EPSC 201 Lecture Notes - Lecture 3: Plate Tectonics, Cynognathus, Rock Magnetism
29 Jan 2016
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Document Summary
The way the earth works plate tectonics. Earth"s lithosphere is broken into 20 plates that interact. Each plate is a piece of lithosphere and can have both continent and. 12 major plates, many micro plates ocean environment. Caused by 1) continental drift and 2) sea-floor spreading. Character is different in continent and ocean environment. Oceanic system: thin crust (about 10 km), oceanic lithosphere (about 100 km), and young, thin, less buoyant. Continental system: thick crust (about 35 km), continental lithosphere (about. Plate tectonics can explain why these environments are so different! Theory of continental drift: precursor to the theory of plate tectonics (alfred. Tectonics: the study of large-scale movements and deformation of the earth"s crust. Evidence of theory of plate tectonics: glacial evidence. Evidence of glaciers found on five separated continents from 180 million years ago. These continents must have been together at the poles 180 millions years ago (pangaea reconstruction: paleo-climatic evidence.
