Magma degassing during 7600 14C Kurile Lake caldera-forming eruption and its climatic impact |
| |
Authors: | Plechov P Yu Balashova A L Dirksen O V |
| |
Institution: | 1.Geological Department of Moscow State University, Moscow, Russia ;2.Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky, Russia ; |
| |
Abstract: | 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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|