3 Kinds Of Evidence To Support Ocean Floor Spreading

1 age of rock 2 magnetic stripes 3 molten material.

3 kinds of evidence to support ocean floor spreading.

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. The final proof of sea floor spreading came from rock samples obtained by drilling into the ocean floor. What 3 types of evidence support sea floor spreading. Abundant evidence supports the major contentions of the seafloor spreading theory.

Interpreting diagrams how are these matching stripes evidence of sea 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. Sea floor spreading science. You might also like.

Evidence from drilling samples. Shortly after the conclusion of world war ii sonar equipped vessels crisscrossed the oceans collecting ocean depth profiles of the seafloor beneath them. Seafloor spreading rates are much more rapid in the pacific ocean than in the atlantic and indian oceans. In a process taking tens of millions of years part of the ocean floor sinks back into the mantle at deep ocean trenches.

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 mid ocean ridge is the region where new oceanic crust is created. The glomar challenger a drilling ship built in 1968 gathered the samples.

3 types of evidence of sea floor spreading. At spreading rates of about 15 cm plate tectonics seafloor spreading britannica. List and describe the evidence for the plate tectonics theory. Plate tectonics theory is taught in science classrooms around the world but just 50 years ago it was a hotly contested theory.