Paleo-Hydrothermal Predecessor to Perennial Spring Activity in Thick Permafrost in the Canadian High Arctic, and Its Relation to Deep Salt Structures: Expedition Fiord, Axel Heiberg Island, Nunavut

<div>(a) Aerial view of travertine deposits at Colour Peak perennial springs (CPS), northern shore of Expedition Fiord, that emit brines at 6°C year-round. The 560 m hill is gypsum and anhydrite, but the colourful gossan denotes weathered iron sulfides associated with rafts of igneous mafic rocks. (b) Aerial view of the whitish vein array (WGVA) on the steep flank of White Glacier, also associated with a gossan (photo by Dale Andersen). Note the similar scale of the two phenomena.</div>

Geofluids

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Figure 3: Paleo-Hydrothermal Predecessor to Perennial Spring Activity in Thick Permafrost in the Canadian High Arctic, and Its Relation to Deep Salt Structures: Expedition Fiord, Axel Heiberg Island, Nunavut 

Figure 3 | Paleo-Hydrothermal Predecessor to Perennial Spring Activity in Thick Permafrost in the Canadian High Arctic, and Its Relation to Deep Salt Structures: Expedition Fiord, Axel Heiberg Island, Nunavut 