Subduction Change The Ocean Floor

Asked by destiny on april 24 2015.

Subduction change the ocean floor.

Regions where this process occurs are known as subduction zones rates of subduction are typically measured in centimeters per year with the average rate of convergence being. Ocean warming evidence b c f a. The processes of subduction and sea floor spreading can change the size and shape of the oceans. Subduction of the ocean floor occurs in.

The deepest parts of the ocean floor are caused by plate tectonic subduction and occur where the sea floor sinks back into the mantle in a subduction zone. Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Because of this correlation between age and subduction potential very little ocean floor is older than 125 million years and almost none of it is older than 200 million years. For that geologists date and study continental crust.

Asked by anon on february 25 2020. A diver descends from a salvage ship to the ocean floor at a depth of 35 m below the surface. A calculate the guage pressure on the diver on the ocean floor. 3 get other questions on the subject.

These age data also allow the rate of seafloor spreading to be. Plate tectonics plate tectonics seafloor spreading. Melting glaciers and ice caps b. The density of ocean water is 1 025x10 3 kg m 3.

Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. The magnetism of mid ocean ridges helped scientists first identify the process of seafloor spreading in the early 20th century. Therefore seafloor dating isn t that useful for studying plate motions beyond the cretaceous. As plants meet their needs for making food from air soil water and the sun s energy in a process called there are plants called grow high in trees without here are words to put in the blanks.

As upwelling of magma continues the plates continue to diverge a process known as seafloor spreading. How does subduction change the ocean floor. Basalt the once molten rock that makes up most new oceanic crust is a fairly magnetic substance and scientists began using magnetometers to measure the magnetism of the ocean floor in the 1950s what they discovered was that the magnetism of the ocean floor around. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate.

A subduction cause magma to accumulate on the ocean floor b subduction causes oceanic crust to break into pieces c subduction causes the ocean floor to sink into deep ocean trenches. 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. That is the time it takes for new rock to form at the mid ocean ridge move across the ocean and sink into a trench.