Seismic reflection profiles from seven cruises to the Laurentian Fan and adjacent continental slope have been interpreted and correlated. Key reflectors have been identified in each survey area and have been tentatively dated by correlation with the Dauntless D-35 well. This sug­gests that the thickness of Quaternary sediments on the Laurentian Fan is about half that previously proposed. The Laurentian Fan consists of a sequence of Quaternary sediments that is similar to that seen elsewhere on the Scotian margin. In the upper Tertiary, channels with low levees crossed the Laurentian Fan north of 43°N and opened onto a broad sandy valley termina­tion zone. Levees in the Pliocene grew higher and spread southward, thus prograding over the older valley-termination zone which must have also shifted southwards. With continued slumping of material off the contin­ental slope down the channels in the Quaternary, the Laurentian Fan con­tinues its migration in a southeast direction, and much of the upper part of the fan was dissected. This Open File report presents a description of the profiles and their correlation, and about 30 examples of seismic reflection profiles with interpreted key reflectors.