Sea Floor Is Created At Spreading Ridges And Destroyed

Sea floor spreading has to do with the crust forming at ocean ridges and being destroyed at deep sea trenches.

Sea floor is created at spreading ridges and destroyed. Earth s magnetic field is created primarily by the. As the magma is thrust up and hardens it forms new crust and the ocean floor on both sides of the mid ocean ridge move outward. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. A continental oceanic collision.

This boundary is connected with sea floor spreading. When the magma hardens it forms new oceanic crust that becomes welded to the original crust. New seafloor is formed at ridges and destroyed at trenches. Magma is pushed up through cracks in the crust along the mid ocean ridge.

Start studying sea floor spreading. At the spreading center liquid rock called basaltic magma rises from the earth s mantle as it upwells beneath the spreading axis. In 1962 hess proposed that the seafloor was created at mid ocean ridges spreading in both directions from the ridge system. Flow of liquid iron alloy in earth s molten outer core.

It was created on the sea floor. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. During the process of seafloor spreading. The andes mountains are a famous example of.

Rifting occurs at oceanic spreading ridges but not within continents because continents are so thick and strong. 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. Learn vocabulary terms and more with flashcards games and other study tools. A mid ocean ridge mor is a seafloor mountain system formed by plate tectonics it typically has a depth of 2 600 meters 8 500 ft and rises about two kilometers above the deepest portion of an ocean basin this feature is where seafloor spreading takes place along a divergent plate boundary the rate of seafloor spreading determines the morphology of the crest of the mid ocean ridge and its.

Sea floor spreading occurs when the sea floor spreads apart along divergent boundaries and forms the mid ocean ridge. Spreading rates determine if the ridge is fast intermediate or slow.