All inlets and fjords on northern Baffin Island record glacial erosion by outlet glaciers (Shepard 1931; Pelletier 1966). However, their positions were probably influenced by prior fluvial erosion (Fortier & Morley 1956; Pelletier 1966; Gilbert 1982) or by graben-style faulting (Andrews & Miller 1979; Gilbert 1982; Dowdeswell & Andrews 1985; England 1987). Navy Board Inlet is a narrow waterway (about 10 km wide) located south of Lancaster Sound between Baffin Island and Bylot Island in Arctic Canada (Fig. 1). Lineations formed by the movement of glacial ice are preserved on the seafloor of this inlet.
Multibeam bathymetry, cross-sections and sub-bottom profiler data over crag-and-tail features in Navy Board Inlet, Nunavut, Canada. (a) Sun-illuminated multibeam-bathymetric data showing crag-and-tail features. Acquisition system Kongsberg EM300. Frequency 30 kHz. Grid-cell size 10 m. (b) Location of study area (red box; map from IBCAO v. 3.0). (c) Detail of crag-and-tail features located on the margin of a bedrock high. Locations of cross-sections indicated by labelled white lines. (d …
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