Brand new magnetized north and you will southern area posts reverse thanks to go out, and you will, especially important into the paleotectonic knowledge, the brand new relative position of your own magnetic north rod varies using date

• Plates from lithosphere circulate on account of convection currents on the mantle. One kind of action is actually created by seafloor distributed.
• Dish borders can be located by the discussing disturbance epicenters.
• Dishes interact in the three variety of plate boundaries: divergent, convergent and alter.
• All of the World’s geologic passion takes place in the dish borders.
• From the an effective divergent line, volcanic passion produces a middle sea ridge and you will short earthquakes.
• In the a beneficial convergent boundary that have a minumum of one meilleurs sites de rencontre américains oceanic plate, a water trench, a string of volcanoes expands and several earthquakes are present.
• Within an effective convergent border where one another dishes is actually continental, slope ranges grow and you can earthquakes are common.
• During the a change border, discover a transform fault and substantial earthquakes occur however, there are no volcanoes.
• Process pretending over-long durations do Earth’s geographical keeps.

Developing the theory

In accordance with almost every other previous and you may contemporaneous proposals, inside 1912 new meteorologist Alfred Wegener profusely demonstrated just what he entitled continental drift, longer inside the 1915 guide The origin from Continents and you may Waters , and medical debate started that would end up fifty age later on from the concept of plate tectonics. (more…)