Use the bed-length technique to restore the cross section in Fig. G-45 and evaluate whether or not it balances. That is, draw the stratigraphic template for the restored cross section below the deformed cross section. Then measure the bed lengths of each unit from the pin line, and determine the positions of the ramps and flats of the future fault on the stratigraphic template. Be sure to measure both the top and bottom of each of the three layers; you will have six measurements in all. If the cross section does not balance, state specifically what is wrong with it and key your comments to the deformed-state cross section. Identify every error; it is not sufficient to say ‘‘bed length too long.’’

Fig. G-45

pin line F TR P loose line J TR P