01:460:100 Lecture Notes - Lecture 3: Convergent Boundary, Mariana Trench, Seafloor Spreading

• School: Rutgers University
• Department: Geological Sciences
• Course: 01:460:100
• Professor: browning

Document Summary

More evidence- mesoaurus(aquatic reptile) lived near rivers (distribution of fossils) similar major rock structures of the same age that terminate at the edge from sa to africa; Paleoclimate evidence glaciers: as it moves it leaves distinctive piles of sediment and leaves striations (under influence of gravity);, Used to be ice covering southern hemisphere, how did ice move up toward equator and into land. Theory considered nonsense: most geologists i(cid:374) the (cid:374)orther(cid:374) he(cid:373)isphere could(cid:374)"t trust his data, his mechanism proposed continents were drifting around in the ocean. Rocks of continents could not float through ocean floor rocks. Magenetic north poles:1: liquid outer core currents made of iron, as if bar magnet inside earth, magnetic north where magnetically is, spin axis is north pole. Declination diference between north pole and magnetic north: apparent polar wander. Geographic and magnetic north pole were once not together. European and na rock leads to different poles.