Geodynamics  posted by  duggu   on 1/23/2008 Add To Favorites
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Abstract/Syllabus:

Hager, Bradford, 12.520 Geodynamics, Fall 2006. (Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed 09 Jul, 2010). License: Creative Commons BY-NC-SA

Sources of tectonic stress. (Image by MIT OCW.)

#### Course Highlights

This course features lecture notes and homework assignments.

#### Course Description

This course deals with mechanics of deformation of the crust and mantle, with emphasis on the importance of different rheological descriptions: brittle, elastic, linear and nonlinear fluids, and viscoelastic.

# Syllabus

## Course Description

This course deals with mechanics of deformation of the crust and mantle, with emphasis on the importance of different rheological descriptions: brittle, elastic, linear and nonlinear fluids, and viscoelastic.

## Prerequisites

Applications of Continuum Mechanics to Earth, Atmospheric, and Planetary Sciences (12.005) and either Advanced Calculus for Engineers (18.075) or Mathematical Methods for Engineers I (18.085)

## Text

Turcotte, D. L., and J. Schubert. Geodynamics. 2nd ed. Cambridge, UK: Cambridge University Press, 2002. ISBN: 0521666244.

## Supplementary Texts

Malvern, L. E. Introduction to the Mechanics of a Continuous Medium. Paramus, NJ: Prentice Hall, 1977. ISBN: 0134876032.

Ranalli, G. Rheology of the Earth. 2nd ed. New York, NY: Chapman and Hall, 1995. ISBN: 0412546701.

## Assignments and Exams

Problem sets will be given out approximately weekly. We will also discuss papers from journals. There will be a take-home final exam.

Grades will be based 2/3 on the homework, 1/3 on the final.

## Collaboration

You are encouraged to discuss problem sets to help each other on approaches, etc. But do not copy answers - work them out yourself. Do not discuss the exam.

# Calendar

LEC # TOPICS
1 Course Overview
2 Stress
3 Different Representations of Stress
4 Tectonic Stress
5 Changing Coordinate Systems and Mohr's Circle
6 Stress Variations in the Crust
7 Strain
8 Measuring Strain
9 Mohr's Circle for Strain
10 Finite Strain - Motivation
11 Introduction to Constitutive Equations and Elasticity
12 Elasticity
13 More Special Cases of Elasticity
14 Simple Example: Uniaxial Strain
15 Special Cases
16 Dislocation in Elastic Halfspace Model of the Earthquake Cycle
17 Stress and Strain from a Screw Dislocation
18 Plates
19 Plates (cont.)
20 Plates (cont.)
21 Fluids
22 Fluids (cont.)
23 Navier Stokes Equation
24 The Rayleigh - Taylor Instability
25 The Stream Function and Postglacial Rebound
26 Corner Flow
27 Flow in Porous Media
28 Time Dependent Porous Flow

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