Smoking Hills Explained
The Smoking Hills are located on the east coast of Cape Bathurst[1] in Canada's Northwest Territories, next to the Arctic Ocean and a small group of lakes. The cliffs were named by explorer John Franklin,[2] who was the first European to see them on his 1826 expeditions. They contain strata of hydrocarbons (oil shales), which have been burning continuously for centuries.
The fires result from autoignition of sulfur-rich lignite deposits. The clouds of smoke have given the region its name. Over time the sulfur dioxide from the smoke has acidified the shallow ponds (< 1ha area and < 1m (03feet) depth) in the tundra dotting the area, down to a pH lower than 2.[3] Elevated concentrations of metals (aluminium, iron, zinc, nickel, manganese and cadmium) occur in these acidic ponds. Soils and sediments have also been chemically altered. The acidic biota in the ponds are characteristic of acidic environments worldwide, in contrast to the typically Arctic biota in adjacent alkaline ponds.[4] Although the soil of the region contains much limestone, the buffer effect has completely disappeared.[5]
Weathering of the coastline of the area leads to the continuous exposure of new mineral deposits from the muds that make up the underlying geology. These are typically colored red when iron-rich.
The nearest community, Paulatuk, which is about 105km (65miles) east, is named in recognition of the coal found in the area, traditionally spelt "Paulatuuq" or "place of coal".[6]
See also
External links and further reading
- Mathews. WH. Bill Mathews. Bustin. RM. Why do the Smoking Hills smoke?. Canadian Journal of Earth Sciences. 21. 7. 737–742. 1984. 10.1139/e84-080.
- Nakatsu. Cindy. Hutchinson. Thomas C. Extreme Metal and Acid Tolerance of Euglena mutabilis and an Associated Yeast from Smoking Hills, Northwest Territories, and Their Apparent Mutualism. Microbial Ecology. 16. 2. September 1988. 213–231. 10.1007/BF02018915.
- LAWEE. Smoking Hills. 2011-02-04.
- Web site: Topographic Map sheet 97C11. Natural Resources Canada. 2010-02-04. . 2011-02-04.
Notes and References
- Freedman. B. Zobens. V. Hutchinson. TC. Gizyn. WI. Intense, Natural Pollution Affects Arctic Tundra Vegetation at the Smoking Hills, Canada. Ecology. 71. 2. April 1990. 492–503. 10.2307/1940303.
- Web site: The Smoking Hills. https://web.archive.org/web/20010209084721/http://library.thinkquest.org/C003603/english/phenomena/smokinghills.shtml. dead. 2001-02-09. 2011-02-04.
- Jernelöv. Arne. Nagell. Björn. Svenson. Anders. Adaptation to an Acid Environment in Chironomus riparius (Diptera, Chironomidae) from Smoking Hills, NWT, Canada. Ecography. 4. 2. April 1981. 116–119. 10.1111/j.1600-0587.1981.tb00987.x.
- Havas. Magda. Hutchinson. Thomas C. The Smoking Hills: natural acidification of an aquatic ecosystem. Nature. 301. 23–27. 1983-01-06. 10.1038/301023a0. 5895.
- Hubert van den Bergh: "Atmosphère et climat", Notes de cours, Ecole Polytechnique Fédérale de Lausanne, Switzerland, 2005.
- Web site: Northwest Territories Official Community Names and Pronunciation Guide . . Education, Culture and Employment, Government of the Northwest Territories . Yellowknife . https://web.archive.org/web/20160113110003/http://www.pwnhc.ca/cultural-places/geographic-names/community-names/ . 2016-01-13 . live . 2016-01-13.