4) A fault (N90°w/55 N) cuts two structural planes: Plane 1 N45°w/30 NE and Plan

Question

4) A fault (N90°w/55 N) cuts two structural planes: Plane 1 N45°w/30 NE and Plane 2- N50°E/45 NW. The amounts and senses of separation are shown in Figure 1 below. a) What is the amount of strike separation on the fault? b) What is the amount and orientation of the net slip c) What are the dip-slip and strike-slip component magnitudes? d) Classify the fault according to minor-major slip sense of motion. Report the amount and direction of the rake angles used to solve the problem on the stereonet. e) PLANE 1 PLANE 2 45 30 PLANE 1 30 45 PLANE 2

Explanation / Answer

4)

a) the amont of the strike saperation in the fault face is about 15. it is because to the fact that when the fault plane meet the two other planr which are already in an inclined state say 30 and 45 in the upper section then the fault will be 45-30=15.

b) the orientation of the net slip is the fault plane slip in the above case and have the amount of 25 in it.

c) dip slip-these are the incined fracture block which have mostly shifted towads the vericle side. magnitude=10

strike slip- these are the vericle fracture plane blocks which are moved from verticle orientation to shift as horizontal orientation . magnitude =30

d) the classification according to the major slip motions are as follows-

=> verticle

=> left lateral

=> right lateral

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