apartir The relief is a movement of continents and oceans, but this was not always so clear but, this result of the development of different theories developed over two centuries.
THEORY ONE: Scientific
wrote: Alferio wegener.
In: the 70 nineteenth century . Name
theory: continental drift.
theory: it specified that in the geologic past all the continents were united into a single called pangea. In turn, this continent was by a single ocean Panthalasa.
Over time the continent was divided in two, forming a northern continent called Laurasia and a southern Gondwana.
scientific justification for this hypothesis wegener use a data set.
- Geographic: Based on the coincidence of the shapes of the costs. Geological
- : Based on the similarities of the mountains on both sides of the Atlantic. Paleontological
- : Based on the coincidence of fossils.
Written in: the twenties of the twentieth century. Name
theory: plate tectonics.
Theory: states that the continents and oceans move to be located on plates. Each plate is a block that moves over the asthenosphere. Your see, each of the plates have an independent movement that takes place in different directions causing provided in three areas of contact.
1. Suduccion or convergence zone, are areas where one plate collides with the other producing the elevation and subsidence in the other plate.
2. Expansion areas, also called divergence are areas where separate producing low relief.
3. transformants border areas, are areas where plates move without producing side shocks or expansion
THEORY 3: wilson
Cycle Written: by WILSON
In: Theory
twentieth century, says that while the plates made different movements every 500 million years to become form a new pangea
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