Periglacial and permafrost geology, Clyde River, Baffin Island, Nunavut / [by] I. R. Smith, M. L. Irvine and T. Bell.: M183-1/57-2011E-PDF

"Geological mapping of periglacial landforms and permafrost features was undertaken as part of a community-scale assessment of how different aspects of the physical environment pose risks to existing and future infrastructure development, and how climate change may further alter infrastructure vulnerability. Airphoto and ground surveys were used to identify and map gelifluction lobes (Fig. 1), nivation hollows (Fig. 2), thermokarst depressions (Fig. 3), and ice wedges (Fig. 4). Additional insights were gained by drilling and analyzing 14 permafrost cores (0.19-2.83 m long; Irvine, 2011). Ice-rich, raised marine silty-sand deposits, containing saline permafrost, underlie much of the present town and airport. Surficial sediments in areas where new community developments are taking place, upslope from the coastal terraced regions, appear to potentially be much less affected by ground ice and saline permafrost, but are more subject to surface slope deformation, and the wind drifting and melting of snow in the lee sides of prominent recessional moraines"--Abstract.

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