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Harrat Rahat

Rahat, Harrat

Medan gunung api · Saudi Arabia · 1744 m

The northern part of Saudi Arabia's largest lava field, 20,000 km2 Harrat Rahat, is seen in this NASA International Space Station image (N to the top left). Harrat Rahat extends for 300 km S of the city of Madinah (Medina), the light-colored area at the top-center. Although basaltic scoria cones are more common, small shield volcanoes and lava domes are also present. The most well-known eruption took place in 1256 CE, when the large dark-colored flow seen extending to the upper right traveled 23 km to within 4 km of Madinah.
The northern part of Saudi Arabia's largest lava field, 20,000 km2 Harrat Rahat, is seen in this NASA International Space Station image (N to the top left). Harrat Rahat extends for 300 km S of the city of Madinah (Medina), the light-colored area at the top-center. Although basaltic scoria cones are more common, small shield volcanoes and lava domes are also present. The most well-known eruption took place in 1256 CE, when the large dark-colored flow seen extending to the upper right traveled 23 km to within 4 km of Madinah. · Foto: NASA International Space Station image ISS001-344-27, 2001 (http://eol.jsc.nasa.gov/). · Wikimedia Commons
Tipe
Medan gunung api
Negara
Saudi Arabia
Wilayah
Arabia-Central Asia Volcanic Regions / Western Arabia Volcanic Province
Ketinggian
1744 m
Koordinat
23.080, 39.780
Letusan terakhir
1256
Kondisi tektonik
Intraplate / Continental crust (> 25 km)
Bentuk lahan
Cluster
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

Harrat Rahat, Saudi Arabia's largest lava field, covers 20,000 km2 and extends for 300 km S of Madinah (Medina). Four coalescing lava fields erupted from offset NNW-trending vent systems comprise the field, which has an average width of 60 km. Lava flows extend as far as 100 km W of the axis of the field. Basaltic scoria cones dominate, but the volcanic field has also produced silicic trachy-basaltic to trachytic rocks. Small shield volcanoes and lava domes with associated pyroclastic flow and surge deposits are also present. Activity has migrated to the north over time, resulting in eruptions near Madinah. The best-known eruption took place in 1256 CE, when a 0.5 km3 lava flow erupted from six aligned scoria cones and traveled 23 km to within 4 km of Madinah.

Ringkasan Wikipedia

Ringkasan Inggris

Ḥarrat Rahāṭ is a volcanic lava field in the Hejazi region of Saudi Arabia. In 1256 CE, a 0.5 km3 (0.12 cu mi) lava flow erupted from six aligned scoria cones, and traveled 23 km to within 4 km of the Islamic holy city of Medina; this was its last eruption. There were earlier eruptions, such as in 641 CE, which made finger-like flows to the east of the 1256 CE flow. It is the biggest lava field in Saudi Arabia. Nearby is Al Wahbah crater.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
641~706 · 1 letusan · VEI maks. 21227~1292 · 2 letusan · VEI maks. 364177196710971227

Garis waktu rinci

  1. 1292VEI ?Perkiraan geologi
    1292 – Berlangsung
    Near Madinah
  2. 1256VEI 3Teramati
    1256-06-05 – 1256-07-27
    Fissure 20 km SE of Madinah
  3. 641VEI 2Teramati
    641 – Berlangsung
    West of Madinah

Tautan eksternal

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