History of Plate Tectonics
Category: Иное
Обновлено: 13 янв 2020
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Created byKaitlin Kidd
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Abraham Ortelius believed that the
tectonic plates separated the continents
through continental drift
and though that it was starting to push
the continents away to form new ones.
He noticed how the continents all fit
together when they were spread apart.Alfred Wegner noticed that the continents
were drifting away cut so that the pieces
could still fit together. He studied it a little bit
more and that convection currents split up
the pieces, which made the words that are now
known as...Continental Drift.Arthur Holmes discovered that there
were convection currents in the mantle.
Arthur said that the core heats the mantles
material causing it to rise all the way to the
crust. The mantles convection breaks the
lithosphere into tiny plates and move to
collide or break apart.Harry H. Hess made the theory of sea floor spreading.
When ocean plates separate it can cause fractures or
cracks in the lithosphere and cools the seafloor.
Seafloor spreading and the splitting of tectonic plates
cause mantle convection.Fredrick Vine and Drummond Matthews
made the discovery of magnetic stripes on
the ocean floor. The study of Earths older
magnetic field. Every 200,000 years Earths
magnets reverses. They are in an alignment
because of the materials that they contain.
The materials contain such things as metal.
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