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- Negra Muerta is a caldera in Argentina. It is part of the volcanic centres of the Andean Volcanic Belt, which has formed a number of calderas in large ignimbrite producing eruptions. These calderas include Aguas Calientes, Cerro Panizos, Galan, Negra Muerta and La Pacana. Some of these volcanic centres appear to be associated with large fault zones that cross the Puna. Negra Muerta is a caldera with dimensions of 12 by 7 kilometres (7.5 mi × 4.3 mi) that was formed over two volcanic periods, one about 9 million years ago and another over 7 million years ago. Each volcanic period included the formation of ignimbrites, the Acay ignimbrite in the first and the Toba 1 ignimbrite in the second. After the Toba 1 ignimbrite, effusive activity forming lava flows occurred. After the cessation of volcanic activity, glacial and fluvial erosion has exposed subvolcanic structures. (en)
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- Negra Muerta is a caldera in Argentina. It is part of the volcanic centres of the Andean Volcanic Belt, which has formed a number of calderas in large ignimbrite producing eruptions. These calderas include Aguas Calientes, Cerro Panizos, Galan, Negra Muerta and La Pacana. Some of these volcanic centres appear to be associated with large fault zones that cross the Puna. (en)
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- Negra Muerta volcanic complex (en)
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