Lewati ke konten utama
← Kembali ke peta
⇄ Bandingkan

Belknap Crater

Belknap

Gunung api perisai · United States · 2094 m

The McKenzie Pass area in the central Oregon Cascades contains one of the largest concentrations of recent volcanism in the United States. Belknap shield volcano, seen here from Black Crater to the SE, is capped by a smaller snow-covered cone. Lava flows from Belknap and the smaller Little Belknap shield volcano in front of it cover nearly 100 km2. Most of the largely unvegetated flows were erupted between about 2,900 and 1,500 years ago.
The McKenzie Pass area in the central Oregon Cascades contains one of the largest concentrations of recent volcanism in the United States. Belknap shield volcano, seen here from Black Crater to the SE, is capped by a smaller snow-covered cone. Lava flows from Belknap and the smaller Little Belknap shield volcano in front of it cover nearly 100 km2. Most of the largely unvegetated flows were erupted between about 2,900 and 1,500 years ago. · Foto: Photo by Lee Siebert, 1995 (Smithsonian Institution). · Wikimedia Commons
Tipe
Gunung api perisai
Negara
United States
Wilayah
North America Volcanic Regions / High Cascades Volcanic Arc
Ketinggian
2094 m
Koordinat
44.285, -121.842
Letusan terakhir
475
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Shield
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The Belknap Crater area near McKenzie Pass in Oregon, north of the Three Sisters volcanoes, was the source of one of the largest concentrations of youthful volcanism in the Cascade Range. The basaltic to basaltic andesite Belknap shield volcano, topped by the Belknap Crater pyroclastic cone and the Little Belknap shield volcano immediately to the east, have produced widespread late Holocene lava flows on all sides, much of which took place between about 3,000 and 1,500 years ago. Eruptions from the NE base of Belknap crater produced lava flows that traveled 15 km W into the McKenzie River valley.

Ringkasan Wikipedia

Ringkasan Inggris

Belknap Crater is a shield volcano in the Cascade Range in the U.S. state of Oregon. Located in Linn County, it is associated with lava fields and numerous subfeatures including the Little Belknap and South Belknap volcanic cones. It lies north of McKenzie Pass and forms part of the Mount Washington Wilderness. Belknap is not forested and most of its lava flows are not vegetated, though there is some wildlife in the area around the volcano, as well as a number of tree molds formed by its eruptive activity.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
5050 BCE~4853 BCE · 1 letusan · VEI maks. ?1104 BCE~906 BCE · 1 letusan · VEI maks. 0709 BCE~512 BCE · 1 letusan · VEI maks. 2278~475 · 1 letusan · VEI maks. 25050 BCE3669 BCE2287 BCE1104 BCE278

Garis waktu rinci

  1. 475 (±215 tahun)VEI 2Perkiraan geologi
    475 – Berlangsung
    Belknap Crater
  2. 685 SM (±50 tahun)VEI 2Perkiraan geologi
    BCE 685 – Berlangsung
    South Belknap and Twin Craters
  3. 1071 SM (±241 tahun)VEI 0Perkiraan geologi
    BCE 1071 – Berlangsung
    Little Belknap
  4. 5050 SMVEI ?Perkiraan geologi
    BCE 5050 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.