Geology, Vol. 1 [of 3]

by Thomas C. Chamberlin; Rollin D. Salisbury

Fig. 419.—A fault-scarp; the triangular faces rising abruptly above the plain at the ends of the spurs. (Davis.)

Fig. 420.—Diagrams showing relations of faults and folds.

Fig. 421.

Fig. 422.

Fig. 421.—The fault above grades into a fold below. Thickening and thinning of layers next the fault-plane evident. Based on experimental results of Willis (13th Ann. Rept., U. S. Geol. Surv.)

Fig. 422.—Fault below grading into fold above. Stretching and thinning, and shortening and thickening of beds under pressure is involved. Based on experimental results of Willis.