EESA06H3 Lecture 2: Lecture 2.doc

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21 Apr 2012
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Application of plate tectonic theory to the ancient past. Pale environmental reconstruction and pale biology (fossil organism) Hardening of watersheds -> water flows to growth and become contaminated => flood. Water shortage - southern alberta 6l water = 1l oil. Acid mine drainage => waste material from mining. How planet earth works and the plate tectonic revolution Mid-ocean ridges and hot spots (wilson 1965) => paradygm (new idea) Oceanic vs continental plates => crust thin surface. Collisional (obducting and subducting) margins and divergent (rifted) plate margins. Oldest known rock are 4. 6 billion years old (meteorites) Oldest rocks on earth are 4. 03 billion years old and occur in canada found near. Rock cycle => being attacked, broken up and recycled, sucked up by plate, melted, become magma. Igneious rock -born of fire, rock make up of parts of older rocks. Water came from dewatering of mineral deep in earth"s crust. Meteorites: left over, junk from formation of the solar system.

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