GEO 303 Lecture Notes - Lecture 2: Bathymetry, Meteorology, Supercontinent

• School: UT-Austin
• Department: Geological Sciences
• Course: GEO 303
• Professor: T Shanahan

Document Summary

* alfred wegener : : german meteorologist, hypothesis (cid:15482) continents used to fit. * evidence for continental drift : - togather as a single supercontinent (cid:15482) pangaea . of fossils (cid:15482) pangaea works . Pangaea (cid:15482) explains the occurrences of fossils : - in. Southern continents , but this heathers these organisms on different contents . couldn"t migrate across ocean . Using sonar : : it allows ship to measure, sonar is based on the sea floor. Bathymetry travel time of sound waves generated by the ship & reflected off the bottom . * sea floor bathymetry : . t : mid ocean ridges & abyssal plains. A map of the volcanic show linear arcs . features . sea floor (cid:15482) mid - ocean ridges . He compiled evidence that the new sea floor subducts back into the mantle . is created by mid - ocean ridges. Mid - ocean ridges (cid:15482) moves away (cid:15482) subducts mantle from ridges.