3 Kinds Of Evidence To Support Ocean Floor Spreading

Plate tectonics theory is taught in science classrooms around the world but just 50 years ago it was a hotly contested theory.

3 kinds of evidence to support ocean floor spreading.

The mid ocean ridge is the region where new oceanic crust is created. First samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid ocean ridge is approached and the. The glomar challenger a drilling ship built in 1968 gathered the samples. Abundant evidence supports the major contentions of the seafloor spreading theory.

In a process taking tens of millions of years part of the ocean floor sinks back into the mantle at deep ocean trenches. 1 age of rock 2 magnetic stripes 3 molten material. 3 types of evidence of sea floor spreading. The process of sea floor spreading.

You might also like. Seafloor spreading rates are much more rapid in the pacific ocean than in the atlantic and indian oceans. List and describe the evidence for the plate tectonics theory. Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory.

Sea floor spreading science. Shortly after the conclusion of world war ii sonar equipped vessels crisscrossed the oceans collecting ocean depth profiles of the seafloor beneath them. Interpreting diagrams how are these matching stripes evidence of sea floor spreading. This is deep ocean floor.

What 3 types of evidence support sea floor spreading. The idea that the earth s crust is made up of huge tectonic plates that are floating on an ocean of molten hot magma seemed too. This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil. The survey data was used to create three dimensional relief maps of the ocean floor and by 1953 american oceanic cartographer marie tharp had created the first of several maps that revealed the presence of an underwater mountain range.