins. The stages of rifting, ... ... seafloor. At the same time the existing seafloor spreads (seafloor spreading) and presses the Earth's surface, including the continents, apart. In so-called ... formed since ~6 Ma by westward stepping seafloor spreading following the rifting of continental and arc lithosphere. The N-S striking Moresby Transform divides ... Mar 2, 2025 ... Ancient seafloor spreading 15 million years ago caused sea levels to plummet ... Between 15 million and 6 million years ago, a drop in ocean crust ... Sep 25, 2008 ... Muller, R.D., M. Sdrolias, C. Gaina, and W.R. Roest 2008. Age, spreading rates and spreading symmetry of the world's ocean crust, Geochem. Seafloor Spreading at Mid-Ocean Ridges. Convection currents drive the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle. In ...