EPSC 181 Lecture Notes - Lecture 2: San Andreas Fault, Chemical Formula, Subduction
16 Mar 2019
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10:02 pm: accretion of solar system, dust and gas is raw materials for new solar systems, craters, all elements except h, he were synthesized and then returned to space. Earth"s atmosphere: mantle: rocky, intermediate density, crust: rocky, low density oceanic and continental surface rocks are half made of oxygen, followed by si and al, not actually a lot of surface water on the earth. Metamorphic rocks: metamorphic rock: rocks that have been heated and squeezed by pressure in earth, eg) coal (from swamp), garnet schist. Minerals: biotite mica, apatite (calcium phosphate): make up teeth (hydroxyapatite crystals); can be used as fertilizers, pyrite (iron sulfide): "fool"s gold"; occurs with coal, when burned: releases hydrogen sulfate (sulfuric acid); results in smog and acid rain. Archimedean buoyancy floating solids displace water equal to heir mass iceberg "sinks" until mass of water that is displaced is equal to total mass of iceberg for plates: continental plates float higher, oceanic plates float lower.
