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Geochemistry, Mineralogy, Petrology & Volcanology
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EGU Guest blogger

This guest post was contributed by a scientist, student or a professional in the Earth, planetary or space sciences. The EGU blogs welcome guest contributions, so if you've got a great idea for a post or fancy trying your hand at science communication, please contact the blog editor or the EGU Communications Officer to pitch your idea.

Five hundred miles from civilisation: Exploring active volcanism in the South Sandwich Islands

Five hundred miles from civilisation: Exploring active volcanism in the South Sandwich Islands

By Emma Liu – Lecturer in Earth Science, University College London. For more adventures, follow Emma on Twitter! It’s a strange feeling to realise that your closest human neighbours are on the international space station…! We were five hundred miles away from the nearest civilisation and all I could see in every direction was miles and miles of open ocean. There are so few true wilderness en ...[Read More]

#EGU2020 sessions in the spotlight: Magma differentiation: crystals, isotopes, and experiments

#EGU2020 sessions in the spotlight: Magma differentiation: crystals, isotopes, and experiments

Today in the #EGU2020 sessions in the spotlight series (our last one before the holidays!), it’s GMPV8.4’s turn: Magma differentiation: crystals, isotopes, and experiments, organised by Frances Deegan (Uppsala University), Ben Ellis (ETH Zurich), Carmela Freda (INGV Rome) and Valentin Troll (Uppsala University). Keynote speaker: Marian Holness (Cambridge University). Crystals that grow in magmatic ...[Read More]

Can limestone digestion by volcanoes contribute to higher atmospheric carbon dioxide levels?

Can limestone digestion by volcanoes contribute to higher atmospheric carbon dioxide levels?

By Frances Deegan and Ralf Halama Carbon – the element on everyone’s lips. Carbon is unquestionably one of the most important elements on Earth – terrestrial life is carbon-based and so are many of our energy sources. From the perspective of a human time-scale, biological and anthropogenic (caused by human activity) carbon fluxes are very important (e.g. through industrial activity and burni ...[Read More]

How do crystal aggregates form in magma chambers?

How do crystal aggregates form in magma chambers?

By Penny Wieser (PhD student at the University of Cambridge) Clues into the inner workings of volcanoes can be gleamed from material which is erupted at the surface, or that which solidified at depth in the crust. Just before eruption, three main phases are present: a gas phase (containing water, carbon dioxide, sulphur, chlorine etc), a liquid melt phase (the magma), and a solid phase (consisting ...[Read More]