Zheltovsky volcano from Vestnik Bay, looking northwest
Rim of presumed Late Pleistocene caldera is seen on the right (ESE) slope of the volcano. Summit part of the volcano consists of a series of extrusive domes of different ages. Mid-Holocene beach ridge, covered with trees and bushes, is at the foreground. The weather is typical for Kamchatka photos.
This is probably the best picture of Opala volcano, taken from ESE. The volcano sits on the northern rim of a large Late Pleistocene caldera (a part of the rim is seen in the low right corner of the picture). Opala is a hystorically active volcano; its last large eruption occurred about 300 years ago. Baranii Amphitheater crater, filled with extrusive domes, is at the foreground. It formed about 1500 years BP and produced 9-10 km3 of rhyolitic tephra.
Author(s): Viktor Dvigalo. IVS FEB RAS
Any use of the image may be carried out only with the permission of the author (authors)
This volcano appears to be the northernmost Holocene vent of the Eastern volcanic belt - frontal, subduction related volcanic zone of Kamchatka. Located farther north enormous Kliuchevskoi volcanic group is shifted westward and likely has a more complicated origin related to the evolution of the Kamchatka-Aleutian corner (the junction of Kamchatka and Aleutian arcs). Vysokii volcano has been active from the beginning of Holocene till at least 2000 14C years BP, when it produced the lava flow seen at this photo. The lava flow is overlain by SH2 (1000 14C years BP) and SH3 (1400 14C years BP) marker ashes from Shiveluch volcano, OP ash (1500 14C years BP) from Baranii Amphitheater crater at the foot of Opala volcano, and by KS1 marker ash from Ksudach.
The rocks of the summit part of the volcano are strongly altered due to hydrothermal activity. Lava flows of the volcano formed about 1500 14C years BP, and are covered by SH2 (1000 14C years BP) and SH3 (1400 14C years BP) marker ashes from Shiveluch volcano as well as by ashes from recent Komarov eruptions.
Smaller volcanic edifice at the right, named Priemysh ("adopted child"), was Khodutka's predecessor. The upper part of Khodutka is destroyed by a large crater probably formed as a result of debris avalanche.
Author(s): Nikolai Smelov. IVS FEB RAS
Any use of the image may be carried out only with the permission of the author (authors)
The crater was formed as a result of the largest Holocene eruption KHG about 6900 years BP. It is 2.1 x 2.8 km large and is filled with the lake 150 m deep; the upper part of an inter-crater dacite extrusive dome(s) forms three small closely spaced islands.
Author(s): Nikolai Smelov. IVS FEB RAS
Any use of the image may be carried out only with the permission of the author (authors)
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