Donnerstag, Dez 25, 2008
Koryaksky volcano, one of Kamchatka's most majestic stratovolcanoes, near Petropavlovsk in the SE, began erupting late on 24 December. ... [mehr]
Koryaksky VulkanKoryaksky in the SE of the Kamchatka peninsula and near its capital Petropavlovsk is one of Kamchatka's most beautiful and prominent stratovolcanoes.
Beschreibung:The large symmetrical Koryaksky stratovolcano is the most prominent landmark of the NW-trending Avachinskaya volcano group, which towers above Kamchatka's largest city, Petropavlovsk.
Erosion has produced a ribbed surface on the eastern flanks of the 3456-m-high volcano; the youngest lava flows are found on the upper western flank and below SE-flank cinder cones. No strong explosive eruptions have been documented during the Holocene. Extensive Holocene lava fields on the western flank were primarily fed by summit vents; those on the SW flank originated from flank vents. Lahars associated with a period of lava effusion from south- and SW-flank fissure vents about 3900-3500 years ago reached Avacha Bay. Only a few moderate explosive eruptions have occurred during historical time. Koryaksky's first historical eruption, in 1895, also produced a lava flow.
(Source: Global Volcanism Program)