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Stress fields around magma chambers influenced by elastic thermo-mechanical deformation: implications for forecasting chamber failure
(2021)
Defining the conditions that lead to the rupture of a magma chamber is essential to forecast eruptions. So far, models simulating magma chamber dynamics have neglected the effects of elastic thermal expansion in the host ...
Reconciling mechanical models of caldera ring-fault nucleation within the transcrustal magmatic system paradigm
(Elsevier B.V., 2024)
© 2024 Elsevier B.V.The formation of a collapse caldera requires the nucleation of circumferential ring-faults that connect an underlying magma chamber with the Earth's surface. The roof of the magma chamber collapses as ...
Compositional variations and magma mixing in the 1991 eruptions of Hudson volcano, Chile
(Springer, 2009-12)
The August 1991 eruptions of Hudson volcano produced ∼2.7 km3 (dense rock equivalent, DRE) of basaltic to trachyandesitic pyroclastic deposits, making it one of the largest historical eruptions in South America. Phase 1 ...
Comparing magnetic and magmatic fabrics to constrain the magma flow record in La Gloria pluton, central Chile
(Elsevier, 2014)
This contribution illustrates a case study of a pluton (La Gloria pluton; LGP) where magnetic and magmatic fabrics are locally decoupled. We compare the magmatic fabric with the available magnetic fabric data to explore ...
Compositional zonation of the shallow La Gloria pluton (Central Chile) by late-stage extraction/redistribution of residual melts by channelization: Numerical modeling
(Elsevier, 2017)
The origin of highly evolved magmas (e.g. rhyolites) has been a long-standing controversy in earth sciences. They
are commonly thought to be generated in the upper crust by melt extraction from mush zones, but due to ...
Role of cryptic amphibole crystallization in magma differentiation at Hudson volcano, Southern Volcanic Zone, Chile
(Springer, 2010-02)
Hudson volcano (Chile) is the southern most stratovolcano of the Andean Southern Volcanic Zone and has produced some of the largest Holocene eruptions in South America. There have been at least 12 recorded Holocene explosive ...
Linking magmatic processes and magma chemistry during the post-glacial to recent explosive eruptions of Ubinas volcano (southern Peru)
(Elsevier, 2020-12-01)
Understanding the links between the magma differentiation processes, the magma plumbing system and the magma composition at arc volcanoes is of paramount importance for volcanic hazard assessment. In this work we focus on ...
Linking magmatic processes and magma chemistry during the post-glacial to recent explosive eruptions of Ubinas volcano (southern Peru)
(Elsevier B.V.NL, 2020-12)
Understanding the links between the magma differentiation processes, the magma plumbing system and the magma composition at arc volcanoes is of paramount importance for volcanic hazard assessment. In this work we focus on ...
Textural Relations of Lamprophyric Mafic Microgranular Enclaves and Petrological Implications for the Genesis of Potassic Syenitic Magmas: the example of Piquiri Syenite, southern BrazilTextural Relations of Lamprophyric Mafic Microgranular Enclaves and Petrological Implications for the Genesis of Potassic Syenitic Magmas: the example of Piquiri Syenite, southern Brazil
(Instituto de Geociências /Universidade Federal do Rio Grande do Sul, 2002)