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 most convincing evidence of sea floor spreading comes from.
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.
Some of the most convincing evidence confirming seafloor spreading has come from drilling directly into ocean floor sediment.
Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.
Seafloor spreading is the mechanism behind this phenomenon.
Evidence of sea floor spreading harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory.
The stripes alternate between those with magnetic material orientated toward magnetic north and those oriented in the opposite direction.
Age of deepest sediments thickness of ocean floor sediments verifies seafloor spreading.
Stripes of magnetic material in the seafloor provide strong evidence for tectonic theory.