Cel Volcanic eruptions are driven by the exsolution and escape of dissolved volatiles. Fast and efficient escape of volatiles leads to a lower potential for an explosive eruption: defusing it. Yet, despite recognition of the importance of volatile escape, the mechanisms and kinetics of degassing remain unclear. This study aims to use a pioneering approach to reconstruct the escape of volcanic gases.Exsolved gases are ephemeral and do not survive eruption. However textural evidence such as vesicles, fractures and veins in erupted magma lingers. Moreover, new data shows that chemical signals of degassing endure, not only in minerals, but also in quenched melt.Volcanic gases are enriched in metals such as Hg, Tl, and Cu resulting in ore deposits and contributing to global metal emissions. Such enrichment is based on the preference of these metals for a gas phase. This project will establish how metals partition between volcanic gas and melt (basalt and rhyolite), how quickly such equilibrium partitioning is reached, and what can be learned regarding magma degassing from gas emissions and melt compositions as measured at volcanoes.The first part of the project focuses on obtaining gas-melt partition coefficients and diffusivities of metals. The second part of the project involves comparison to natural samples. Metal concentration variations will be mapped within an exposed magmatic conduit and in recent explosively erupted volcanic rocks. The third part of the project aims to model the escape of volcanic gases using reactive flow modeling.The combined results of this project will not only show how and how fast volcanic gases escape, but also form the basis of a new approach to quantifying historic (from glass shards) and future (from gas emissions) magmatic metal release to potential ore forming systems as well as to the atmosphere. Moreover, linking gas chemistry to dynamic degassing processes in a quantitative model will aid prediction of eruption style and timing. Dziedzina nauki natural sciencesearth and related environmental sciencesgeologyvolcanologyengineering and technologymaterials engineering Program(-y) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Temat(-y) ERC-SG-PE10 - ERC Starting Grant - Earth system science Zaproszenie do składania wniosków ERC-2012-StG_20111012 Zobacz inne projekty w ramach tego zaproszenia System finansowania ERC-SG - ERC Starting Grant Instytucja przyjmująca THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD Wkład UE € 1 604 211,00 Adres WELLINGTON SQUARE UNIVERSITY OFFICES OX1 2JD Oxford Zjednoczone Królestwo Zobacz na mapie Region South East (England) Berkshire, Buckinghamshire and Oxfordshire Oxfordshire Rodzaj działalności Higher or Secondary Education Establishments Kontakt administracyjny Gill Wells (Ms.) Kierownik naukowy Kim Berlo (Dr.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych Beneficjenci (1) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD Zjednoczone Królestwo Wkład UE € 1 604 211,00 Adres WELLINGTON SQUARE UNIVERSITY OFFICES OX1 2JD Oxford Zobacz na mapie Region South East (England) Berkshire, Buckinghamshire and Oxfordshire Oxfordshire Rodzaj działalności Higher or Secondary Education Establishments Kontakt administracyjny Gill Wells (Ms.) Kierownik naukowy Kim Berlo (Dr.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych