WebWith active tectonic spreading, the MAR is the site of frequent earthquakes. Spectacular hydrothermal vents may form where magma provides heat as it rises to the seafloor. These vents are known to support diverse chemosynthetic communities. However, little is known about life at these sites once vents go extinct, or what life lies beyond the ... WebSep 27, 2024 · Seafloor spreading is a geologic process in which tectonic plates —large slabs of Earth's lithosphere —split apart from each other. Seafloor spreading and other tectonic activity processes are the result of mantle convection. Mantle convection is the … Level I and Level II Grant proposal submissions are due by 11:59 p.m. EDT … Engage with National Geographic Explorers and transform learning experiences … The National Geographic Museum is an ideal destination for curious people of all …
Plate Tectonics Flashcards Quizlet
WebMar 21, 2024 · Seafloor Spreading. Also called seafloor spread, seafloor spreading is a geological process by which new oceanic crust forms at mid-ocean ridges through volcanic activities and then slowly moves away from the ridges. Seafloor spreading occurs at divergent boundaries where the tectonic plates move away from each other, resulting in … WebSeafloor spreading takes place at midocean ridges and produces basalt, the rock that makes up the oceanic crust. The Mid-Atlantic Ridge and East Pacific Rise are examples … slack team id
what evidence supports the theory of seafloor spreading ...
WebMar 29, 2024 · Sea floor spreading further supports the continental drift theory. As molten rock rises from the Earth, it forms new crust between the plates. When this occurs, the sea floor grows wider, pushing the two continents apart. Sea floor spreading indicates that since the continents presently move apart, previous continental drift was possible … WebSupporting Wegener’s theory of continental drift, Hess explained how the once-joined continents had separated into the seven that exist today. The continents don’t change dramatically or move independently, but are transported by the shifting tectonic plates on which they rest. The theory also explained Hess’s puzzling guyots. WebSeafloor Features. Here are some of the major features of seafloors: Mid-ocean ridges: underwater mountain ranges that rise miles from the deep seafloor. Rift zones: zones in … slack theory