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Lecture 3

Lecture 3 - Igneous Rocks

2 Pages

Earth Sciences
Course Code
Earth Sciences 1022A/B
Stephen R Hicock

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Lecture 3 Igneous Rocks y Formation of igneous rock formation discovered by Norman L Bowen o From Kingston ON o Discovered the order that the minerals crystallize y Bowens Reaction Series o The order in which crystals settle in a magma chamber o Earlier dark crystals remove heavy elements leaving the melt with lighter ones Called magmatic differentiation o Discontinuous seriesDifferent structures tetrahedral arrangement o Continuous seriesPlagioclase structure o AssimilationHost rock melts in magmaMagma mixing y Igneous Compositions o Light vs DarkIe Silica vs Fe Mg content o TextureSize shape and arrangement of mineral crystals y Aphanitic fast cooling magma small crystals means not
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