Geology . Fig. 325. Fig. 326. Fig. 325.—Diagram showing the position of dip faults, oblique faults, etc. Theblack band represents the outcrop of a layer of rock on a plane surface, and there-fore the strike of the rock. AB= the direction of a strike fault, CD the directionof a dip fault, and OH and EF directions of oblique faults. Fig. 326.—Diagrammatic section showing dipping beds. (GH and EF, Fig. 325) would produce still another (see also Vol. I, pp. 521and 525). 1. Suppose a series of sedimentary beds with constant dip to the east to havea single trap sheet,/, interbedded (Fig. 326). Suppo
Geology . Fig. 325. Fig. 326. Fig. 325.—Diagram showing the position of dip faults, oblique faults, etc. Theblack band represents the outcrop of a layer of rock on a plane surface, and there-fore the strike of the rock. AB= the direction of a strike fault, CD the directionof a dip fault, and OH and EF directions of oblique faults. Fig. 326.—Diagrammatic section showing dipping beds. (GH and EF, Fig. 325) would produce still another (see also Vol. I, pp. 521and 525). 1. Suppose a series of sedimentary beds with constant dip to the east to havea single trap sheet,/, interbedded (Fig. 326). Suppose the series to be affectedby a strike fault with upthrow to the east. After erosion has cut down the up-throw side to the level of the other, any layer (say the trap) will outcrop in twoparallel belts (t, Fig. 327). Had the upthrow been to the west (the dip beingeast) a repetition might not have occurred, and the outcrop of a given layer,such as the trap, might have been eliminated. If the faulted su
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