2-2-2-2-2-2-2-2-2-2-2-2-2 From: Kyriaki Drymoni <kyriaki.drymoni@xxxxxxxxx> Dear All, I would like to draw your attention to a new on-line course by Agust Gudmundsson entitled: Volcanoes: Their Formation, Form, and Function. The main objectives of the course are to: 1. Explain the main techniques used in obtaining accurate field data in volcanology, with particular emphasis on volcanotectonic structures and processes. 2. Describe in detail the main volcanic structures, including lava flows, pyroclastic layers, dikes, inclined sheets, sills, plugs (necks), shallow magma chambers (exposed as plutons), as seen in the field and how we go about studying them. 3. Explain the physical principles that control the formation and geometries of monogenetic volcanoes and, in particular, polygenetic (central) volcanoes. For the latter, the emphasis is on the role of the shallow magma chamber that acts as a source of the volcano. 4. Explain and illustrate the physical principles that control the formation of shallow magma chambers and their depths below the surface. The emphasis is on the mechanics of dike deflection into sills and the growth of sills into active magma chambers, but the thermal aspects are also considered. 5. Explain how magma chambers may develop magmatic excess pressure that results in magma-chamber rupture and dike injection. The focus is on the relationship between the shallow chamber and its deep-seated source reservoir(s). 6. Explain why many, and perhaps most, injected dikes and inclined sheets do not reach the surface to feed eruptions but rather become arrested on their paths at some crustal depths. Discuss the wide implications these observations and associated theories have for reliable assessment of volcanic hazards. 7. Explain the physical principles that control the formation of collapse calderas. Why do some caldera collapses result in eruptions while others do not? Why are caldera collapses in a given volcano rare in relation to the frequency of dike/sheet injections and eruptions of that volcano? 8. Explain the physical principles of very large eruptions; those that pose catastrophic risk, or even existential risk, to humankind. For further information and registration, please use the following link: https://urldefense.com/v3/__https://ingeoexpert.com/en/courses-online/volcanoes-their-formation-form-and-function-course/__;!!IKRxdwAv5BmarQ!PufZc5vUT8E4XJJN5SbcVtXfmGURsC1tXntVBKCMj5HyKj0rqN7pleXPNAlMLcY$ <https://urldefense.com/v3/__https://ingeoexpert.com/en/courses-online/volcanoes-their-formation-form-and-function-course/__;!!IKRxdwAv5BmarQ!Nl4kfIZyDZxkNiV_owiutndXBuJsSZW1wgTFFjfWBUFz8jC0cZwGKQfBlg8YCwk$> 2-2-2-2-2-2-2-2-2-2-2-2-2 ------------------------------
