Seismic stratigraphy, sedimentary architecture and palaeo-glaciology of the Mackenzie Trough: evidence for two Quaternary ice advances and limited fan development on the western Canadian Beaufort Sea margin

► We examine 2-D seismic reflection data from the Mackenzie Trough, Beaufort Sea margin. ► We find evidence for two ice advances through the trough to the shelf break. ► Glacigenic landforms, including a grounding-zone wedge and moraines, are identified. ► The continental slope is incised by canyons and lacks a major trough-mouth fan. ► Mackenzie Trough has a short history of ice advance compared with troughs to the east.