Sketch the focal-mechanism solutions for earthquakes that would be expected to occur at each of the plate boundaries in Problems 17.1 and 17.2 (Fig. G-57). Be sure to label the fault plane, the auxiliary plane, and the P and T axes.

Problems 17.1

Given the plate tectonic configuration shown in Fig. G-57a (Appendix G), determine the type of plate boundary and the relative rate of motion between plates B and C.

Problems 17.2

Given the plate configuration shown in Fig. G-57b, determine the type of plate boundary and the relative rate of motion between plates B and C.

Fig. G-57b

Transcribed Image Text:

Plate A 6 cm/yr 4.5 cm/yr Plate C Plate B Type of plate boundary between plates B and C: Relative rate of motion between plates B and C: