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Gunung Api Arenal

Arenal

Stratovolkan · Costa Rica · 1670 m

A Strombolian eruption is seen here at Arenal on 15 June 1997. The oldest known Arenal products are about 7,000 years old, and the volcano was active for several thousand years contemporaneously with the older Chato volcano (lower right). A recent eruptive period began with a major explosive event in 1968, and frequent explosive activity and slow lava effusion continued through to 2010.
A Strombolian eruption is seen here at Arenal on 15 June 1997. The oldest known Arenal products are about 7,000 years old, and the volcano was active for several thousand years contemporaneously with the older Chato volcano (lower right). A recent eruptive period began with a major explosive event in 1968, and frequent explosive activity and slow lava effusion continued through to 2010. · Foto: Photo by Olger Aragón, 1997. · Wikimedia Commons
Tipe
Stratovolkan
Negara
Costa Rica
Wilayah
Middle America-Caribbean Volcanic Regions / Central America Volcanic Arc
Ketinggian
1670 m
Koordinat
10.463, -84.703
Letusan terakhir
2010
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

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.

Ringkasan Wikipedia

Gunung Api Arenal adalah sebuah gunung berapi kerucut andesit aktif di Kosta Rika barat laut sekitar 90 km barat laut San José, di provinsi Alajuela, kanton San Carlos, dan distrik La Fortuna. Gunung berapi Arenal memiliki tinggi setidaknya 1.633 meter. Berbentuk kerucut dengan diameter kawah 140 meter. Secara geologis, Arenal dianggap sebagai gunung api muda dan diperkirakan berusia kurang dari 7.500 tahun. Ia juga dikenal sebagai "Pan de Azúcar", "Canaste", "Volcan Costa Rica", "Volcan Río Frío" atau "Puncak Guatusos".

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
5060 BCE~4826 BCE · 1 letusan · VEI maks. 44591 BCE~4357 BCE · 1 letusan · VEI maks. ?4123 BCE~3889 BCE · 1 letusan · VEI maks. 43420 BCE~3186 BCE · 2 letusan · VEI maks. 42952 BCE~2717 BCE · 1 letusan · VEI maks. 42483 BCE~2249 BCE · 1 letusan · VEI maks. 41780 BCE~1546 BCE · 2 letusan · VEI maks. 41546 BCE~1312 BCE · 1 letusan · VEI maks. 41312 BCE~1077 BCE · 1 letusan · VEI maks. 4843 BCE~609 BCE · 1 letusan · VEI maks. 0609 BCE~375 BCE · 1 letusan · VEI maks. 4375 BCE~140 BCE · 2 letusan · VEI maks. 4328~562 · 2 letusan · VEI maks. 4562~797 · 3 letusan · VEI maks. 4797~1031 · 2 letusan · VEI maks. 41265~1499 · 2 letusan · VEI maks. 41734~1968 · 4 letusan · VEI maks. 35060 BCE3420 BCE1546 BCE941734

Garis waktu rinci

  1. 1968VEI 3Teramati
    1968-07-29 – 2010-12-16
    W flank & summit
  2. 1922VEI 2Teramati
    1922-10-05 – 1922-10-23
  3. 1915VEI 2Perkiraan geologi
    1915-02-05 – Berlangsung
  4. 1750 (±50 tahun)VEI 0Perkiraan geologi
    1750 – Berlangsung
    Summit and NW flank (A2 lava flows)
  5. 1440VEI 2Perkiraan geologi
    1440 – Berlangsung
  6. 1400VEI 4Perkiraan geologi
    1400 – Berlangsung
  7. 1030VEI 4Perkiraan geologi
    1030 – Berlangsung
  8. 1020VEI 4Perkiraan geologi
    1020 – Berlangsung
  9. 750 (±50 tahun)VEI 4Perkiraan geologi
    750 – Berlangsung
  10. 700VEI 4Perkiraan geologi
    700 – Berlangsung
  11. 650 (±100 tahun)VEI 4Perkiraan geologi
    650 – Berlangsung
  12. 550VEI 4Perkiraan geologi
    550 – Berlangsung
  13. 400VEI 4Perkiraan geologi
    400 – Berlangsung
  14. 170 SM (±200 tahun)VEI 4Perkiraan geologi
    BCE 170 – Berlangsung
  15. 270 SMVEI 4Perkiraan geologi
    BCE 270 – Berlangsung
  16. 380 SM (±200 tahun)VEI 4Perkiraan geologi
    BCE 380 – Berlangsung
  17. 830 SM (±500 tahun)VEI 0Perkiraan geologi
    BCE 830 – Berlangsung
  18. 1250 SM (±200 tahun)VEI 4Perkiraan geologi
    BCE 1250 – Berlangsung
  19. 1450 SMVEI 4Perkiraan geologi
    BCE 1450 – Berlangsung
  20. 1650 SMVEI 4Perkiraan geologi
    BCE 1650 – Berlangsung
  21. 1770 SM (±100 tahun)VEI ?Perkiraan geologi
    BCE 1770 – Berlangsung
    Cerro Chato
  22. 2250 SMVEI 4Perkiraan geologi
    BCE 2250 – Berlangsung
  23. 2800 SMVEI 4Perkiraan geologi
    BCE 2800 – Berlangsung
  24. 3190 SM (±100 tahun)VEI ?Perkiraan geologi
    BCE 3190 – Berlangsung
    Cerro Chato
  25. 3350 SMVEI 4Perkiraan geologi
    BCE 3350 – Berlangsung
  26. 3900 SMVEI 4Perkiraan geologi
    BCE 3900 – Berlangsung
  27. 4450 SMVEI ?Perkiraan geologi
    BCE 4450 – Berlangsung
  28. 5060 SM (±150 tahun)VEI 4Perkiraan geologi
    BCE 5060 – Berlangsung

Tautan eksternal

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