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Grímsnes

Grimsnes

Medan gunung api · Iceland · 200 m

A small pond about 60 x 100 m fills the bottom of the Kerid crater at the northern end of the Tjarnarhólar crater row in the Grímsnes volcanic system. The crater is elliptical in shape, 180 x 280 m. The Seyðishólar and Kerhóll cinder cones, visible in the background to the north, were active about 9,500 and 7,050 years ago respectively. Seyðishólar is the only Holocene eruption recognized to have had tephra dispersal outside of the volcanic field.
A small pond about 60 x 100 m fills the bottom of the Kerid crater at the northern end of the Tjarnarhólar crater row in the Grímsnes volcanic system. The crater is elliptical in shape, 180 x 280 m. The Seyðishólar and Kerhóll cinder cones, visible in the background to the north, were active about 9,500 and 7,050 years ago respectively. Seyðishólar is the only Holocene eruption recognized to have had tephra dispersal outside of the volcanic field. · Foto: Photo by Lee Siebert, 2008 (Smithsonian Institution). · Wikimedia Commons
Tipe
Medan gunung api
Negara
Iceland
Wilayah
Atlantic Ocean Volcanic Regions / Iceland Neovolcanic Rift Volcanic Province
Ketinggian
200 m
Koordinat
64.050, -20.883
Letusan terakhir
-3500
Kondisi tektonik
Rift zone / Oceanic crust (< 15 km)
Bentuk lahan
Cluster
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

Grímsnes is a relatively small volcanic system located SE of Thingvallavatn lake. It is displaced about 15-20 km to the east of the other en-echelon group of volcanic fields of the Western Volcanic Zone extending across the Reykjanes Peninsula. Its lava flows cover 54 km2 and were erupted from a group of 11 fissures that produced a series of NE-SW-trending crater rows. The eruptions of its basaltic lavas were considered to have been restricted to a relatively short interval between about 6,500 and 5,500 years ago, but radiocarbon dating showed that some of the lava flows were emplaced between about 7,400 and 8,900 years ago.

Ringkasan Wikipedia

Ringkasan Inggris

Grímsnes is a relatively small fissure or crater row volcanic system located in South Iceland, located south–east of Lake Thingvallavatn and east of the en echelon group of volcanic systems extending across the Reykjanes Peninsula, that erupted last in the Holocene.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
7750 BCE~7557 BCE · 1 letusan · VEI maks. 36398 BCE~6205 BCE · 1 letusan · VEI maks. ?4659 BCE~4466 BCE · 1 letusan · VEI maks. 04466 BCE~4273 BCE · 1 letusan · VEI maks. 24273 BCE~4080 BCE · 1 letusan · VEI maks. 34080 BCE~3886 BCE · 3 letusan · VEI maks. 23886 BCE~3693 BCE · 1 letusan · VEI maks. 03693 BCE~3500 BCE · 2 letusan · VEI maks. 27750 BCE6784 BCE5625 BCE4659 BCE3693 BCE

Garis waktu rinci

  1. 3500 SMVEI 2Perkiraan geologi
    BCE 3500 – Berlangsung
    Kalfsholar
  2. 3650 SMVEI 0Perkiraan geologi
    BCE 3650 – Berlangsung
    Borgarholar
  3. 3750 SMVEI 0Perkiraan geologi
    BCE 3750 – Berlangsung
    Raudholar
  4. 3900 SMVEI 0Perkiraan geologi
    BCE 3900 – Berlangsung
    Kolgrafarholl
  5. 4000 SMVEI 2Perkiraan geologi
    BCE 4000 – Berlangsung
    Alftarholl
  6. 4050 SMVEI 0Perkiraan geologi
    BCE 4050 – Berlangsung
    Borgaholl
  7. 4270 SM (±150 tahun)VEI 3Perkiraan geologi
    BCE 4270 – Berlangsung
    Kerholar
  8. 4450 SMVEI 2Perkiraan geologi
    BCE 4450 – Berlangsung
    Selholl North
  9. 4500 SMVEI 0Perkiraan geologi
    BCE 4500 – Berlangsung
    Selholl South
  10. 6250 SMVEI ?Perkiraan geologi
    BCE 6250 – Berlangsung
  11. 7750 SMVEI 3Perkiraan geologi
    BCE 7750 – Berlangsung
    Seydisholar

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.