Nicaragua · Cono piroclastico
Cerro Negro
Negro, Cerro
- Tipo
- Cono piroclastico
- Altitudine
- 728 m
- Ultima eruzione
- 1999
- Tipo
- Cono piroclastico
- Paese
- Nicaragua
- Regione
- America Centrale e Caraibi / Central America Volcanic Arc
- Altitudine
- 728 m
- Coordinate
- 12.506, -86.702
- Ultima eruzione
- 1999
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Minore
- Roccia principale
- Basalto / Picrobasalto
Sintesi geologica
Nicaragua's youngest volcano, Cerro Negro, was created following an eruption that began in April 1850 about 2 km NW of the summit of Las Pilas volcano. It is the largest, southernmost, and most recent of a group of four youthful cinder cones constructed along a NNW-SSE-trending line in the central Marrabios Range. Strombolian-to-subplinian eruptions at intervals of a few years to several decades have constructed a roughly 250-m-high basaltic cone and an associated lava field constrained by topography to extend primarily NE and SW. Cone and crater morphology have varied significantly during its short eruptive history. Although it lies in a relatively unpopulated area, occasional heavy ashfalls have damaged crops and buildings.
Sintesi da Wikipedia
Riassunto in ingleseCerro Negro is an active volcano in the Cordillera de los Maribios mountain range in Nicaragua, about 10 km (6.2 mi) from the village of Malpaisillo. It is a very new volcano, the youngest in Central America, having first appeared in April 1850. It consists of a gravelly basaltic cinder cone, which contrasts greatly with the surrounding verdant hillsides, and gives rise to its name, which means Black Hill. Cerro Negro has erupted frequently since its first eruption. One unusual aspect of several eruptions has been the emission of ash from the top of the cone, while lava erupts from fractures at the base.
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Storia delle eruzioni
24 registrateGlossarioCronologia dettagliata
- 1999VEI 2Osservata1999-08-05 – 1999-08-07South flank (near Cristo Rey crater)
- 1995VEI 2Osservata1995-05-29 – 1995-12-06
- 1992VEI 3Osservata1992-04-09 – 1992-04-14
- 1971VEI 3Osservata1971-02-03 – 1971-02-14Summit and east flank
- 1969VEI 1Osservata1969-12-19 – 1969-12-29
- 1968VEI 3Osservata1968-10-23 – 1968-12-10Summit and south flank
- 1964VEI 2Metodo non indicato1964-07-02 – fine sconosciuta
- 1963VEI 1Osservata1963-03-16 – fine sconosciuta
- 1962VEI 2Osservata1962-03-21 – 1962-04-16
- 1961VEI 1Osservata1961-10-25 – fine sconosciutaNE-flank fissure
- 1960VEI 3Osservata1960-09-28 – 1960-12-26Summit and south flank
- 1957VEI 2Osservata1957-09-04 – 1957-09-24Summit and east flank
- 1954VEI 2Osservata1954-02-16 – 1954-02-16
- 1950VEI 3Osservata1950-11-21 – 1950-12-17
- 1949VEI 2Osservata1949-06-16 – 1949-06-16
- 1948VEI 2Osservata1948-03-31 – fine sconosciuta
- 1947VEI 3Osservata1947-07-09 – 1947-08-02Summit and NE flank
- 1929VEI 2Osservata1929-02-10 – 1929-03-16
- 1923VEI 3Osservata1923-10-23 – 1923-12-11Summit and upper north flank
- 1919VEI 2Osservata1919-06-20 – 1919-06-30
- 1914VEI 2Osservata1914-10-28 – 1914-11-03
- 1899VEI 2Osservata1899-11-22 – 1899-11-29
- 1867VEI 2Osservata1867-11-14 – 1867-11-30NE-SW-trending fissure
- 1850VEI 2Osservata1850-04-13 – 1850-05-27
Vulcani nelle vicinanze
Link esterni
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