Laguna Negra, Catamarca
Lake in Catamarca Province, Argentina / From Wikipedia, the free encyclopedia
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Laguna Negra is a lake in the Catamarca Province of Argentina. It lies on the Puna high plateau next to two other lakes and salt flats. The lake is less than 2 metres (6 ft 7 in) deep and forms a rough rectangle with a surface of 8.6 square kilometres (3.3 sq mi). Laguna Negra loses its water through evaporation, and is replenished through surface runoff and groundwater which ultimately originate to a large part from snowmelt. The waters of the lake are salty.
Laguna Negra | |
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Location | Argentina |
Coordinates | 27°38′49″S 68°32′43″W[1] |
On the southeastern shore of the lake, microbialites grow in the shallow water. These are structures formed by carbonate and microorganisms including diatoms and various bacteria. These structures have a layered internal structure and colours ranging from green to orange-pink to black. They have been compared to Precambrian stromatoliths, which were among the oldest forms of life on Earth.