This command creates a 3D polyline that represents a fault line
which is used by Fence Diagram in the intersection mode, or
in the Make Strata Grid File command. This command is very similar
to Carlson Draw > 3D Polyline command. In addition to elevation
for each vertex of the polyline this command prompts for fault
shift. This shift value is the amount of elevation difference from
left to right across the fault line in the direction of the line is
drawn. Used is also prompted for the dip angle at the beginning,
dip angle is same throughout the length of fault.
The fault line defines a fault surface starting at the
elevations of the fault line and extending up and down by the dip
angle. When a strata surface crosses the fault surface, the strata
will shift by the amount of the shift value of the fault line at
that point.
Enter dip angle (degrees) <0.00>: 90
Reading cell> 89823
[Continue/Extend/Follow/Options/<Pick point or point
numbers>]: pick a
point
Z: 492.29
Enter fault shift <0.00>: 35
[Arc/Distance/Close/Follow/Undo/<Pick point or point
numbers>]: pick a
point
Z: 481.30, Hz dist: 1408.86, Slope dist: 1408.90, Slope: -0.8%
Ratio: -128.2:1
Enter fault shift <35.00>: press Enter
[Arc/Close/Distance/Extend/Follow/Line/Undo/<Pick point or point
numbers>]: pick a
point
Z: 456.90, Hz dist: 1114.75, Slope dist: 1115.02, Slope: -2.2%
Ratio: -45.7:1
Enter fault shift <35.00>: 40
[Arc/Close/Distance/Extend/Follow/Line/Undo/<Pick point or point
numbers>]: pick a
point
Z: 456.02, Hz dist: 750.48, Slope dist: 750.48, Slope: -0.1%
Ratio: -855.4:1
Enter fault shift <40.00>: 45
[Arc/Close/Distance/Extend/Follow/Line/Undo/<Pick point or point
numbers>]: press
Enter
Pulldown Menu Location: StrataCalc
Keyboard Command: fault