Please refer to the diagrams of figure 7:2 to answer the following questions. Wh

Question

Please refer to the diagrams of figure 7:2 to answer the following questions.

What is the geologic age of the modern stream valley: Older than 7, younger than 7, or same as 7?          

What is the geologic age of the paleovalley, unconformity?   

What is the geologic age of the faulting?   

What is the geologic age of the anticlinal folding?        

What kind of unconformity is present here?

What is the geologic age of the anticline: Silurian, Devonian, Mississippian, Pennsylvanian, Permian, or younger than Permian?

What is the age of the sills and laccolith: Silurian, Devonian, Mississippian, Pennsylvanian, Permian, or younger than Permian?     

What is the geologic age of the dike? Be specific.        

What is the geologic age of the unconformity? Be specific.

Explanation / Answer

1. The geological age of the modern valley is younger than 7.
2. The geological age of the paleovalley, unconformity is younger than 15 and older than 17.
3. The geological age of the faulting is younger than 6 and older than 8.
4. The geological age of the anticline folding is Mississippian to Pennsylvanian.
5. The unconformity present here is angular unconformity.
6. The geological age of the anticline is Mississippian.
7. The geological age of the sills is Pennsylvanian and that of laccolith is younger than Permian.
8. The geological age of the dike is Palaeocene.
9. The geological age of the unconformity is also Palaeocene but the unconformity is relatively younger than the dike.

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