caa a22 4500 606149988 CHVBK 20210128100536.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s00531-015-1156-4 doi (NATIONALLICENCE)springer-10.1007/s00531-015-1156-4 Tephra from andesitic Shiveluch volcano, Kamchatka, NW Pacific: chronology of explosive eruptions and geochemical fingerprinting of volcanic glass [Elektronische Daten] [Vera Ponomareva, Maxim Portnyagin, Maria Pevzner, Maarten Blaauw, Philip Kyle, Alexander Derkachev] The ~16-ka-long record of explosive eruptions from Shiveluch volcano (Kamchatka, NW Pacific) is refined using geochemical fingerprinting of tephra and radiocarbon ages. Volcanic glass from 77 prominent Holocene tephras and four Late Glacial tephra packages was analyzed by electron microprobe. Eruption ages were estimated using 113 radiocarbon dates for proximal tephra sequence. These radiocarbon dates were combined with 76 dates for regional Kamchatka marker tephra layers into a single Bayesian framework taking into account the stratigraphic ordering within and between the sites. As a result, we report ~1,700 high-quality glass analyses from Late Glacial-Holocene Shiveluch eruptions of known ages. These define the magmatic evolution of the volcano and provide a reference for correlations with distal fall deposits. Shiveluch tephras represent two major types of magmas, which have been feeding the volcano during the Late Glacial-Holocene time: Baidarny basaltic andesites and Young Shiveluch andesites. Baidarny tephras erupted mostly during the Late Glacial time (~16-12.8ka BP) but persisted into the Holocene as subordinate admixture to the prevailing Young Shiveluch andesitic tephras (~12.7ka BP-present). Baidarny basaltic andesite tephras have trachyandesite and trachydacite (SiO2<71.5wt%) glasses. The Young Shiveluch andesite tephras have rhyolitic glasses (SiO2>71.5wt%). Strongly calc-alkaline medium-K characteristics of Shiveluch volcanic glasses along with moderate Cl, CaO and low P2O5 contents permit reliable discrimination of Shiveluch tephras from the majority of other large Holocene tephras of Kamchatka. The Young Shiveluch glasses exhibit wave-like variations in SiO2 contents through time that may reflect alternating periods of high and low frequency/volume of magma supply to deep magma reservoirs beneath the volcano. The compositional variability of Shiveluch glass allows geochemical fingerprinting of individual Shiveluch tephra layers which along with age estimates facilitates their use as a dating tool in paleovolcanological, paleoseismological, paleoenvironmental and archeological studies. Electronic tables accompanying this work offer a tool for statistical correlation of unknown tephras with proximal Shiveluch units taking into account sectors of actual tephra dispersal, eruption size and expected age. Several examples illustrate the effectiveness of the new database. The data are used to assign a few previously enigmatic wide-spread tephras to particular Shiveluch eruptions. Our finding of Shiveluch tephras in sediment cores in the Bering Sea at a distance of ~600km from the source permits re-assessment of the maximum dispersal distances for Shiveluch tephras and provides links between terrestrial and marine paleoenvironmental records. Springer-Verlag Berlin Heidelberg, 2015 Explosive eruptions nationallicence Tephra nationallicence Volcanic glass nationallicence Chronology nationallicence Kamchatka nationallicence Shiveluch nationallicence Ponomareva Vera Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky, Russia aut Portnyagin Maxim GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany aut Pevzner Maria Geological Institute, Moscow, Russia aut Blaauw Maarten School of Geography, Archaeology and Palaeoecology, Queen's University Belfast, Belfast, UK aut Kyle Philip Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, NM, USA aut Derkachev Alexander V. I. Il'sichev Pacific Oceanological Institute, Vladivostok, Russia aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1459-1482 1437-3254 104:5<1459 2015 104 531 https://doi.org/10.1007/s00531-015-1156-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00531-015-1156-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ponomareva Vera Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky, Russia aut NATIONALLICENCE 700 1- Portnyagin Maxim GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany aut NATIONALLICENCE 700 1- Pevzner Maria Geological Institute, Moscow, Russia aut NATIONALLICENCE 700 1- Blaauw Maarten School of Geography, Archaeology and Palaeoecology, Queen's University Belfast, Belfast, UK aut NATIONALLICENCE 700 1- Kyle Philip Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, NM, USA aut NATIONALLICENCE 700 1- Derkachev Alexander V. I. Il'sichev Pacific Oceanological Institute, Vladivostok, Russia aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1459-1482 1437-3254 104:5<1459 2015 104 531