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Laguna Verde (Bolivia)

From Wikipedia, the free encyclopedia

Laguna Verde
The green Laguna Verde
Location of Laguna Verde (Bolivia) in Bolivia.
Location of Laguna Verde (Bolivia) in Bolivia.
Laguna Verde (Bolivia)
Location of Laguna Verde (Bolivia) in Bolivia.
Location of Laguna Verde (Bolivia) in Bolivia.
Laguna Verde (Bolivia)
LocationAltiplano, Sur Lípez Province, Potosí Department
Coordinates22°47′38″S 67°48′44″W / 22.79389°S 67.81222°W / -22.79389; -67.81222
Typesalt lake
Basin countriesBolivia
Surface elevation4,300 m (14,100 ft)
Map

Laguna Verde (Spanish for "green lake")[1] is a salt lake in an endorheic basin, in the southwestern Altiplano in Bolivia. It is located in the Sur Lípez Province of the Potosí Department. It is close to the Chilean border, at the foot of the volcano Licancabur.

Laguna Verde seen from Licancabur
View from the shore

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Transcription

Geography

The Laguna Verde is a lake at 4,310 metres (14,140 ft) elevation.[2] It covers an area of 7.5 square kilometres (2.9 sq mi) and has a depth of 5.4 metres (18 ft),[3] and a narrow causeway divides it into two parts. It is at the southwestern extremity of the Eduardo Avaroa Andean Fauna National Reserve and Bolivia itself. It has mineral suspensions of arsenic and other minerals which renders colour to the lake waters. Its color varies from turquoise to dark emerald depending on the disturbance caused to sediments in the lake by winds.

In the backdrop of the lake there is the inactive volcano Licancabur of 5,868 metres (19,252 ft) in elevation, which is a nearly perfect cone.[4] The shorelines west and east of the lake have different characteristics, with the western and southern shores eroded into volcanoes.[5] Geothermal heat warms waters that then emerge into Laguna Blanca through springs,[6] the lakes are otherwise fed by snowfall.[5] The catchment of the lake has an area of about 776 square kilometres (300 sq mi).[2]

In the past, the lake was at least 45 metres (148 ft) higher[5] and larger than today, during the last glacial maximum it merged with neighbouring Laguna Blanca. Former highstands have left 30 major and 12 minor shorelines.[6] The lake extended far east of its present-day shore.[5] A maximum water level was reached 13,240 years before present. The two lakes today are only connected by a single channel and their properties are quite different.[3] The lake is seldom ice-covered, water temperatures range between 13–20 °C (55–68 °F). Air temperatures range between 10 – −30 °C (50 – −22 °F), and UV radiation is 40% higher than at sea level.[3] Environmental conditions have been compared to those on the planet Mars, and Laguna Verde has been cited as an example of how a lake on Mars would have evolved.[5]

The lake is one of Bolivia's most important tourism targets.[7] Stromatolites of various shapes and sizes occur at Laguna Verde, they cover an area of over 100 square kilometres (39 sq mi) but are inactive today. Presumably, they grew around 20,000-10,000 years ago.[6] Presently, smaller structures and microbial mats formed by cyanobacteria still occur at Laguna Verde.[5] Mining tailings are found at its shores.[3] The bacterial species Chromohalobacter sarecensis was discovered at Laguna Verde.[8] Despite their connection, Laguna Verde and Laguna Blanca have distinctly different biological and chemical traits.[5]

See also

References

  1. ^ Mandy Lineback; Jason Gritzner (1 January 2009). Bolivia. Infobase Publishing. pp. 21–. ISBN 978-1-4381-0488-1.
  2. ^ a b Risacher, François; Fritz, Bertrand (1 March 1991). "Geochemistry of Bolivian salars, Lipez, southern Altiplano: Origin of solutes and brine evolution". Geochimica et Cosmochimica Acta. 55 (3): 687–705. Bibcode:1991GeCoA..55..687R. doi:10.1016/0016-7037(91)90334-2. ISSN 0016-7037.
  3. ^ a b c d Cabrol, Nathalie A.; Grin, Edmond A.; Chong, Guillermo; Minkley, Edwin; Hock, Andrew N.; Yu, Youngseob; Bebout, Leslie; Fleming, Erich; Häder, Donat P.; Demergasso, Cecilia; Gibson, John; Escudero, Lorena; Dorador, Cristina; Lim, Darlene; Woosley, Clayton; Morris, Robert L.; Tambley, Cristian; Gaete, Victor; Galvez, Matthieu E.; Smith, Eric; Uskin‐Peate, Ingrid; Salazar, Carlos; Dawidowicz, G.; Majerowicz, J. (2009). "The High-Lakes Project". Journal of Geophysical Research: Biogeosciences. 114 (G2): n/a. Bibcode:2009JGRG..114.0D06C. doi:10.1029/2008JG000818. (Erratum: doi:10.1029/2010JG001290)
  4. ^ "Bolivia (Uyuni - Laguna Verde)". Journeylatinamerica. Archived from the original on 22 February 2014. Retrieved 30 July 2013.
  5. ^ a b c d e f g Cabrol, Nathalie A.; Grin, Edmond A.; Zippi, Pierre; Noffke, Nora; Winter, Diane (2018-01-01), Cabrol, Nathalie A.; Grin, Edmond A. (eds.), "Chapter 6 - Evolution of Altiplanic Lakes at the Pleistocene/Holocene Transition: A Window Into Early Mars Declining Habitability, Changing Habitats, and Biosignatures", From Habitability to Life on Mars, Elsevier, pp. 153–177, Bibcode:2018fhlm.book..153C, ISBN 978-0-12-809935-3, retrieved 2020-10-25
  6. ^ a b c Cabrol, N. A.; Grin, E. A.; McKay, C. P.; Friedmann, I.; Diaz, G. Chong; Demergasso, C.; Kisse, K.; Grigorszky, I.; Ocampo Friedmann, R.; Murbach, M. S.; Hock, A. (2003-03-01). "First Results of the Expedition to the Highest Lake on Earth: Studying a Martian Paleolake in Bolivia and the Survival Strategies Developed by Living Organisms". 34th Annual Lunar and Planetary Science Conference. Vol. 34. League City, Texas. p. 1140. Bibcode:2003LPI....34.1140C.{{cite book}}: CS1 maint: location missing publisher (link)
  7. ^ Perreault, Thomas (1 February 2005). "State Restructuring and the Scale Politics of Rural Water Governance in Bolivia". Environment and Planning A: Economy and Space. 37 (2): 263–284. doi:10.1068/a36188. S2CID 143994432.
  8. ^ Quillaguamán, Jorge; Delgado, Osvaldo; Mattiasson, Bo; Hatti-Kaul, Rajni (2004). "Chromohalobacter sarecensis sp. nov., a psychrotolerant moderate halophile isolated from the saline Andean region of Bolivia". International Journal of Systematic and Evolutionary Microbiology. 54 (6): 1921–1926. doi:10.1099/ijs.0.63153-0. hdl:11336/42031. PMID 15545411.

External links


This page was last edited on 4 January 2024, at 18:35
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