K-Ar ages of lavas from Tateyama Volcano, Toyama Prefecture, Central Japan

Autor:	Akikazu Matsumoto, Ken Shibata, Shoji Fujii
Rok vydání:	1991
Předmět:	geography geography.geographical_feature_category Volcano Lava Stage (stratigraphy) Pumice Geochemistry Geology Third stage Seismology
Zdroj:	JOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY. 86:278-282
ISSN:	1881-3275 0914-9783
DOI:	10.2465/ganko.86.278
Popis:	K-Ar age determination based on the Peak Height Comparison Method has been made on four lavas from Tateyama Volcano, which is located in the northern margin of the Norikura Volcanic Chain in Central Japan. Two lavas that erupted in the First and Third Stages gave significant K-Ar ages as 133 ± 22 and 47 ± 9 ka, respectively. K-Ar age of the First Stage Lava in Tateyama Volcano, incorporated with some ages already reported on Norikura and Yakedake Volcanoes also belonging to the Norikura Volcanic Chain, clarified that the activity of this Volcanic Chain commenced in the order of Norikura, Tateyama and Yakedake Volcanoes. K-Ar age of the Third Stage Lava is consistent with that of the Daisen-Kurayoshi Pumice (DKP: ca. 48 ka) covering the Third Stage Lava.
Databáze:	OpenAIRE
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