1

1

Deformation &Structural Geology:

Introduction

Brad Hubeny

2

Faults

And Folds

3

Stress vs. Strain

• Stress is a force applied to a given area• Strain is the measurable change in shape or

size of a rock body caused by stress

4

Compressional Stress

5

Tensional Stress

6

Shear Stress

2

7

09_08.jpgBrittle vs. Ductile Deformation

8Marble Cylinders

Brittle vs. Ductile Deformation

9

Brittle vs. Ductile Deformation

10

Deformed Sedimentary Beds

11Figure 10.7

Measuring Orientation: Strike and Dip

12

Strike and Dip and Geologic Maps

3

13