This method provides a way of correcting this distorsion, simply using any spreadsheet. If it is variable, how can we correct it? knowing the apparent dip in that direction. Any direction in between, will be variable. ![]() For example, a 100 m fracture on a plane dipping 80 degrees will look very short if the direction of that fracture is the dip direction of the plane, but it will look as 100 m if the fracture is oriented along the strike. That means, I measure the projection of a line on a horizontal plane. ![]() When I measure fracture lengths on a plane, I cannot really measure their length: What I measure is an " apparent length". Why you would need to use that? Well, for example, I need it sometimes I work interpreting satellite images, focusing on structural geology.
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