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Portion of the Bull Creek Quadrangle Geologic Map M.
A portion of a geologic map of Wyoming (called the Bull Creek Quadrangle), which you will use to address the questions following it. You will need to zoom in (maybe even 500%) to see all of the details on this map. Note the symbols to the bottom right indicating different structures. After examining the map, address the questions below:
-According to the legend on the side, and what you know about the Geologic Time Scale, is the Phosphoria Formation older or younger than the Chugwater Formation?
-There are quite a few strike and dip symbols on this map. Find one, draw it in the space below, and describe what that symbol indicates about the rock unit below it.
-Find the anticline with the axis that runs right through the R in FOREST. If the anticline symbol was not there, describe how would you know it was an anticline by using the ages of the rocks in the key, and the geologic time scale?
-Which type of fault is most abundant on this map?
-What does this fault type indicate about the dominant type of stress that this area has experienced (tensional, compressional or shear)?
- Attachment 1
- Attachment 2
