Archive · collection · 2008

Composition of melts and minerals from volcanic rocks of the Kuril-Kamchatka Arc

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In this paper allivalites, coarse- and giant-textured olivine-anorthite rocks occurring as separate blocks in the eruption products of many volcanoes from the frontal part of the Kuril-Kamchatka Arc are under consideration.

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New data are reported on petrography, mineralogy, and composition of melt inclusions in minerals from ten allivalite samples collected at Ksudach, Ilinsky, Zavaritsky, Kudryavy, and Golovnin Volcanoes.

Crystallization temperatures of allivalite minerals were estimated as 970-1080°C at melt water content of 3.0-3.5 wt % and oxygen fugacity NNO=1-2. Genetic connection was established between compositions of melt inclusions and interstitial glasses in allivalites and volcanic rocks. Cumulate nature of allivalites was demonstrated.

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Using mass balance calculations, degree of fractionation of primary melts during formation of cumulate layers was estimated for various volcanoes as 22-46%.

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From keywords: Earth & Environmental Science

Provenance · 1 source records, 7 field assertions

Source	Key	Last seen	Raw
PANGAEA	oai:pangaea.de:doi:10.1594/PANGAEA.744594	15 d ago	JSON v1

Field	Assertion	Extractor	Evidence
access_level	source · PANGAEA	connector:pangaea@1.0.0
concepts[field].local:field:earth-environmental	mapping · PANGAEA	connector:pangaea@1.0.0
description	source · PANGAEA	connector:pangaea@1.0.0	/metadata/dc/description
license	source · PANGAEA	connector:pangaea@1.0.0	/metadata/dc/rights
publication_date	source · PANGAEA	connector:pangaea@1.0.0
spatial	source · PANGAEA	connector:pangaea@1.0.0
title	source · PANGAEA	connector:pangaea@1.0.0	/metadata/dc/title

Composition of melts and minerals from volcanic rocks of the Kuril-Kamchatka Arc

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