Скачать или смотреть Lecture 5.3 - Flow of viscous magmas and eruption styles (Volcanoes, magmas and their geochemistry)

Lecture on flow of viscous magmas and eruption styles from the 2nd year undergraduate igneous petrology and geochemistry course given at the University of Copenhagen in 2022/2023.

The lectures are split into three roughly 30 min to 1 hour segments each week, covering key aspects of geochemistry and igneous petrology within the overall framework of different tectonic settings where magmas are produced on Earth. The lectures were accompanied by a field trip to Spain and a series of practical exercises that I refer to, but obviously can't be uploaded in the same way...

I encourage students to interrupt and ask question, some of which may not be picked up well on the microphone, but I hope the answers will still be useful so I have no cut these parts out. Microphone quality may be a bit mixed in the first week but should improve from lecture 2.1 onwards.

Lectures:

• Lecture 1.1 Introduction
• Lecture 1.2 Mid-ocean ridges
• Lecture 1.3 Oceanic crust

• Lecture 2.1 Basalt crystallisation and phase diagrams
• Lecture 2.2 Major element geochemistry
• Lecture 2.3 Mantle plumes and ocean islands

• Lecture 3.1 Alkali and tholeiitic magmas
• Lecture 3.2 Trace elements
• Lecture 3.3 Rare Earth Elements and LIPs

• Lecture 4.1 Magma chamber processes
• Lecture 4.2 Magma chamber processes part 2; Subduction zones part 1
• Lecture 4.3 Subduction zones part 2

• Lecture 5.1 Volatiles
• Lecture 5.2 Magma structure and viscosity; Basaltic lava flows
• Lecture 5.3 Flow of viscous magmas; Eruption styles

• Lecture 6.1 Explosive eruption products, volcano morphology and tectonics
• Lecture 6.2 Granitoids part 1
• Lecture 6.3 Granitoids part 2

• Lecture 7.1 - Revision - rocks and minerals
• Lecture 7.2 - Revision - key concepts
• Lecture 7.3 - Revision - magma chamber proceses, volcanology, tectonic settings