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Records: 1974
Articles
Мелекесцев И.В. Самый крупный в мире аллохтон и проблема Атлантиды // Вестник КРАУНЦ. Серия: Науки о Земле. 2007. Вып. 10. № 2. С. 129-132.
   Annotation
The problem with existing of the Atlantis and its position is still debatable. A.A. Gorodnitsky (2006) suggested that it was situated at the top of the Amper sea-mountain, but it is also seems to be unlikely. More realistic version is the Atlantis was situated at an island within a seismically active western shelf of Iberian peninsula. This zone is characterized with a large number of giant underwater block-sliding, so-called allochthons as well as smaller landslides. The largest of them has a size of 180x300 km. We suppose it was slided down the sea during some seismic catastrophe and carried the Atlantis, situated atop of this block, under the water.
Мелекесцев И.В. Сильные вулканические пеплопады в районе г. Петропавловска-Камчатского // Вопросы географии Камчатки. 1989. № 10. С. 101-107.
Мелекесцев И.В. Сопка Средняя (Ключевская группа вулканов, Камчатка) - гигантский аллохтон, а не самостоятельный вулкан // Вулканология и сейсмология. 2005. № 3. С. 9-14.
   Annotation
It is shown in the present study, in contrast to what has been thought geretofore, that Sredyaya Mt in the Klyuchevskoi Volcanic Group, Kamchatka is not a volcanic formation of its own, but a giant (of volume about 1 km3) allochthon. The allochthon resulted from the collapse and displacement of an enormous monolithic block from the summit of Pra-blizhnyaya Sopka Volcano which came into being when a Hawai'ian type caldera formed there about 8600 14C B. P.
Мелекесцев И.В. Сопка Средняя (Ключевская группа вулканов, Камчатка) - гигантский аллохтон, а не самостоятельный вулкан // Материалы ежегодной конференции, посвященной Дню вулканолога, Петропавловск-Камчатский, 30-31 марта 2004 г. Петропавловск-Камчатский: "Наука – для Камчатки". 2004. С. 3-10.
Мелекесцев И.В. Типы и возраст действующих вулканов Курило-Камчатской зоны // Бюллетень вулканологических станций. 1973. № 49. С. 17-23.
Мелекесцев И.В., Андреев В.Н., Кирьянов В.Ю., Овсянников А.А. Реконструкция эруптивной деятельности вулкана Момотомбо (Никарагуа) для оценки вулканической опасности // Вулканизм и связанные с ним процессы. Тезисы докладов VI Всесоюзного вулканологического совещания. Петропавловск-Камчатский, сентябрь 1985 г. Петропавловск-Камчатский: ИВ ДВНЦ АН СССР. 1985. Вып. 1. С. 45-46.
Мелекесцев И.В., Базанова Л.И., Двигало В.Н. Когда и почему камчатский вулкан Авачинская сопка перестал быть "востроверхим"? // Вулканология и сейсмология. 2005. № 2. С. 8-13.
   Annotation
It is shown that the young andesite-basaltic cone of Avacha Volcano was more complex, of the "cone-in-cone" type, in the 18th and early 19th century than is now the case. The upper cone was then nested in a crater of diameter 350-400 m, its base being at absolute heights of 2720 m, while the summit crater had a diameter of 50-100 m at absolute heights of 2800-2850 m. Since the summit crater was small, S.P. Krasheninnikov was induced to call Avacha Volcano a "peaked" one in 1738. The major eruption of 27-29 June, 1827 nearly anni-hilated the nested upper cone, while Young Cone of Avacha Volcano acquired nearly the present-day outward shape.
Мелекесцев И.В., Базанова Л.И., Двигало В.Н. Почему в 1738 году С.П. Крашенинников назвал Авачинскую сопку на Камчатке "Востроверхой"? // Тезисы докладов ежегодной научной сессии, посвященной Дню вулканолога, 3-4 апреля 2002 г., г. Петропавловск-Камчатский. Петропавловск-Камчатский: КГПУ. 2002. С. 4-6.
Мелекесцев И.В., Брайцева О.А. Гигантские обвалы на вулканах // Вулканология и сейсмология. 1984. № 4. С. 14-23.
Мелекесцев И.В., Брайцева О.А., Базанова Л.И., Пономарева В.В., Сулержицкий Л.Д. Особый тип катастрофических эксплозивных извержений - голоценовые субкальдерные извержения Хангар, Ходуткинский "маар", Бараний Амфитеатр (Камчатка) // Вулканология и сейсмология. 1996. № 2. С. 3-24.
   Annotation
The devestating explosive eruptions at Khangar (about 7000 14C BP), Khodutkinskiy "maar" (about 2800 14C BP), and Baraniy Amphitheater (about 1500 14C BP) are classified into a special type, subcaldera eruptions. They were analogues of caldera-forming eruptions by their dynamics, erupted volume (1.5-15 km^3), aspect, facies family, and the composition {from dacites to rhyolites) of the pyroclastics, but were not followed by the development of collapse calderas whose cavity volumes would fit the volume of discharge pyroclastics when converted to solid rock (magma). The discrepancy between a "caldera-like" aspect of the pyroclastics and the type of erupting vent can probably be explained by the greal depths of reservoirs of silicic magma which were "galvanized" when hot basaltic magma was injected into them. A subcaldera eruption usually began with a violent discharge of tephra, much greater in volume than the other volcanic products, to be followed by the formation of pyroclastic flows associated with pyrociastic surges. This sequence of events repeated itself several times during the eruption. No major explosion breccias were formed. Intensive ashfall involved areas of n * 10^4 ... n * 10^5 km^2, so that dated tephra beds have been excellent regional marker horizons. Subcaldera eruptions are hypothesized to have influenced the Earth's climate and are reflected as synchronous acid peaks in the Greenland glacier shield.