3 Kinds Of Evidence To Support Ocean Floor Spreading

List and describe the evidence for the plate tectonics theory.

3 kinds of evidence to support ocean floor spreading. 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. Interpreting diagrams how are these matching stripes evidence of sea floor spreading. Plate tectonics theory is taught in science classrooms around the world but just 50 years ago it was a hotly contested theory. The process of sea floor spreading.

Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. You might also like. Seafloor spreading rates are much more rapid in the pacific ocean than in the atlantic and indian oceans. 1 age of rock 2 magnetic stripes 3 molten material.

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. The glomar challenger a drilling ship built in 1968 gathered the samples. Abundant evidence supports the major contentions of the seafloor spreading theory. 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.

Sea floor spreading science. This is deep ocean floor. In a process taking tens of millions of years part of the ocean floor sinks back into the mantle at deep ocean trenches. At spreading rates of about 15 cm plate tectonics seafloor spreading britannica.

This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil. Evidence from drilling samples. What 3 types of evidence support sea floor spreading. The mid ocean ridge is the region where new oceanic crust is created.