scholarly journals The Role of Magma Storage Conditions and Excess Fluids in the Effusive to Explosive Eruption Styles

2021 ◽  
Author(s):  
Sri Budhi Utami ◽  
Joan Andujar ◽  
Fidel Costa ◽  
Bruno Scaillet ◽  
Hanik Humaida
Keyword(s):  
Explosive Eruption ◽  
Storage Conditions ◽  
Magma Storage ◽  
Magma Storage Conditions

scholarly journals Dominica: transcrustal magmatic system and eruptive halogen budgets

2020 ◽  
Author(s):  
Thiebaut d'Augustin ◽  
Hélène Balcone-Boissard ◽  
Georges Boudon ◽  
Caroline Martel ◽  
Etienne Deloule ◽  
...  
Keyword(s):  
Melt Inclusions ◽  
Storage Conditions ◽  
Explosive Eruptions ◽  
Magma Storage ◽  
Equilibrium Data ◽  
Order Of Magnitude ◽  
First Time ◽  
Magma Storage Conditions ◽  
Degassing Budget

<p>Dominica island experienced the largest explosive eruptions (ignimbrites) of the Lesser Antilles arc. The recent revised chronostratigraphy of the Morne Trois Pitons – Micotrin eruptive activity evidenced a series of plinian eruptions that occurred between 18 ka and 9 ka BP. Here we focus on these recent eruptions in order to determine the magma storage conditions at depth and volatile degassing budget. Volatile concentrations (H<sub>2</sub>O, CO<sub>2</sub>) in melt inclusions indicate storage conditions of 200 MPa (~6-8 km deep) and 860-880°C in agreement with experimental constraints from phase-equilibrium data. The magmas were thus stored shallower than those involved during the ignimbritic eruptions (~16 km deep). Magma composition and halogen ratios suggest a common magma origin for all eruptions of Morne Trois Pitons Micotrin volcano in the last 60 kyrs. In addition, for the first time, a complete degassing budget including H<sub>2</sub>O, CO<sub>2</sub>, SO<sub>2</sub>, F, Cl, and Br has been established for all these explosive eruptions. The estimation of their eruptive fluxes towards the atmosphere supports the potential important role of halogen elements in the modification of atmosphere chemistry. Br degassing budget was the same order of magnitude as S whereas F and Cl budgets were 1 and 2 orders of magnitude higher than these two species.</p>

Explosive or effusive style of volcanic eruption determined by magma storage conditions

2021 ◽  
Vol 14 (10) ◽  
pp. 781-786
Author(s):  
Răzvan-Gabriel Popa ◽  
Olivier Bachmann ◽  
Christian Huber
Keyword(s):  
Volcanic Eruption ◽  
Storage Conditions ◽  
Magma Storage ◽  
Magma Storage Conditions

scholarly journals Changes in magma storage conditions following caldera collapse at Okataina Volcanic Center, New Zealand

2015 ◽  
Vol 171 (1) ◽  
Author(s):  
Allison Rubin ◽  
Kari M. Cooper ◽  
Marissa Leever ◽  
Josh Wimpenny ◽  
Chad Deering ◽  
...  
Keyword(s):  
New Zealand ◽  
Storage Conditions ◽  
Volcanic Center ◽  
Caldera Collapse ◽  
Magma Storage ◽  
Magma Storage Conditions

scholarly journals Trachyte Phase Relations and Implication for Magma Storage Conditions in the Chaine des Puys (French Massif Central)

2013 ◽  
Vol 54 (6) ◽  
pp. 1071-1107 ◽  
Author(s):  
C. Martel ◽  
R. Champallier ◽  
G. Prouteau ◽  
M. Pichavant ◽  
L. Arbaret ◽  
...  
Keyword(s):  
Storage Conditions ◽  
Phase Relations ◽  
French Massif Central ◽  
Magma Storage ◽  
Massif Central ◽  
Magma Storage Conditions

Magma storage conditions and control of eruption regime in silicic volcanoes: experimental evidence from Mt. Pelée

1998 ◽  
Vol 156 (1-2) ◽  
pp. 89-99 ◽  
Author(s):  
C MARTEL ◽  
M PICHAVANT ◽  
J BOURDIER ◽  
H TRAINEAU ◽  
F HOLTZ ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Storage Conditions ◽  
Magma Storage ◽  
And Control ◽  
Magma Storage Conditions

scholarly journals Experimental Constraints on Dacite Pre-eruptive Magma Storage Conditions beneath Uturuncu Volcano

2014 ◽  
Vol 55 (4) ◽  
pp. 749-767 ◽  
Author(s):  
Duncan D. Muir ◽  
Jon D. Blundy ◽  
Alison C. Rust ◽  
James Hickey
Keyword(s):  
Storage Conditions ◽  
Magma Storage ◽  
Magma Storage Conditions
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