Magma degassing during 7600 14C Kurile Lake caldera-forming eruption and its climatic impact

Autor:	O. V. Dirksen, P. Yu. Plechov, Anna Balashova
Rok vydání:	2010
Předmět:	Explosive eruption Geochemistry engineering.material Atmosphere Igneous rock Magma Earth and Planetary Sciences (miscellaneous) engineering General Earth and Planetary Sciences Plagioclase Caldera Phenocryst Geology Melt inclusions
Zdroj:	Doklady Earth Sciences. 433:974-977
ISSN:	1531-8354 1028-334X
Popis:	The main goal of this investigation is estimating volume of volatile emission, atmospheric and climatic impact of the Kurile Lake caldera-forming eruption, one of the Earth’s largest Holocene explosive eruptions. The volatile content of magma before the eruption was estimated by comparing H2O, S, Cl and F contents in natural quenched glassy melt inclusions trapped by plagioclase phenocrysts. The volatile content of igneous rocks after eruption was estimated by comparing concentrations of degassed matrix glasses. As a result of KO-eruption not more than (3.7–4.2) × 1012 kg of water, (4.3–4.9) × 1010 kg of chlorine, (8.6–9.8) × 109 kg of fluorine and (2.6–2.9) × 1010 kg of sulphur were injected into the atmosphere. This eruption had to produce an important climatic impact.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::132f1d6623fed5b28206948dbc181402 https://doi.org/10.1134/s1028334x10070275 Zobrazit plný text záznamu Plný text ve formátu PDF