WebMagnetic anomalies in rocks on the seafloor can be used to figure out how old the seafloor is. When magma rises from the Earth's mantle and turns into rock on the ocean floor, it records the direction of the Earth's magnetic field at the time.The Earth's magnetic field has changed many times in the past, so the pattern of magnetic reversals in ... WebThe majority of the system is underwater, with an average water depth to the top of the ridge of 2,500 meters (8,200 feet). Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as …
Continental Movement by Plate Tectonics manoa.hawaii.edu ...
WebBy explaining both the zebralike magnetic striping and the construction of the mid-ocean ridge system, the seafloor spreading hypothesis quickly gained converts and represented another major advance in the … WebExplain the process of sea-floor spreading . Convection currents deep inside the mantle causes spreading. Define crust . Lithosphere; the outer layer of the earth . ... Describe how The Hawaiian islands may have formed from a hotspot. As the tectonic plates move, volcanoes can form. They can form in the middle of a plate where magma rises and ... signs of a pinched neck nerve
Seafloor spreading - Wikipedia
WebIn 1965, a Canadian geophysicist, J. Tuzo Wilson, combined the continental drift and seafloor spreading hypotheses to propose the theory of plate tectonics. Tuzo said that Earth’s crust, or lithosphere, was … WebSeafloor Spreading is the usual process at work at divergent plate boundaries, leading to the creation of new ocean floor. As two tectonic plates slowly separate, molten material rises up from within the mantle to … WebJan 16, 2024 · Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain … the range store feedback