petrology chapter 3
DESCRIPTION
Petrology Chapter 3. Gautam Sen. Stability of Diamond & Graphite. Free energy – composition of Olivine. Al 2 SiO 5 Equilibrium. Silica polymorphs. Mole vs. Wt%. Equilibrium crystallization of Olivine. Fractional Crystallization of Olivine. Plagioclase Zoning. Melt mixing. - PowerPoint PPT PresentationTRANSCRIPT
Petrology Chapter 3Gautam Sen
Stability of Diamond & Graphite
Free energy – composition of Olivine
Al2SiO5 Equilibrium
Silica polymorphs
Mole vs. Wt%
Equilibrium crystallization of Olivine
Fractional Crystallization of Olivine
Plagioclase Zoning
Melt mixing
Diopside-Anorthite “System”
Enthalpy-Composition
Equilibrium crystallization in Di-An
Fractional Melting in Di-An
Nepheline-Silica system
Liquidus – solidus near-convergence of peridotite
Forsterite-Silica System
Crystal%, phases, and cooling
Superheat due to Melt Mixing
Fractional Melting in Fo-SiO2
Albite-Orthoclase system at low pressure (shallow continental crust)
Albite–Orthoclase System at higher pressure (moderate – deep crust)
Fo-H2O
Multisaturation & Isoplethal Diagram
Effect of H2O on Di-An
Pressure effect
Effect of H2O on Fo-Silica System