On the above diagrams fill in the six blanks: four main fault types and two main

Question

On the above diagrams fill in the six blanks: four main fault types and two main classes of faults. If the arrow indicating "up" on the cross view sectional diagrams was turned (rotated) 90 degrees clockwise so that it pointed right, would it change the names you put in the blanks below two diagrams? Why or How? If the arrow indicating "north" on the map view diagrams was turned (rotated) 92 degrees anticlockwise, would it change the names you put in the blank below the two diagrams? Why or How? Does the fault drawn in the left diagram of the cross sectional views result in crustal shortening or extension?

Explanation / Answer

10. a) The above both map view faults belongs to Strike slip faults. The above left sided fault is Dextral fault. The above right sided fault is Sinistral ault.

The below both cross sectional faults belongs to Dip slip faults. The below left sided fault is Reverse fault. The below right sided fault is Normal fault.

b) yes. If these both faults has turned 900 clockwise then the left sided fault is turned as normal fault because the foot wall is placed below the hanging wall and the right sided fault is turned as reverse fault because hanging wall is placed above the foot wall.

c) The names of the faults are not changed because dextral fault is a right lateral fault and sinistral fault is a left lateral fault. If the map view faults of the above diagram are turned about 920 anticlock wise the direction of movement of the blocks are changed each other.

d) By crustal shortening process the forces are acted towards each other so the reverse faults are formed by those convergent forces.

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