31 Domes and Basins

Elizabeth Johnson

Domes

A dome is a circular structure in which the center is uplifted compared to its surroundings.  The oldest layers are exposed in the center of the dome.

Figure 30. A dome showing the oldest layers exposed in the center.

3D interactive model of Figure 30: http://app.visiblegeology.com/model.html#ahFzfnZpc2libGUtZ2VvbG9neXIPCxIFTW9kZWwYubrEmgEM

 

Basins

A basin is a circular structure in which the center is depressed compared to its surroundings.  The youngest layers are exposed in the center of the dome.

Figure 31. A basin showing the youngest layers exposed in the center.

3D interactive model of Figure 31: http://app.visiblegeology.com/model.html#ahFzfnZpc2libGUtZ2VvbG9neXIPCxIFTW9kZWwYyZGwoAEM

 

Questions

Figure 32. Structure for Question 17.

 

Figure 33. Structure for Question 18.

Question 18. Which map view in Figure 33 has the correct strike and dip symbols for a basin?

  • Map A
  • Map B
  • Map C

 

License

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Physical Geology Laboratory by Elizabeth Johnson is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted.

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