L07_18_Sept_Petrology

Types igneous all rock material starts out as igneous

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Unformatted text preview: (new rock) Melt is separated from residual rock and solidifies. Melt enriched in SiO2, Al2O3, CaO, K2O, Na2O Melt is depleted in MgO Each parAal melAng event only slightly enriches the melt in SiO2, Al2O3, etc. A series of parAal melAng events is necessary to obtain the most evolved and derived igneous rocks. This process takes place over hundreds of millions of years GeneraAon 1 Each parAal melAng event only slightly enriches the melt in SiO2, Al2O3, etc. A series of parAal melAng events is necessary to obtain the most evolved and derived igneous rocks. This process takes place over hundreds of millions of years GeneraAon 1 GeneraAon 2 Each parAal melAng event only slightly enriches the melt in SiO2, Al2O3, etc. A series of parAal melAng events is necessary to obtain the most evolved and derived igneous rocks. This process...
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This document was uploaded on 03/26/2014 for the course GEC AS.270.103 at Johns Hopkins.

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