EXERCISE 24 A Section Fault Problems Fault Problems on Block Diagrams 1. In figure 5.28, the...
EXERCISE 24 A Section Fault Problems Fault Problems on Block Diagrams 1. In figure 5.28, the upper group of three block diagrams shows A, an unfaulted segment of the earth's crust with an incipient fault plane (dashed line): B, movement along the fault plane; and C. the appearance of the faulted area after erosion has reduced it to a relatively flat surface. The sequence D, E, F is similar. Complete the outcrop patterns of the inclined formation on block diagrams C and F and label each as the kind of fault it is normal or "reverse"). Indicate by letters: the hanging wall (H), the footwall (F), the upthrown block (U), and the downthrown block (D) on each side of the fault trace in diagrams C and F. (continued) Figure 5.28 Series of block diagrams showing successive stages in the development of faults-(A) and (0) before faulting with incipient fault plane marked by dashed Line: (B) and (E) immediately after faulting: (C) and (f) after erosion of upthrown sides to a level common with the downthrown sides. Structural Geology 233