Island Arc Magamatism

John Winter, Department of Geology

This 50 slide PowerPoint presentation introduces the basic structural facets of an island arc system. Magma series (tholeiitic, alkaline, calc-alkaline) and differentiation within magma series are related to the major elements. Other trends in magma series (spatial, temporal, trace element, isotope) are presented. Petrogenesis of magmas is illustrated in terms of mantle flow, rate of subduction and age of the subducting slab and subduction zone. Pressure-temperature-time paths are used as instructive tools. This resource is part of the Teaching Petrology collection.

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.

Cutting Edge

Subject: Geoscience:Geology:Igneous and Metamorphic Petrology:Volcanology, Geoscience:Geology:Geochemistry, Geochemistry:Radioisotopes, Geoscience:Geology:Igneous and Metamorphic Petrology:Geochemistry, Igneous Associations and Tectonic Settings, Geoscience:Geology:Tectonics, Igneous and Metamorphic Petrology:PTt Relationships, Geoscience:Geology:Geochemistry:Elements, Geoscience:Geology:Mineralogy:Phase Equilibria/Thermodynamics
Resource Type: Audio/Visual:Images/Illustrations, Course Information:Course Site:Course Notes, Audio/Visual:Maps
Grade Level: College Upper (15-16), Graduate/Professional, College Lower (13-14)
Classes of Earth Materials: Volcanic Rocks
Course Type: Upper Level:Geochemistry, Mineralogy, Petrology
Geologic Setting: Oceanic Crust, Mantle, Continental Crust
Topics: Solid Earth:Petrology:Geochemistry, Volcanology, Igneous Associations and Tectonic Settings, PTt Relationships, Solid Earth:Geochemistry:Elements, Solid Earth:Geochemistry, Mineralogy:Phase Equilibria/Thermodynamics, Solid Earth:Geochemistry:Radioisotopes, Solid Earth, Chemistry/Physics/Mathematics
Solid Earth Processes: Volcanism
Theme: Teach the Earth:Course Topics:Mineralogy, Teach the Earth:Teaching Topics:Plate Tectonics, Teach the Earth:Course Topics:Petrology, Geochemistry
Tectonic Setting: Continental Arc, Island Arc