WebD. Hot magma flows up at a point where a tectonic plate has been stretched thin. ... But some volcanoes occur not at the edges, but in the middle of a continental or oceanic plate.The Hawaiian Islands, for example, are thousands of kilometers away from any plate boundary.And yet you have vast amounts of magma, molten rock or lava, flowing up ... WebSep 23, 2024 · Due to the mass, the lithosphere below oceanic plates compacts, making the oceanic plate much thinner than a continental plate. Continental plates are composed of lighter rock, so the lithosphere ...
Subduction Zones & Processes What is Subduction? - Video
WebApr 5, 2024 · While oceanic plates cover far more area, they are much thinner than continental crust. Despite their greater density, oceanic plates average only about four or five miles in thickness, compared to an average of 25 miles for continental plates; under … There are several differences between quartzite and granite. Granite gets its … The theory of plate tectonics is a widely accepted scientific theory that has wide … Of the three layers of the Earth -- the inner core, the mantle or middle layers, and the … Plate tectonics is a geological theory that explains the phenomenon of continental … WebKey points: There are two types of tectonic plates: oceanic and continental. Oceanic plates make up the ocean floor. Continental plates make up the continents. Both oceanic and continental plates are topped by crust. On average, oceanic crust is denser than … he took my childhood in his stride
Continental crust Composition, Density, & Facts Britannica
WebModule 5 - Plate Tectonics. No oceanic crust older that 180 million years; Thin sediment accumulations in deep-ocean basins The Lithosphere; Lithosphere is the crust and uppermost (coolest) mantle; Oceanic lithosphere varies in thickness; Thin at ridges, up to 100 km thick; Mafic composition; More dense than continental lithosphere WebMay 5, 2024 · A rundown on some important distinctions between continental and oceanic crust. WebDec 27, 2024 · They are less dense and more felsic than an oceanic plate. Continental crust has a higher silica content than oceanic ... the crust will be as thin as 30 km. Continental crust is not easily ... he took my feet from the miry clay