Contour-profile instructions - page 3
Connect the dots on the worksheet as you work your way completely across the fold line on the map. You are making a PRE-event cross-section of the ocean floor depth along the 45° 55.8' latitude line.
illustration of plotting on worksheet Repeat the procedure with the same worksheet, but use the POST-event bathymetric map, also folded along the 45° 55.8' latitude line. Where the depth is the same, do not make a mark, since one is already there. However, when the contour line is at a different location, make a dot with the red pencil on the worksheet.
Connect the red dots with the red pencil and you will see a POST-event cross-section along the same line of latitude.
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