Plate Tectonics Continental Drift Spreading Centers Subduction Z

Plate Tectonics Seafloor Spreading Continental Drift Subduction Plate tectonics seafloor spreading, continental drift, subduction: as upwelling of magma continues, the plates continue to diverge, a process known as seafloor spreading. samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre—important evidence in favour of this process. these age data also allow the rate of seafloor. Plate tectonics refers to the process of plate formation, movement, and destruction. it finds its foundations in two theories, continental drift and sea floor spreading. continental drift describes the movements of continents over the earth's surface. sea floor spreading refers to the creation new oceanic plate material and movement away from.

Plate Tectonics Continental Drift Spreading Centers Subductio The key principle of plate tectonics is that the lithosphere exists as separate and distinct tectonic plates, which ride on the fluid like (visco elastic solid) asthenosphere. plate motions range up to a typical 10–40 mm year (mid atlantic ridge; about as fast as fingernails grow), to about 160 mm year (nazca plate; about as fast as hair grows). This page last updated on 26 aug 2015. plate tectonics is a theory developed in the late 1960s, to explain how the outer layers of the earth move and deform. the theory has caused a revolution in the way we think about the earth. since the development of the theory, geologists have had to reexamine almost every aspect of geology. Plate tectonics is the scientific theory explaining the movement of the earth’s crust. it is widely accepted by scientists today. recall that both continental landmasses and the ocean floor are part of the earth’s crust, and that the crust is broken into individual pieces called tectonic plates (fig. 7.14). the movement of these tectonic. Supporters of continental drift originally theorized that the continents moved (drifted) through unmoving oceans. seafloor spreading proves that the ocean itself is a site of tectonic activity. keeping earth in shape. seafloor spreading is just one part of plate tectonics. subduction is another. subduction happens where tectonic plates crash.