Laguna Negra
Laguna Negra is the Spanish translation for "black lagoon". It may refer to: * Laguna Negra, a lake in Catamarca Province, Argentina * Laguna Negra, a lagoon in Rocha Department, Uruguay {{disambiguation ...
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Laguna Negra, Catamarca
Laguna Negra is a lake in the Catamarca Province of Argentina. It lies on the Altiplano, Puna high plateau next to two other lakes and Salt pan (geology), salt flats. The lake is less than deep and forms a rough rectangle with a surface of . 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. 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. Regional and local Laguna Negra lies at an elevation of in the Tinogasta Department, Catamarca Province of Argentina, and near the San Francisco Pass ...
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