This PowerPoint presentation is part of the Whitman College petrology course. The presentation covers the origin of basaltic magmas. Two types of basalt in ocean basins are compared (tholeiitic and alkaline). Composition of mantle-derived magmas and sources of mantle material are listed. Discussion of how the mantle melts, touching on the contribution of volatiles, pressure and composition, is included. The slide show includes figures comparing enriched vs. depleted mantle. This resource is part of the Teaching Petrology collection. http://serc.carleton.edu/NAGTWorkshops/petrology03/index.html
Part of the Cutting Edge collection. The NAGT/DLESE On the Cutting Edge project helps geoscience faculty stay up-to-date with both geoscience research and teaching methods.
Subject: Geoscience:Geology:Geochemistry, Geochemistry:Radioisotopes, Geoscience:Geology:Mineralogy:Phase Equilibria/Thermodynamics, Geoscience:Geology:Igneous and Metamorphic Petrology:Igneous Processes, Geoscience:Geology:Tectonics, Igneous and Metamorphic Petrology, Geochemistry:Elements, Geoscience:Geology:Igneous and Metamorphic Petrology:Igneous Associations and Tectonic Settings Resource Type: Course Information:Course Site:Course Notes, Audio/Visual:Images/Illustrations Grade Level: College Upper (15-16), College Lower (13-14) Course Type: Upper Level:Geochemistry, Petrology Geologic Setting: Mantle Topics: Solid Earth:Petrology:Igneous Processes, Solid Earth:Petrology, Geochemistry:Elements, Solid Earth:Petrology:Igneous Associations and Tectonic Settings, Solid Earth, Mineralogy:Phase Equilibria/Thermodynamics, Chemistry/Physics/Mathematics, Solid Earth:Geochemistry, Geochemistry:Radioisotopes Theme: Teach the Earth:Course Topics:Petrology, Mineralogy, Teach the Earth:Teaching Topics:Plate Tectonics, Teach the Earth:Course Topics:Geochemistry Tectonic Setting: Mid-Ocean Ridge, Oceanic Island
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