ocean bed suggested by Alfred Wegner as part of his wider theory on plate tectonics. The plate tectonic theory suggested by Alfred Wegner in 1915 was that millions of years ago all the continents were joined together in one mass of land called ‘Pangaea’‚ the evidence for this was that coal was found on Antarctica‚ the shape of Africa and south America fit together and same fossils were found on different continents. This theory is used to explain the distribution of earthquakes‚ volcanoes and Fold
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OUTDOOR ED EXAM REVISION Unit 3 AOS1 Plate Tectonics: ⁃ Pangaea ⁃ 160 million years ago Pangaea split forming Laurasia and Gondwana 3 factors that have influenced the evolution of Australia… Biological Isolation: Flora and fauna has been able to adapt over millions of years in isolation. It has been able to adapt without the influence of predators. That is why Australian fauna is very susceptible to introduced species. EG. The fact that Kangaroos have roamed around for many years
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by Christopher Columbus. Roughly 250 million years ago‚ the world consisted of a single giant landmass now known as Pangaea. Physical forces broke Pangaea separately‚ creating the continents and hemispheres well-known today. Over the eons‚ the separated corners of the earth urbanized wildly diverse suites of plants and animals. Columbus’ voyages brought together the seams of Pangaea. Alfred W. Crosby called the Columbian Exchange; the world’s long-separate ecosystems unexpectedly collided and varied
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Aachenosaurus – actually a piece of petrified wood Aardonyx "Abdallahsaurus" – nomen nudum‚ probably Brachiosaurus or Giraffatitan Abelisaurus Abrictosaurus Abrosaurus Abydosaurus Acanthopholis Achelousaurus Achillesaurus Caenagnathus – probable junior synonym of Chirostenotes Calamosaurus Calamospondylus Fox‚ 1866 "Calamospondylus" Lydekker‚ 1889 – preoccupied name‚ now known as Calamosaurus Callovosaurus LONGEST The longest dinosaurs were sauropods; they were gigantic‚ slow-moving
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Chapter 11 The first Paleozoic orogeny to occur in the Cordilleran mobile belt was the: | c. Antler | | Extensive cratonic black shales were deposited during what two periods? | d. Late Devonian-Early Mississippian | | The main economic deposit of a cyclothem is: | a. coal | | During the Late Kaskaskia (Cratonic Sequence 3)‚ what type of deposition predominated on the craton? | e. carbonates | | Which orogeny was not part of the closing of the Iapetus Ocean
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broke off from Pangaea‚ opening up the oceans‚ and forming the land masses we know today. More continental activity formed mountain ranges‚ but after the Great Ice Age the land was depressed and opened up much of the lakes and rivers we know today. - 225 MYA to 2 MYA‚ 10‚000 YA SFI: Identical species of fish found amongst various continents in freshwater lakes. Folding/shifting of earths crust Grinding and melting of ice on rock Themes: Environment Separation of Pangaea The Great Ice Age
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Geology of Co. Louth (Sedimentaryrock; Clogherhead) (Folds in the Clogherhead Formation.) Sedimentary Rocks: These rocks there are three basic categories of sedimentary rocks. Students should know how each type is formed and be able to give examples of each. Sedimentary rocks form in layers (bedding planes). The three groups of sedimentary rocks are: Sedimentary rocks are formed on or near the surface of the earth. They develop in layers called strata these are formed by compressed sediments
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Part 1 of 1 - 100.0/ 100.0 Points Question 1 of 22 4.0/ 4.0 Points Who proposed that all of the present continents were once joined together in a single supercontinent called Pangaea? A.Alfred Wegener B.Charles Darwin C.Arthur Holmes D. Harry Hess Answer Key: A Question 2 of 22 4.0/ 4.0 Points The scientific community rejected the theory of plate tectonics because Alfred Wegener could NOT A.identify a mechanism to move the continents. B.disprove competing theories
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often differs from the climate of today. Those evidences lead him to publish Wegenerfs theory of gcontinental drafth in 1915. In the book The Origin of Continents and Oceans‚ he wrote about 300 million years ago‚ continents were a single mass‚ Pangaea‚ which had split and lifted‚ and the pieces had been moving since then. However‚ his theory was lack of explanation of how the continents move. He explained it that it was through the earthfs crust and centrifugal and tidal forces that move the
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An artist’s reconstruction of Nyasasaurus‚ which is either the earliest known dinosaur or a close relative. Credit: Copyright Natural History Museum‚ London/Mark Witton Paleontologists think that they may have identified the earliest known dinosaur‚ which was no bigger than a Labrador retriever and lived 243 million years ago‚ during the Triassic Period. This is 10 million years earlier than the previously oldest known dinosaurs‚ and could change researchers’ views of how they evolved. The
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