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 2001
Рожков А.М., Фазлуллин С.М., Марков И.А., Шапарь В.Н. Газы гидротерм Карымского вулканического центра // Вулканология и сейсмология. 2001. № 6. С. 58-67.    Annotation
Проведены исследования газового состава и изотопного отношения гелия и 4He/20Ne гидротерм в пределах Карымского вулканического центра и характера их изменений в связи с активизацией тек-тоно-магматической обстановки в этом регионе, проявившейся в конце 1995 г. и в начале 1996 г. в виде серии сильных землетрясений, извержения Карымского вулкана и мощного подводного извержения, эпицентр которого располагался в Карымском озере. Опробованы как ранее существовавшие здесь источники Карымские и Академии Наук, так и вновь образовавшиеся гидротермы и фумарола в районе подводного извержения. Совместно в этим изучен состав растворенных газов оз. Карымское
Славина Л.Б., Гарагаш И.А., Горельчик В.И., Иванов Б.В., Белянкин Г.А. Скоростное строение и напряженно-деформированное состояние земной коры в районе Ключевской группы вулканов Камчатки // Вулканология и сейсмология. 2001. № 1. С. 49-59.
Толстых М.Л., Наумов В.Б., Озеров А.Ю., Кононкова Н.Н. Состав магм извержения 1996 г. Карымского вулканического центра (Камчатка) по данным изучения расплавных включений // Геохимия. 2001. № 5. С. 498–509
Федотов С.А. Вулканология и сейсмология на рубеже веков и тысячелетий // Вулканология и сейсмология. 2001. № 1. С. 3-4.
Федотов С.А., Двигало В.Н., Жаринов Н.А., Иванов В.В., Селиверстов Н.И., Хубуная С.А., Демянчук Ю.В., Марков И.А., Осипенко Л.Г., Смелов Н.П. Извержение вулкана Шивелуч в мае - июле 2001 г. // Вулканология и сейсмология. 2001. № 6. С. 3-15.    Annotation
Дано описание и представлены первые результаты изучения начальной стадии извержения вулкана Шивелуч в мае-июле 2001 г. Происходили рои землетрясений, образование трех новых больших андезитов лавовых куполов, крупные взрывы и другие связанные явления. Приведены сведения о проявлениях активности вулкана в предшествующий извержению период. Представлены результаты визуальных и сейсмологических наблюдений, проведенных во время подготовки извержения и его начальной стадии, результаты изучения динамики извержения по данным аэрофотосъемки и геодезических наблюдений, данные обследования пирокластических и грязевых потоков, наблюдавшихся во время начальной стадии извержения.
 2000
Belousov A., Belousova M., Voight B. Tsunamis Generated by Subaquatic Volcanic Explosions: Unique Data from 1996 Eruption in Karymskoye Lake, Kamchatka, Russia // Pure and Applied Geophysics. 2000. V. 157. № 6-8. P. 1135-1143. doi:10.1007/s000240050021.
Belousov Alexander, Belousova Marina Formation of partially submerged tuff ring during the 1996 sublacustrine surtseyan eruption in Karymskoye lake, Kamchatka,Russia // Terra Nostra. International Maar Conference: GeoForschungs Zentrum Potsdam. 2000. V. 6. P. 42-52.
Bogoyavlenskaya G.E., Naumov V.B., Tolstykh M.L., Ozerov A.Yu., Khubunaya S.A. Magma compositions of Bezymianny, Shiveluch and Karymsky volcanoes according to the data on study of glass inclusions (Kamchatka) // Abstracts of IAVCEI General Assembly, 18-22 July 2000. Bali, Indonesia. 2000. P. 87
Dorendorf F., Churikova T., Koloskov A., Wörner G. Late Pleistocene to Holocene activity at Bakening volcano and surrounding monogenetic centers (Kamchatka): volcanic geology and geochemical evolution // Journal of Volcanology and Geothermal Research. 2000. V. 104. № 1–4. P. 131 - 151. doi: 10.1016/S0377-0273(00)00203-1.    Annotation
The different roles of variable mantle sources and intra-crustal differentiation processes at Bakening volcano (Kamchatka) and contemporaneous basaltic monogenetic centers are studied using major and trace elements and isotopic data.

Three suites of volcanic activity are recognized: (1) plateau basalts of Lower Pleistocene age; (2) andesites and dacites of the Bakening volcano, the New Bakening volcano dacitic centers nearby; and (3) contemporaneous basaltic cinder cones erupted along subduction zone—parallel N–S faults. Age-data show that the last eruptions in the Bakening area occurred only 600–1200 years ago, suggesting the volcano is potentially active.

Major element variations and petrographic observations provides evidence for a fractionation assemblage of olivine, clinopyroxene, ±plagioclase, ±magnetite (?) within the basaltic suite. The fractionation in the andesites and dacites is dominated by amphibole, clinopyroxene, orthopyroxene and plagioclase plus minor amounts of magnetite and apatite. The youngest cpx-opx-andesites of Bakening main volcano deviate from that trend. Their source was probably formed by mixing of basaltic magmas into the silicic magma chamber of the Bakening volcano. Overall trace element patterns as well as the Sr–Nd–Pb isotopic compositions are quite similar in all rocks despite large differences in their chemical composition (from basalt to rhyodacite). In detail however, the andesite–dacites of the central Bakening volcano show a stronger enrichment in the more incompatible elements and depletion in HREE compared to the monogenetic basaltic centers. This results in a crossing of the REE-pattern for the two suites. The decrease in the HREEs can be explained by amphibole fractionation. A slab component is less likely because it would result in fractionation of the HREE from each other, which is not observed. The higher relative amounts of LILE in the dacitic and the large scatter in the basaltic rocks must be the result of a variable source enrichment by slab-derived fluids overprinting a variable depleted mantle wedge. The plateau basalts are less depleted in HFSE and show a more fractionated HREE pattern. These lavas could either result from a slab component or the addition of an OIB-type enriched mantle in their source.
Dorendorf Frank, Wiechert Uwe, Wörner Gerhard Hydrated sub-arc mantle: a source for the Kluchevskoy volcano, Kamchatka/Russia // Earth and Planetary Science Letters. 2000. V. 175. № 1–2. P. 69 - 86. doi: 10.1016/S0012-821X(99)00288-5.    Annotation
Oxygen isotope ratios of olivine and clinopyroxene phenocrysts from the Kluchevskoy volcano in Kamchatka have been studied by CO2 and ArF laser techniques. Measured δ18O values of 5.8–7.1‰ for olivine and 6.2–7.5‰ for clinopyroxene are significantly heavier than typical mantle values and cannot be explained by crustal assimilation or a contribution of oceanic sediments. Positive correlations between δ18O and fluid-mobile elements (Cs, Li, Sr, Rb, Ba, Th, U, LREE, K) and a lack of correlation with fluid-immobile elements (HFSE, HREE) suggest that 18O was introduced into the mantle source by a fluid from subducted altered oceanic basalt. This conclusion is supported by radiogenic isotopes (Sr, Nd, Pb). Mass balance excludes simple fluid-induced mantle melting. Instead, our observations are consistent with melting a mantle wedge which has been hydrated by 18O-rich fluids percolating through the mantle wedge. 18O-enriched fluids are derived from the subducted oceanic crust and the Emperor seamount chain, which is responsible for a particularly high fluid flux. This hydrated mantle wedge was subsequently involved in arc magmatism beneath Kluchevskoy by active intra-arc rifting.





 

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