PPT-Petrology Chapter 4

Gautam Sen Ternary Diagram Equilibrium Crystallization Equilibrium Melting Fractional Crystallization Fractional Melting DiAn Fo System DiAn Ab at 1 atm DiAn Ab Equilibrium Crystallization. EENS 2120 Petrology Prof. Stephen A. Nelson Tulane University Magmatic Differentiation related to the same magmatic event. Evidence fo ess that causes magma magmatic differentiation. 1.Distinct melti LIN SUTHERLAND Mineralogy and Petrology Section, Australian Museum, 6 College Street, Sydney, N.S.W. 2000, Australia ROBERT R. COENRAADS Association of Australia (N.S.W. Division), 24 Wentworth Avenue Gautam Sen. Plates & Mid-oceanic Ridges. Types of Spreading Center. Ridge offset by a. Transform fault. Overlapping . Spreading Center. Continuous Ridge. Axis with a small. bend. Relief map of EPR. Gautam Sen. Formation of Solar System. Earth’s Internal Layering. Origin of Earth’s Layers. Origin of Layering. Origin of Layering. Plates. Types of Plate Boundaries. Types of Plate Boundaries. Pangaea. 209 INTRODUCTION Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 117975 RussiaReceived December 20, 1995 PETROLOGYVol. 4 MELT INCLUS Gautam Sen. Flood Basalts & Hot Spot Tracks. “Plume Heads & Tail” Model. Central Atlantic Magmatic Province (CAMP). Flood Basalts & Mass Extinctions. Columbia River Basalt. FeO* & TiO. Theda. . Strickler. , . with faculty sponsor Dr. . Chris A. . Barker, Department of Geology. ABSTRACT. STUDY AREA. Analysis of thin sections from the Wind Mountain quadrangle, Burro Mountains, NM, near the Tyrone copper mine, reveals a complex geologic history. Rock samples collected in the study area were cut using a rock saw and thin sections were prepared and analyzed to determine mineral content and fabric patterns. The oldest rocks in the study area are strongly metamorphosed and locally . Oceanic Intraplate Volcanism. GLY 4310 - Spring, 2017. 2. Hot Spots, Trails, and . Aseismic Ridges. Figure 14.1. . Map of relatively well-established hotspots and selected hotspot trails (island chains or aseismic ridges). Hotspots and trails from Crough (1983) with selected more recent hotspots from Anderson and Schramm (2005). Also shown are the geoid anomaly contours of Crough and Jurdy (1980, in meters). Note the preponderance of hotspots in the two major geoid highs (superswells).. granitoids. of the northern part of Adamawa Massif, N.E Nigeria. I.V. . . Haruna. Department of Geology. Modibbo. . Adama. University of Technology, . Yola. - Nigeria. ORDER OF PRESENTATION. Introduction. Mid-Ocean Ridge Volcanism. GLY 4310 - Spring, 2017. 2. MOR System. 3. MOR Spreading Rates. 4. Oceanic Crust Cross-Section. Figure 13-5 . Modified after Brown and . Mussett. (1993) . The Inaccessible Earth: An Integrated View of Its Structure and Composition. Chapman & Hall. London.. Introduction to Metamorphism. GLY 4310 - Spring, 2017. 2. Metamorphism Definition. “The mineralogical, chemical, and structural adjustment of solid rocks to physical and chemical conditions which differ from the conditions under which the rocks in question originated” (from the Glossary of geology, 2nd edition) . Igneous Structures and . Field Relationships. GLY 4310 - Spring, 2017. 2. Viscosity and Temperature. Anhydrous rhyolitic magma . 1400. °. C - 10. 5. poise. 1000. °. C - 10. 8. poise. 3. Viscosity and Composition. Igneous Rock Textures. GLY 4310 - Spring, 2017. 2. Primary. Form during solidification. They result from interactions between mineral crystals and melt. 3. Secondary. Develop by alteration of the rock after crystallization. . 7: . Continental Flood . Basalts, . Island Arc . Magmatism and . Continental Arc Magmatism. Tamer Abu-Alam. University . of . Tromsø. – The Arctic University of . Norway. Tamer.abu-alam@uit.no.