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Indian Institute of Science Education and Research Bhopal

EES 408: Geodynamics Laboratory (1)

Prerequisites (Desirable): Credited or registered in EES 402

Learning Objectives:

The course aims to understand the basic theory and applications of geodynamics using numerical models and computational techniques. The theoretical knowledge will be utilized to model the key dynamic processes such as subduction, lithospheric extension, collision, slab break-off, intrusion emplacement, mantle convection and planetary core formation through a set of appropriately designed exercises.

Course Contents:

Continuity Equations:
Continuum, continuity equation, Eulerian and Lagrangian points – what is the difference? Derivation of the Eulerian continuity equation, derivation of the Lagrangian continuity equation, comparing Eulerian and Lagrangian continuity equations.

Stress and Strain:
Equations related to stress conditions and associated strain in lithospheric plates, Mohr’s Circle constructions.

The Heat Conservation Equations:
Heat generation and consumption, Fourier law of heat conduction, simplified temperature equations, heat diffusion time scales.

Gravity:
Density and gravity of rocks and minerals, equations of state, gravitational potential, geoid.

Flow Laws Related to Rock Elasticity and Melting:
Diffusion creep, dislocation creep, viscous fluid, effective viscosity, mantle rheology and channel flow.

Design of 2D Numerical Geodynamical Models:
Elasto-plastic slab bending, lithospheric extension, continental collision, slab breakoff, intrusion emplacement into the crust.

Suggested Readings :

1. Fowler, C. M. R., 2005, The Solid Earth: An Introduction to Global Geophysics (2^nd Edition), Cambridge University Press.
2. Garya, T. V., 2009, Introduction to Numerical Geodynamic Modeling, Cambridge.

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