"Dip, in geology, the name given to the angle of slope of inclined rock strata, as dip in the diagram...The…
The image shows the displacement in the strata of rock that is caused by a geological fault.
"Diagram showing a reverse or overthrust fault (b)." -Lee, 1915
"Diagram showing normal faults (a)." -Lee, 1915
"Diagrammatic structure section of the Wasatch Range in Ogden Canyon." -Lee, 1915