Magma degassing and its impact on the Earth's atmosphere: from magma oceans to lava lakes / Impact atmosphérique du dégazage magmatique : des océans de magma aux lacs de lave
Authors
Camille Daffos, Caroline Martel, Laurent Arbaret, Rémi Champallier
- Bibliographic Reference
- Camille Daffos, Caroline Martel, Laurent Arbaret, Rémi Champallier. Bubble connectivity in experimentally-sheared crystal-bearing silicic melts. Comptes Rendus. Géoscience, 2024, 356 (S1), pp.1-18. ⟨10.5802/crgeos.214⟩. ⟨insu-04267660⟩
- DOI
- https://doi.org/10.5802/crgeos.214
- Funding
- CNRS-INSU TelluS program
- HAL Collection
- ['Observatoire de Paris', "INSU - Institut National des Sciences de l'Univers", 'Bureau de Recherches Géologiques et Minières', 'CNRS - Centre national de la recherche scientifique', "Université d'Orléans", "institut des sciences de la terre d'orléans", "Observatoire des Sciences de l'Univers en région Centre", 'Labex Voltaire', 'Université Paris sciences et lettres', 'Observatoire de Paris - PSL', 'ANR']
- HAL Identifier
- 4267660
- Institution
- ['Bureau de Recherches Géologiques et Minières (BRGM)', "Institut national des sciences de l'Univers", 'Observatoire de Paris', "Université d'Orléans"]
- Laboratory
- Institut des Sciences de la Terre d'Orléans - UMR7327
- Published in
- France
Table of Contents
- 1. Introduction 3
- 2. Methods 5
- 2.1. Experimental methods 5
- 2.1.1. Synthesis of crystal-bearing hydrated glasses 5
- 2.1.2. Synthesis of a bubble-bearing magmas 5
- 2.1.3. Torsion experiments 5
- 2.2. Analytical methods 6
- 2.3. Calculations 7
- 3. Results 7
- 3.1. Crystal-free series (serie0) 7
- 3.2. Series with 10% crystals (serie10) 7
- 3.3. Series with 30% crystals (serie30) 8
- 3.4. Series with 50% crystals (serie50) 9
- 4. Discussion 12
- 4.1. Bubble nucleation and growth 12
- 4.1.1. Incomplete H2O exsolution 12
- 4.1.2. Partial loss of bubbles 12
- 4.1.3. Pre-deformation porosity 12
- 4.1.4. Bulk viscosity 13
- 4.2. Effect of the crystal network on porosity development under small shear (< 2) 13
- 4.2.1. Crystalline fabric 13
- 4.2.2. Bubble spatial distribution 13
- 4.2.3. Connectivity development 14
- 4.3. Implications for natural volcanic systems 15
- 5. Conclusions 17
- Conflicts of interest 17
- Acknowledgements 17
- Supplementary data 18
- References 18
