(1) the intersection of three planer geological features (e.g. two beds and the fault surface) or,
(2) by the intersection of a linear geological features and the fault
surface (much less common!).
1) A fault surface (E/30S) interrupts a very thin limestone bed (S30E/40SW)
producing a horizontal slip of 600 m. Calculate graphically the net slip,
dip slip, and strike slip of the displacement vector.
2) (Refer to the following figure)
A fault surface (N50E/60NW) cuts two dykes:
dyke A: (E/40S)
dyke B: (S40E/20NE)
Along a horizontal reference surface the following is known:
bb': 250 m
aa': 460 m
b'a': 450 m
ac: 500 m
A very thin bed (C) (S60E/70SW) crosses the fault at c.
Calculate graphically the net slip and all the components (angles and
distances) of the displacement vector. What type of fault is this?
3) (Refer to the next attached figure)
A limestone bed (CC' and BB') is cut by a major dyke (DD' and EE'). Both the limestone bed and the dyke are cut by a common joint.
Graphically estimate the following:
a) strike and dip of the dyke, the limestone bed and the fault
b) net-slip and all the components of the total displacement vector (distances and angles)
c) What type of fault are we dealing with?
CONGRATULATIONS!!