Ocean Sea Floor Spreading

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Ocean sea floor spreading. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur. 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. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.

This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. Maps and other data gathered during the war allowed scientists to develop the seafloor spreading hypothesis this hypothesis traces oceanic crust from its origin at a mid ocean ridge to its destruction at a deep sea trench and is the mechanism for continental drift. Scientists discovered that new molten materials from inside earth create new. The process of sea floor spreading.

World war ii gave scientists the tools to find the mechanism for continental drift that had eluded wegener. The mid ocean ridge is the region where new oceanic crust is created. The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed. Which statement accurately describes how magnetic stripes in ocean rock provide evidence of seafloor spreading.

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. The pattern of magnetic strips shows that the seafloor is expanding at mid ocean ridges. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level. These age data also allow the rate of seafloor spreading to be determined and they show that rates.

The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current. Seafloor spreading theory that oceanic crust forms along submarine mountain zones known collectively as the mid ocean ridge system and spreads out laterally away from them.