The Most Convincing Evidence Of Sea Floor Spreading Comes From

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. Age of deepest sediments thickness of ocean floor sediments verifies seafloor spreading. The magnetism of mid ocean ridges helped scientists first identify the process of seafloor spreading in the early 20th century.

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Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.

The most convincing evidence of sea floor spreading comes from.

Evidence of sea floor spreading harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. Some of the most convincing evidence confirming seafloor spreading has come from drilling directly into ocean floor sediment. Most join two segments of a mid ocean ridge aid the movement of oceanic crustal material what is some of the most convincing evidence confirming that seafloor spreading has come from drilling directly into the ocean floor sediment. Stripes of magnetic material in the seafloor provide strong evidence for tectonic theory.

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. The stripes alternate between those with magnetic material orientated toward magnetic north and those oriented in the opposite direction. Seafloor spreading is the mechanism behind this phenomenon. This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes.

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