It is located between the towns of Lillooet and Cache Creek (29.44 kilometres WNW, as the crow flies, from Cache Creek) and lies along BC Highway 99, 8.85 highway kilometres (northeast then southeast) from Pavilion, British Columbia. There is a small community of lakeshore residences, some recreational and seasonal only, located on the lake's eastern shore adjacent to the highway. The lake is overlooked by the cliffs of Marble Canyon, which is the southern buttress of the Marble Range, and the forests of the northernmost Clear Range. Also overlooking the lake is Chimney Rock (K'lpalekw in Secwepemc'tsn, "Coyote's Penis"), which like the lake and the canyon have spiritual significance to the adjoining native communities, the Tskwaylaxw people of Pavilion and the Bonaparte band of Secwepemc at Upper Hat Creek. One of the rancheries and a rodeo and pow-wow ground of the Pavilion Band is located at Marble Canyon's south entrance. The lake area and its foreshore were added to Marble Canyon Provincial Park in order to protect its special scientific and heritage values.
CharacteristicsEdit
The lake demonstrates karst hydrology, with underground inflows from Marble Canyon creeks.[1] The lake has generally low biological productivity, and is classified as ultraoligotrophic. It also features a high degree of water clarity.[1] The lake gets covered with ice annually, and is dimictic, going through two thermal overturns per year.[1] The lake reaches a maximum depth of 65 meters below the surface.[2] It is also a hard water lake, due to its high mineral content.[1]
Microbialites and Scientific ResearchEdit
Part of a karst formation, the lake is most notable for being home to colonies of microbialites,[1] a type of stromatolite. Colonies of microbialites grow from depths of 5 to 55 meters. Low sedimentation rates may allow for continued development of these colonies.[1] One estimate puts microbialite growth at 0.05 mm per year within the last 1,000 years.[3] Research at Pavilion Lake has suggested that most biological activity in microbialite structures occurs near the surface of these structures.[3] The lake's harsh geochemical environment prevents the development of metazoan grazers, also allowing for microbialite development.[1]
^ abcdefgLim, Darlene (2009). "Limnology of Pavilion Lake, B. C., Canada Characterization of a microbialite forming environment". Fundamental and Applied Limnology. 173 (4): 329–351. doi:10.1127/1863-9135/2009/0173-0329. ISSN 1863-9135.
^Andersen, Dale (2011), "A historical overview of the Pavilion Lake Research Project—Analog science and exploration in an underwater environment", Analogs for Planetary Exploration, Geological Society of America, doi:10.1130/2011.2483(07), ISBN978-0-8137-2483-6
^ abSchulze-Makuch, Dirk (March 2013). "Pavilion Lake Microbialites: Morphological, Molecular and Biochemical Evidence for a Cold-Water Transition to Colonial Aggregates". Life. 3 (1): 21–37. doi:10.3390/life3010021. PMC4187197. PMID 25371330.
pavilion, lake, freshwater, lake, located, marble, canyon, british, columbia, canada, home, colonies, freshwater, microbialites, contents, location, local, communities, characteristics, microbialites, scientific, research, also, references, external, linksloca. Pavilion Lake is a freshwater lake located in Marble Canyon British Columbia Canada home to colonies of freshwater microbialites Contents 1 Location and Local Communities 2 Characteristics 3 Microbialites and Scientific Research 4 See also 5 References 6 External linksLocation and Local Communities EditIt is located between the towns of Lillooet and Cache Creek 29 44 kilometres WNW as the crow flies from Cache Creek and lies along BC Highway 99 8 85 highway kilometres northeast then southeast from Pavilion British Columbia There is a small community of lakeshore residences some recreational and seasonal only located on the lake s eastern shore adjacent to the highway The lake is overlooked by the cliffs of Marble Canyon which is the southern buttress of the Marble Range and the forests of the northernmost Clear Range Also overlooking the lake is Chimney Rock K lpalekw in Secwepemc tsn Coyote s Penis which like the lake and the canyon have spiritual significance to the adjoining native communities the Tskwaylaxw people of Pavilion and the Bonaparte band of Secwepemc at Upper Hat Creek One of the rancheries and a rodeo and pow wow ground of the Pavilion Band is located at Marble Canyon s south entrance The lake area and its foreshore were added to Marble Canyon Provincial Park in order to protect its special scientific and heritage values Characteristics EditThe lake demonstrates karst hydrology with underground inflows from Marble Canyon creeks 1 The lake has generally low biological productivity and is classified as ultraoligotrophic It also features a high degree of water clarity 1 The lake gets covered with ice annually and is dimictic going through two thermal overturns per year 1 The lake reaches a maximum depth of 65 meters below the surface 2 It is also a hard water lake due to its high mineral content 1 Microbialites and Scientific Research EditPart of a karst formation the lake is most notable for being home to colonies of microbialites 1 a type of stromatolite Colonies of microbialites grow from depths of 5 to 55 meters Low sedimentation rates may allow for continued development of these colonies 1 One estimate puts microbialite growth at 0 05 mm per year within the last 1 000 years 3 Research at Pavilion Lake has suggested that most biological activity in microbialite structures occurs near the surface of these structures 3 The lake s harsh geochemical environment prevents the development of metazoan grazers also allowing for microbialite development 1 The lake has been the subject of astrobiology research by NASA the Canadian Space Agency and research institutions from around the world The research falls under the umbrella of the Pavilion Lake Research Project The Pavilion Lake Research Project has used the site to help train Canadian Space Agency astronauts Pavilion Lake nbsp nbsp Pavilion LakeLocationBritish ColumbiaCoordinates50 52 00 N 121 44 31 W 50 86677 N 121 74191 W 50 86677 121 74191Primary outflowsPavilion CreekBasin countriesCanadaMax length5 8 kilometers 3 6 mi Max width0 8 kilometers 0 50 mi Max depth65 meters 213 ft Surface elevation820 meters 2 690 ft nbsp Microbialite towers with NASA diver 50 60 feet deep in Pavilion Lake nbsp A surface view of Pavilion LakeSee also EditFraser Canyon Fountain British Columbia Marble Canyon Pavilion Indian Band Tskwalaxw First Nation References Edit a b c d e f g Lim Darlene 2009 Limnology of Pavilion Lake B C Canada Characterization of a microbialite forming environment Fundamental and Applied Limnology 173 4 329 351 doi 10 1127 1863 9135 2009 0173 0329 ISSN 1863 9135 Andersen Dale 2011 A historical overview of the Pavilion Lake Research Project Analog science and exploration in an underwater environment Analogs for Planetary Exploration Geological Society of America doi 10 1130 2011 2483 07 ISBN 978 0 8137 2483 6 a b Schulze Makuch Dirk March 2013 Pavilion Lake Microbialites Morphological Molecular and Biochemical Evidence for a Cold Water Transition to Colonial Aggregates Life 3 1 21 37 doi 10 3390 life3010021 PMC 4187197 PMID 25371330 External links EditPavilion Lake Research Project website Map and pictures from SFU site description of site from SFU website Location map and images from Nature magazine Article in Astrobiology Magazine Retrieved from https en wikipedia org w index php title Pavilion Lake amp oldid 1174700032, wikipedia, wiki, book, books, library,
