Details of ES4102 (Autumn 2015)

Level: 4 Type: Theory Credits: 3.0

Course CodeCourse NameInstructor(s)
ES4102 Igneous and Metamorphic Petrology Prasanta Sanyal

Preamble


  • Rationale: This course deals with mineralogical and textural changes that occur in response to elevated temperatures and pressures that rocks experience during deep burial within the earths crust. Additionally, the course makes students understand petrogenesis of igneous rocks (primary rocks) and metamorphic rocks, through interpretation of field relations, mineralogy and textures along with the use of geochemistry and mineral equilibria phase diagrams, from a Plate Tectonics perspective.

Syllabus
  • Composition and Classification of magmatic rocks on mineral composition, chemical composition, using a. the QAPF and the TAS schemes b. Using trace elements c. Using radiogenic and stable isotopes.

  • Introduction to crystal-melt equilibria and phase diagrams to understand origin and evolution of textures of plutonic and volcanic rocks. Introduction to chemical dynamics of melts and crystals. Understanding magma generation: a. Mantle source rocks, generation of magma in mantle peridotite, b. subarc mantle melting c. metasomatically enriched mantle peridotite and d. continental crust.

  • Understanding differentiation of magma: Variation diagrams, closed and open systems, Differentiation in basaltic magmas and the calc-alkaline trend.

  • Plate tectonics and igneous petrogenesis: Oceanic spreading centers and MORB genesis, Mantle plumes and flood basalt plateaus, Arc magmatism (oceanic, ophiolitic, calc-alkaline continental arcs), Continental collision zones, Continental rift zones, Anorogenic magmatism,

  • Metamorphism its definition, types, agents and structures and textures of metamorphic rocks.

  • Understanding metamorphic reactions, their driving forces and reaction rates. Concept of equilibrium in metamorphism and causes of metastable persistence of metamorphic rocks, zonal metamorphism and isograds and metamorphic facies and mineral assemblages of pelitic, quartzofeldspathic, basic, ultrabasic and calcareous bulk composition in response to progressive metamorphism and high-grade metamorphism.

  • Deciphering relation between metamorphism and deformation, metamorphic reactions involving solid solutions and mixed volatiles.

  • Inferring the P-T-deformation-time evolution of metamorphic terrains and its relationship with tectonism and crustal evolution.



    Prerequisite: Mineralogy and Geochemistry (ES3101)


  • References


    1. M. Wilson, Igneous Petrogenesis,

    2. H.R. Rollinson, Using Geochemical Data , Longman (1993).

    3. A.R Philpots and J.J. Ague, Principles of Igneous and Metamorphic Petrology.

    4. J. Winter, Principles of Igneous and Metamorphic Petrology

    5. M.G. Best, Igneous and Metamorphic Petrology

    6. A. Miyashiro, Metamorphic Petrology

    7. F.S. Spear, Metamorphic Phase Equilibria and Pressure-Temperature-Time Paths, Mineralogical Society of America (1993).

    8. K. Bucher and Frey, Petrogenesis of Metamorphic Rocks.

    9. R.H. Vernon and G.L. Clarke Principles of Metamorphic Petrology, Cambridge University Press (2008).


    Course Credit Options

    Sl. No.ProgrammeSemester NoCourse Choice
    1 IP 1 Not Allowed
    2 IP 3 Elective
    3 IP 5 Not Allowed
    4 MR 1 Not Allowed
    5 MR 3 Not Allowed
    6 MS 7 Core
    7 RS 1 Elective
    8 RS 2 Elective