GSC 101 Lecture Notes - Lecture 5: Aluminium Silicate, Igneous Rock, Mafic
23 Feb 2018
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Make sure you are familiar with the rocks and minerals i"ve emphasized so far= granite (light coarse), basalt (dark fine grained), quartz (pure silicate), Feldspar (aluminum silicates), calcium carbonate (limestone), iron oxides (rust). Three main rocks of the rock cycle= igneous, metamorphic, sedementary. Igneous rock= formed by the cooling of magma. Why rocks melt= heating by rising magma, decompression melting, Intrusive rocks= magma cools slowly in earth"s crust making coarse rocks. Extrusive rocks= magma cools quickly at the earth"s surface making fine grained rocks. Three compositions of igneous rocks= felsic (lighter), intermediate, mafic (darker) Fractionation= when you set mixtures into two separate piles. Be able to read the chart on slide 35 (you will have a copy of this chart on the exam) Discontinuous reaction series: fractionation of silicates and metals, and. Linking up of silicates= silicate melts quicker than metal so you get a silicate liquid.
