How do hotspot tracks provide evidence for the movement of plates over mantle plumes?

Post-rift magmatism associated with seafloor spreading (∼32 Ma to ∼15 Ma) and post-spreading tectonics (from ∼15 Ma to the present day) is widely ... 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 ... Our regional two-dimensional thermomechanical model with inclusion of melt generation and magmatic processes simulates deformation of the crust and upper mantle ... Mar 24, 2025 ... seafloor spreading ... seafloor spreading, theory that oceanic crust forms along submarine mountain zones, known collectively as the mid-ocean ... Variations in the subduction regime in the NE Pacific could have caused the sudden northwards motion of Greenland and subsequent Eurekan deformation. These ... Nov 29, 2023 ... Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection ... The Woods Hole Oceanographic Institution is dedicated to advancing knowledge of the ocean and its connection with the Earth system. Mar 3, 2025 ... Depending on what study you look at, the seafloor spreading can make everything from 100m to over 1000m of sea level change. In the paradigm of plate tectonics, seafloor spreading is viewed as a perfectly symmetrical process - whereby equal areas of new oceanic crust are created ... Apr 25, 2022 ... Seafloor spreading is the process of magma welling up in the rift as the old crust pulls itself in opposite directions. Cold seawater cools the ...