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Assessment
1. Macrofossils are relatively rare in alluvial fan complexes.
A .True
B .False
2. The geometry of an alluvial fan is best described as:
A .wedge-shaped, concave upwards and lensoid.
B .box-shaped and concave downwards.
C .wedge-shaped and concave downwards.
3. In alluvial fan deposits sedimentary structures are most common in:
A .proximal fan
B .mid-fan
C .distal fan
4. Facies associated with alluvial fan environments can be either alluvial plain, eolian, or playa.
A .True
B .False
5. Alluvial fans have a diagnostic log response in the subsurface.
A .True
B .False
6. Alluvial fan deposits rarely serve as good petroleum reservoirs because the sediments:
A .are poorly sorted.
B .result from debris flow and ephemeral stream runoff.
C .are deposited next to mountain fronts.
D .A, B and C
E .A and C
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