Like a raft (crust) floating on a lake (mantle) boy on a raft - dboy 6. The earth’s outer shell is composed of plates that move a little bit every year. Keywords to listen for: Pangaea Geological Biological Mesosauraus Limestone Convection Current 3. In addition to the fit of the continents and the fossil evidence, Wegener relied heavily on matching geological patterns across oceans, such as sedimentary strata in South America matching those in Africa (Fig. Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Tags: Question 4 . Putting these two words together, we get the term plate tectonics, which refers to how the Earth's surface is built of plates. 300 seconds . 0. Question 1. In the early 1900s Alfred Wegener, a German Earth Scientist proposed the idea that the continents as we believe are not stationary, but as a matter of fact, have been drifting about on the earth’s surface over millions of years of geologic time. Earth’s internal processes were previously thought to operate in a vertical fashion, with continents, oceans, and mountain ranges bobbing up and down, without much sideways movement. Geological Fit. This far reaching theory has become the basis for viewing most geologic processes — mountain building, paleontology, volcanism, earthquakes, etc. Evidence for Plate Tectonics The continents fit together almost like puzzle pieces forming Pangaea (one super-continent). Plate tectonics theory predicts the locations of earthquakes, volcanoes, mountain ranges, ore deposits, and other geological phenomena. Plate Tectonics Theory. Third, the evidence and understanding of Earth that would have supported plate tectonic theory simply didn’t exist until the middle of the 20th century. Walter Alvarez, Geologic evidence for the plate‐driving mechanism: The continental undertow hypothesis and the Australian‐Antarctic discordance, Tectonics, 10.1029/TC009i005p01213, 9, 5, … convergent. In fact. Fossil Evidence % The term plate tectonics was first used by Tuzo Wilson, of the University of Toronto but the Plate Tectonics theory was first published by W.J Morgan of the Princeton University in 1962.. One theory is that these piles are stable for long geological periods and their edges correspond with the position of key features involved in plate tectonics on Earth’s surface, such as supervolcanoes. This theory explained many pieces of the puzzle that scientists had observed, for example, continental fit, matching geology, past glaciation, movements of the ocean floor and the location of fossils of ancient animals and plants. What is the evidence for Plate Tectonics? Plate movements are responsible for most continental and ocean floor features and for the distribution of most rocks and minerals within Earth's crust. The comprehensive theory which tries to explain most of the dynamism of earth crust and features of the endogenetic forces.. SURVEY . Which choice is NOT a type of plate boundary? SURVEY . Geologists from across the world presented circumstantial evidence that the continents were once joined. Geologic activity around the plate boundaries on the ocean floor provide evidence of plate tectonics. Geophysicists uncover new evidence for an alternative style of plate tectonics by University of Toronto Cave city in volcanic rocks of uplifted Central Anatolian plateau. Studies of lava flows in Europe during the 1950s and later in North America showed a change in the orientation of the magnetic field with the age of the lava. all of the following are evidence supporting the theory of plate tectonics except for. 300 seconds . 2. Modern continents hold clues to their distant past. But the acceptance of continental drift and other evidence for large lateral motions changed all that. 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