120119a-PlateTectonics-STARTR - 1/19/12! Pinnipeds...

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Unformatted text preview: 1/19/12! Pinnipeds (Pinnipedia)! (fin-footed)! 1. Seals: ! (Phocidae)! earless! claws! Mark R. Boardman! http://animals.nationalgeographic.com/animals/photos/seals-and-sea-lions/! Pinnipeds (Pinnipedia)! (fin-footed)! 2. Sea Lions:! (Otariidae) ! eared! longer neck! Pinnipeds (Pinnipedia)! (fin-footed)! 3. Walrus:! (Odobenidae) ! tusks! mobility! http://animals.nationalgeographic.com/animals/photos/seals-and-sea-lions/! http://animals.nationalgeographic.com/animals/photos/seals-and-sea-lions/! Sea Otters (Mustelidae)! Marine! Fur ! (not blubber)! Teeth! PATTERNS ? http://bioweb.uwlax.edu/! http://animals.nationalgeographic.com/animals/photos/seals-and-sea-lions/! 1! 1/19/12! PATTERNS ? patterns of bathymetry PATTERNS ? PATTERNS ? patterns of earthquakes PATTERNS ? PATTERNS ? patterns of volcanism Land Elevation? Sediment thickness? Patterns of time? Are there other "patterns" 2! 1/19/12! Is there a single model that can explain these very different patterns? Will that model (theory) also explain future patterns? Yes. There is a single model. PLATE TECTONICS : VERTICAL AND HORIZONTAL and TEMPORAL PATTERNS Hmmm ... What if ... Fit or not? Fig. 3-3, p. 51 3! 1/19/12! Overlaps (red) Underlaps (blue) Is there a "fit" of the continents, or not? ca. 1915 Overlaps (red) Underlaps (blue) Is there a "fit" of the continents, or not? Glacial features: grooves, striations What if .... Antarctica Australia Fig. 3-4, p. 51 4! 1/19/12! Is there a clear and simple hypothesis to explain all the observations? YES, Distribution of ICE and COAL and FOSSILS and DESERTS have a pattern ..... ..... IF there is a reconstructed fit of the continents. Why do these patterns exist? What controls the patterns? Maybe the outside of Earth is controlled by (or linked to) processes acting inside our planet. What is "inside" the earth? How do we "see" inside the earth? https://www.llnl.gov/str/Walter.html 5! 1/19/12! Seismic observations (earthquakes) Shear waves (S- waves) P - Waves Push / pull; compression/ relaxation http://www.indiana.edu/~geol116/ http://www.indiana.edu/~geol116/ http://www.indiana.edu/~geol116/ 6! 1/19/12! PATTERNS ? END LECTURE 12-01-19 7! ...
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