Do this automatically from now on
Udokan volcanpyroclastic cones 2180 m / 7,152 ft
Southeastern Russia, 56.28°N / 117.77°E Condition actuelle: en sommeil (1 sur 5)
Style éruptif tipique: effusif
Eruptions du volcan Udokan: 220 BC ± 50, 2670 BC ± 100, 5990 BC ± 100, 6210 BC ± 100, 7290 BC ± 100 years (radiocarbon dates) Derniers séismes proches:
The latest eruption took place at Chepe volcano about 2200 years ago. Introduction:The Udokan Plateau volcanic field belongs to a 3000 sq km large area of quaternary volcanism at the eastern margin of the Baikal Rift System. Activity in this area dates back to the Miocene.Late-Pleistocene to Holocene volcanic centers are concentrated along 3 major lineaments, and many eruptions were localized along fissures trending NW-SE and NE-SW. Dated Holocene volcanic centers are located on a 20-km-long line at the SW side of the volcanic field, but Holocene cinder cones also occur in the NE Udokan Plateau. Seismic activity has been recorded at depths of 15 to 20 km beneath some of the cones. The Udokan volcanic field is dominated by basaltic cinder cones, but basal trachytic ignimbrites are also overlain by lava domes and flows, and trachytic maars were formed during the final stages of activity. --- Source: Smithsonian Institution / GVP |
 Cliquez ici pour recommander cette page à un ami
|
