continential drift theory Flashcards
who theorized about the continential drift?
alfred lothar wegener
what year did wegener propose the continential drift theory?
1912
what is the continential drift theory?
a theory that states that the earth’s continents have moved over geologic time relative to each other, thus appearing to have “drifted” across the ocean bed
what did alexander von humboldt theorize?
he theorized that the lands bordering the atlantic ocean had once been joined
what did antonio snider-pellegrini theorize?
identical fossil plants in both north america and european coal deposits
what did frank b. tylor theorize?
notion of continential collision to explain the formation of some of the world’s mountain ranges
what is the pangea/pangaea supercontinent?
pangaea existed about 240
million years ago. by about 200
million years ago, this supercontinent began breaking up.
what was the names of pangea/pangaea’s halves?
laurasia and gondwana
what evidence of the continential drift theory states the coastlines of the continents appear to fit together like the pieces of a puzzle?
apparent fit of the continents
what evidence of the continential drift theory states that identical fossils have been found in the rocks on either side of the ocean?
fossil correlation
what were the same fossils found in different continents?
mesosaurus, cynognathus, lystrosaurus, glossopteris plant, european flora
what evidence of the continential drift theory states that identical rocks and mountain structures have been found on either side of the ocean?
rock and mountain correlation
what evidence of the continential drift theory states that coal has been found in cold regions and glacial evidences have been found in warm regions?
paleoclimate data
