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Discussion papers
https://doi.org/10.5194/essd-2019-202
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2019-202
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: data description paper 30 Oct 2019

Submitted as: data description paper | 30 Oct 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Science Data (ESSD).

TephraKam: Geochemical database of glass compositions in tephra and welded tuffs from the Kamchatka volcanic arc (NW Pacific)

Maxim V. Portnyagin1,2, Vera V. Ponomareva3, Egor A. Zelenin4, Lilia I. Bazanova3, Maria M. Pevzner4, Anastasia A. Plechova2, Aleksei N. Rogozin3, and Dieter Garbe-Schönberg5 Maxim V. Portnyagin et al.
  • 1GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, 24148, Germany
  • 2V.I.Vernadsky Institute for Geochemistry and Analytical Chemistry, Moscow, 119991, Russia
  • 3Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky, 683006, Russia
  • 4Geological Institute, Moscow, 119017, Russia
  • 5Institüt für Geowissenschaften, Christian-Albrecht-Universität zu Kiel, Kiel, 24118, Germany

Abstract. Tephra layers produced by volcanic eruptions are widely used for correlation and dating of various deposits and landforms, for synchronization of disparate paleoenvironmental archives, and for reconstruction of magma origin. Here we present our original database TephraKam, which includes chemical compositions of volcanic glass in tephra and welded tuffs from the Kamchatka volcanic arc. The database contains 7049 major element analyses obtained by electron microprobe and 738 trace element analyses obtained by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) on 487 samples collected in proximity of their volcanic sources in all volcanic zones in Kamchatka. The samples characterize about 300 explosive eruptions, which occurred in Kamchatka from the Pliocene until historic times. Precise or estimated ages for all samples are based on published 39Ar/40Ar dates of rocks and 14C dates of host sediments, statistical age modelling and geologic relationships with dated units. All data in TephraKam is supported by information about source volcanoes and analytical details. Using the data, we present an overview of geochemical variations of Kamchatka volcanic glasses and discuss application of this data for precise identification of tephra layers, their source volcanoes, temporal and spatial geochemical variations of pyroclastic rocks in Kamchatka. The data files described in this paper are available on ResearchGate at https://doi.org/10.13140/RG.2.2.23627.13606 (Portnyagin et al., 2019).

Maxim V. Portnyagin et al.
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TephraKam: Geochemical database of glass compositions in tephra and welded tuffs from the Kamchatka volcanic arc (NW Pacific). Data files (Version 2019.10.21) M. V. Portnyagin, V. V. Ponomareva, E. A. Zelenin, L. I. Bazanova, M. M. Pevzner, A. A. Plechova, A. N. Rogozin, D., and Garbe-Schönberg https://doi.org/10.13140/RG.2.2.23627.13606

Maxim V. Portnyagin et al.
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Short summary
Tephra is fragmented material produced by explosive volcanic eruption. Geochemically characterized tephra layers are excellent time-marker horizons and samples of magma composition. TephraKam is database of the ages and chemical composition of volcanic glass in tephra from the Kamchatka volcanic arc (NW Pacific). TephraKam enables the identification of tephra sources, correlation and dating of natural archives, and reconstruction of spatiotemporal evolution of volcanism in Kamchatka.
Tephra is fragmented material produced by explosive volcanic eruption. Geochemically...
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