Webseafloor spreading in British English. seafloor spreading. noun. a series of processes in which new oceanic lithosphere is created at oceanic ridges, spreads away from the ridges, and returns to the earth's interior along subduction zones. … Websea-floor spreading ( ˈsiːˌflɔː) n 1. (Geological Science) a series of processes in which new oceanic lithosphere is created at oceanic ridges, spreads away from the ridges, and returns to the earth's interior along subduction zones. Also called: ocean floor spreading

Seafloor Spreading - National Geographic Society

WebAdditionally spreading rates determine if the ridge is a fast, intermediate, or slow. As a general rule, fast ridges see spreading rate of more than 9 cm/year. Intermediate ridges … WebSep 20, 2024 · The surprising finding was that the ocean floor contained stripes of rock with different polarities. So, some of the stripes of ocean floor would have normal polarity, meaning that the minerals... hatching owls

Pangea - WorldAtlas

WebOct 14, 2024 · Sea floor spreading occurs when the two sides of a mid-ocean ridge move apart, leaving magma to fill the gap. Learn how to define sea floor spreading, discover how people learned about it, then... WebSeafloor spreading is not consistent at all mid-ocean ridges. Slowly spreading ridges are the sites of tall, narrow underwater cliffs and mountains. Rapidly spreading ridges have a much more gentle slopes. The Mid-Atlantic Ridge, for instance, is a slow spreading center. It spreads 2-5 centimeters (.8-2 inches) every year and WebMar 14, 2024 · seafloor spreading noun : the divergence at mid-ocean ridges of the tectonic plates underlying the oceans that is due to upwelling from the earth's interior of magma which solidifies and adds to the spreading plates Example Sentences Recent Examples on the Web Movement within it contributes to earthquakes, volcanos, and seafloor spreading. booth \\u0026 sons