Ocean Floor Spreading Diagram

The magnetism of mid ocean ridges helped scientists first identify the process of seafloor spreading in the early 20th century.

Ocean floor spreading diagram. This diagram provides evidence of seafloor spreading by showing the ages of ocean floor in the atlantic and eastern pacific oceans. The continents bordering the atlantic ocean for example are believed to be moving away from the mid atlantic ridge at a rate of 1 2 cm 0 4 0 8 inch per year thus increasing. A lowland in the ground caused by the seafloor spreading apart. The crust overlies the solidified and uppermost layer of the mantle the crust and the solid mantle layer together constitute oceanic lithosphere.

Ocean floor diagram quizlet diagram of the ocean floor model of sea floor spreading sea floor spreading worksheet. 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 oceanic crust is composed of rocks that move away from the ridge as new crust is being formed. Whats people lookup in this blog.

This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level. Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet. The process of sea floor spreading. This spreading creates a successively younger ocean floor and the flow of material is thought to bring about the migration or drifting apart of the continents.

An island that was made by volcanoes erupting from the ocean floor. The red colors are the youngest parts of the seafloor where fresh new crust is formed as lava seeps up from the deep interior of the earth at spreading ridges as new crust forms at these spreading ridges older crust colored green in the diagram moves away from. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur.

The mid ocean ridge is the region where new oceanic crust is created. The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current. Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate it is composed of the upper oceanic crust with pillow lavas and a dike complex and the lower oceanic crust composed of troctolite gabbro and ultramafic cumulates. A long deep depression in the ocean floor.