| 释义 |
- References
{{Location map|Canada Nunavut|lat_dir=N|lat_deg=81|lat_min=00|lon_dir=W|lon_deg=81|lon_min=40|width=300|caption=Location within Canada|label=Borup Fiord Pass}}Borup Fiord Pass is a glacier-carved valley on Ellesmere Island in Nunavut, Canada. The valley contains a natural spring which carries fluids from the subsurface to the surface, sometimes passing through the glacial ice in the process. The spring is the only known place where sulfur from a natural spring is deposited over ice.[1] At the Borup Fiord Pass spring, hydrogen sulphide gas in the water is converted to stable deposits of either elemental sulfur, the most common material in the deposit, or gypsum.[1] The process by which hydrogen sulfide becomes sulfur is complex, and most often occurs when microbes, like bacteria, are present.[1]References1. ^1 2 {{cite web |title=Signs of Life: Sulfur Deposits at Borup Fiord Pass, Canadian Arctic |publisher=NASA |url=http://earthobservatory.nasa.gov/IOTD/view.php?id=43833}}
{{coord|81|00|N|081|40|W|type:mountain_region:CA-NU|display=title|name=Borup Fiord Pass}}{{QikiqtaalukNU-geo-stub}} 2 : Ellesmere Island|Valleys of Canada |