Structure

Menu:

Three Dimensions

Strike and Dip

Dipping Layers

Folds and Faults

Prelab 10: Structural Geology

Structural Geology is the study of the deformation of rock units. Rocks, through their history may undergo severe stress (much like humans) and through time, the rock units may yield to the stresses (much like humans) by bending or even breaking. A structural geologist studies how rock units deform and, through careful description of the resultant geologic "structures," will infer the processes that deformed the rocks.

In lecture you will learn about the mechanisms and processes of deformation. In lab this week, you will learn about the resultant geologic structures, such as folds and faults. This prelab assignment will give you some background information to assist you in identifying folds and faults. You will use this information again in the next two labs, so this background is important to understand for the next three lab periods.

It would be a good idea to review this material close to the lab final, because a good percentage of the lab final will be related in some way to structural geology.

Assignment:

Read through the information by following the links above. The main concepts you should know for a possible lab quiz (and the lab assignment) are:

  • Definition of strike and dip
  • The three components to describing the strike and dip
  • Using dip direction to determine the relative age of a rock sequence
  • Components of a fold
  • Definition of the footwall and hangingwall of a fault