Costa Rica · Stratovulcano
Vulcano Arenal
Arenal
- Tipo
- Stratovulcano
- Altitudine
- 1670 m
- Ultima eruzione
- 2010
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- Tipo
- Stratovulcano
- Paese
- Costa Rica
- Regione
- America Centrale e Caraibi / Central America Volcanic Arc
- Altitudine
- 1670 m
- Coordinate
- 10.463, -84.703
- Ultima eruzione
- 2010
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Andesite / Andesite basaltica
Sintesi geologica
Conical Volcán Arenal is the youngest stratovolcano in Costa Rica and one of its most active. The 1670-m-high andesitic volcano towers above the eastern shores of Lake Arenal, which has been enlarged by a hydroelectric project. Arenal lies along a volcanic chain that has migrated to the NW from the late-Pleistocene Los Perdidos lava domes through the Pleistocene-to-Holocene Chato volcano, which contains a 500-m-wide, lake-filled summit crater. The earliest known eruptions of Arenal took place about 7000 years ago, and it was active concurrently with Cerro Chato until the activity of Chato ended about 3500 years ago. Growth of Arenal has been characterized by periodic major explosive eruptions at several-hundred-year intervals and periods of lava effusion that armor the cone. An eruptive period that began with a major explosive eruption in 1968 ended in December 2010; continuous explosive activity accompanied by slow lava effusion and the occasional emission of pyroclastic flows characterized the eruption from vents at the summit and on the upper western flank.
Sintesi da Wikipedia
Riassunto in ingleseArenal Volcano is a recently active andesitic stratovolcano in north-western Costa Rica around 90 km (56 mi) northwest of San José, in the province of Alajuela, canton of San Carlos, and district of La Fortuna. The Arenal volcano stands 1,633 metres (5,358 ft) high. It is conically shaped with a crater 140 metres (460 ft) in diameter. Geologically, Arenal is considered a young volcano and it is estimated to be less than 7,500 years old. It is also known as "Pan de Azúcar", "Canaste", "Volcan Costa Rica", "Volcan Río Frío" or "Guatusos Peak".
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Storia delle eruzioni
28 registrateGlossarioCronologia dettagliata
- 1968VEI 3Osservata1968-07-29 – 2010-12-16W flank & summit
- 1922VEI 2Osservata1922-10-05 – 1922-10-23
- 1915VEI 2Metodo non indicato1915-02-05 – fine sconosciuta
- 1750 (±50 anni)VEI 0Stima geologica1750 – fine sconosciutaSummit and NW flank (A2 lava flows)
- 1440VEI 2Stima geologica1440 – fine sconosciuta
- 1400VEI 4Stima geologica1400 – fine sconosciuta
- 1030VEI 4Stima geologica1030 – fine sconosciuta
- 1020VEI 4Stima geologica1020 – fine sconosciuta
- 750 (±50 anni)VEI 4Stima geologica750 – fine sconosciuta
- 700VEI 4Stima geologica700 – fine sconosciuta
- 650 (±100 anni)VEI 4Stima geologica650 – fine sconosciuta
- 550VEI 4Stima geologica550 – fine sconosciuta
- 400VEI 4Stima geologica400 – fine sconosciuta
- 170 a.C. (±200 anni)VEI 4Stima geologica170 a.C. – fine sconosciuta
- 270 a.C.VEI 4Stima geologica270 a.C. – fine sconosciuta
- 380 a.C. (±200 anni)VEI 4Stima geologica380 a.C. – fine sconosciuta
- 830 a.C. (±500 anni)VEI 0Stima geologica830 a.C. – fine sconosciuta
- 1250 a.C. (±200 anni)VEI 4Stima geologica1250 a.C. – fine sconosciuta
- 1450 a.C.VEI 4Stima geologica1450 a.C. – fine sconosciuta
- 1650 a.C.VEI 4Stima geologica1650 a.C. – fine sconosciuta
- 1770 a.C. (±100 anni)VEI ?Stima geologica1770 a.C. – fine sconosciutaCerro Chato
- 2250 a.C.VEI 4Stima geologica2250 a.C. – fine sconosciuta
- 2800 a.C.VEI 4Stima geologica2800 a.C. – fine sconosciuta
- 3190 a.C. (±100 anni)VEI ?Stima geologica3190 a.C. – fine sconosciutaCerro Chato
- 3350 a.C.VEI 4Stima geologica3350 a.C. – fine sconosciuta
- 3900 a.C.VEI 4Stima geologica3900 a.C. – fine sconosciuta
- 4450 a.C.VEI ?Stima geologica4450 a.C. – fine sconosciuta
- 5060 a.C. (±150 anni)VEI 4Stima geologica5060 a.C. – fine sconosciuta
Vulcani nelle vicinanze
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