What are the forces that drive sea spreading?

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. ... 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 ... 2 cm * 475 km/cm = 950 km = 95,000,000 cm = 9.5 * 107 cm · 65 million years = 65,000,000 years = 6.5 * 107 years. Students to use real-world data and the TecRocks Explorer to investigate structures and rock ages on the seafloor. Students connect these data to the theory of ... Dec 9, 2024 ... Southend-on-Sea spreading holiday joy to children in need with Toy Drive · new toys, suitable for girls, boys and babies up to the age of 17 ... Sep 3, 2022 ... This hypothesis traces oceanic crust from its origin at a mid-ocean ridge to its destruction at a deep sea trench and is the mechanism for continental drift. 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 ... 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 ... Apr 10, 1993 ... Updated interpretation of magnetic anomalies and seafloor spreading stages in the south China Sea: Implications for the Tertiary tectonics of ... Variations in the subduction regime in the NE Pacific could have caused the sudden northwards motion of Greenland and subsequent Eurekan deformation. These ...