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Continental drift and evidence. - Coggle Diagram
Continental drift and evidence.
HISTORY
Until the XIX century, everyone thought that the Earth did not change since it's creation
In 1910, Frank Taylor proposed the firts theory about the movement of the continets. But, he was unable to obtain enough evidence
Alfred Wegener was a german geophysic and meteorologist, who raised the theory about the Continental Drift.
Evidences that Wegener didn't find
Abyssal plains: Flat seafloor area at an abyssal depth (2000-5000 m). They present an irregular topography with small mountains, volcanoes and dips, called ocean trenches.
Ocean ridges:Thay are mountain chains created by volcanoes under the water. There is a large top-to-bottom cleft called rift.
Continental shelf:a broad, relatively shallow submarine terrace of continental crust forming the edge of a continental landmass.
Lithosphere
The lithosphere is created when magma rises to the surface through the rift, then cools and solidifies.
There, the rocks penetrate the matle and melt
PANGEA
Palaeontological evidence: Similar fossil have been foun.
Geographical evidence: Continents fits like puzzle.
Paleoclimate evidence: Sedimentary rocks conclude that once theu were joined.
Geological evidence: Some montains present geologycal continuity
