Review

Geotime Part 1 Maps and Compasses Strike and Dip Right-hand Rule Stratigraphic Facing

Descriptive Structure

Introduction: Stress & Strain Fractures & Joints Faults: General considerations Oblique-slip faults Fault zone rocks Andersonian principles Strike-slip faults: Part 1 Strike-slip faults: Part 2 Thrust faults Normal faults Ductile shear zones Putting together a workable stereonet Stereonet-plotting planes & lines Stereonet-understanding apparent dip Folds Stereonet-Fold geometry Folds-map representation Geologic x-sections: I Geologic x-sections: II Three-point problem: I Three-point problem: II Foliations Lineations

Stress

Stress: normal & shear Mohr circle Triaxial stress tests Mohr-Coulomb criteria Griffith cracks Amonton's 2nd law

Strain

Strain measurements Simple shear Pure shear Volumetric strain Stress-strain graphs

Crystal plasticity

General considerations Edge dislocations Screw dislocations Microscopic effects