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.
![](https://viva.pressbooks.pub/app/uploads/sites/24/2020/04/Figure-30-1024x534.png)
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.
![](https://viva.pressbooks.pub/app/uploads/sites/24/2020/04/Figure-31-1024x649.png)
3D interactive model of Figure 31: http://app.visiblegeology.com/model.html#ahFzfnZpc2libGUtZ2VvbG9neXIPCxIFTW9kZWwYyZGwoAEM
Questions
![](https://viva.pressbooks.pub/app/uploads/sites/24/2020/04/Figure-32-1024x371.png)
![](https://viva.pressbooks.pub/app/uploads/sites/24/2020/04/Figure-33-1024x375.png)
Question 18. Which map view in Figure 33 has the correct strike and dip symbols for a basin?
- Map A
- Map B
- Map C