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GEOREF RECORD

High-K basaltic trachyandesite xenoliths in pyroclastic deposits from the Bezymianny Volcano (Kamchatka)

V. O. Davydova, P. Yu. Plechov, V. D. Shcherbakov and A. B. Perepelov
High-K basaltic trachyandesite xenoliths in pyroclastic deposits from the Bezymianny Volcano (Kamchatka)
Russian Geology and Geophysics (September 2018) 59 (9): 1087-1099

Abstract

Bezymianny is an active andesitic volcano of the Klyuchevskaya group, and its eruptive products are xenolith- and enclave-bearing basaltic andesites and dacites. Here we report the first occurrence of clinopyroxene-plagioclase high-potassium basaltic trachyandesite xenoliths (51.84-53.00 wt.% SiO (sub 2) , 0.45-1.95 wt.% K (sub 2) O) crystallized in the temperature range 1120-840 degrees C in products of modern eruptions (2007, 2011, 2012). Basaltic trachyandesite differ systematically in petrologic and geochemical characteristics from all previously studied rocks from the Bezymianny volcano. They correspond to the clinopyroxene-plagioclase porphyry rocks from the foot of the Tolbachik volcanoes.


ISSN: 1068-7971
Serial Title: Russian Geology and Geophysics
Serial Volume: 59
Serial Issue: 9
Title: High-K basaltic trachyandesite xenoliths in pyroclastic deposits from the Bezymianny Volcano (Kamchatka)
Affiliation: Lomonosov Moscow State University, Moscow, Russian Federation
Pages: 1087-1099
Published: 201809
Text Language: English
Publisher: Allerton Press, New York, NY, United States
References: 35
Accession Number: 2022-003810
Categories: Quaternary geologyIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables
N51°00'00" - N65°00'00", E155°00'00" - E175°00'00"
Secondary Affiliation: Russian Academy of Sciences, A.P. Vinogradov Institute of Geochemistry, RUS, Russian Federation
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2022
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