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Exercises

The overall goal of this project is to provide students with many examples of, and many opportunities to practice observing, 3D geological structures and their exposure in topography. Several sets of example exercises are provided below in the tables.

For each exercise you have the option of downloading:

    1. just the exercise document,
    2. the exercise document and movies,
    3. the exercise document, the data files and the 3DVisualizer script.

If you’re not sure which one you want, start with option 2.

Short descriptions of each exercise are given below the tables.

Depending on the goal of the exercise, different combinations of structures and topography can be used. For example, one can choose a single surface topography and several different structures, (i.e., how are different structures exposed in the same topography). Alternatively, one could choose one structure and several different topographies (i.e., how is the same structure exposed in different terrain). Or, one can mix and match, moving from simpler structures with smoother terrains to more complex structures with rougher terrain. 

The different versions of each example exercise use different combinations of structures and topographies. This allows you to use one exercise as a lab in class and a different one as a lab quiz, or to assign different versions to sub-groups in the class

  Exercise Documents (.pdf files)
  Level Version
  Structure Volume (SV) 1 1                
  Topography Exposed Structure (TES) 1A 1 2 3            
1B 1 2 3            
1C 1 2 3            
2 1 2 3 4 5 6 7 8 9
  Rule-of-Vs 2 1                

 

  Exercise Documents with Movies (.tgz files)
  Level Version
  Structure Volume (SV) 1 1                
  Topography Exposed Structure (TES) 1A 1 2 3            
1B 1 2 3            
1C 1 2 3            
2 1 2 3 4 5 6 7 8 9
  Rule-of-Vs 2 1 online version

 

 Exercise Documents with Data and Script for using 3DVisualizer Software (.tgz files)
  Level Version
  Structure Volume (SV) 1 1                
  Topography Exposed Structure (TES) 1A 1 2 3            
1B 1 2 3            
1C 1 2 3            
2 1 2 3 4 5 6 7 8 9
  Rule-of-Vs 2 1                

 

Exercise Descriptions

Structure Volumes
In this exercise you will watch six short videos each showing a different structure rendered in 3D. The rock in each layer is represented by originally flat-lying layers of sediment, each with a different color, which have been subsequently deformed to the structure shown. Questions are focused on practicing drawing of visible cross sections and cross sections through the interior of the structure (penetrative understanding).

Topography Exposed Structure Volumes

Rule-of-Vs
In this exercise you will watch two sets of video. The first set uses an idealized sinusoidal topography, while the second set uses real digital topography. In each exercise, the student is  first asked to examine maps showing the exposure of one or multiple dipping layers and determine the dip direction and approximate dip.  The student is then shown the same structures exposed on the same topography in 3D and asked to reassess their determinations and develop an initial description for the “rule-of-Vs”.  Finally, the student is shown videos with the layers rendered with transparent color so their true dip direction and dip can be evaluated. This exercise is design to teach the student through self-discovery of the “rule-of-vs”.