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View article: Comment to Shreve and Delgado (2023)—“ <i>Trapdoor Fault Activation</i> : <i>A Step Toward Caldera Collapse at Sierra Negra</i> , <i>Galapagos</i> , <i>Ecuador</i> ”
Comment to Shreve and Delgado (2023)—“ <i>Trapdoor Fault Activation</i> : <i>A Step Toward Caldera Collapse at Sierra Negra</i> , <i>Galapagos</i> , <i>Ecuador</i> ” Open
In their article entitled “ Trapdoor Fault Activation : A Step Toward Caldera Collapse at Sierra Negra , Galapagos , Ecuador ” Shreve and Delgado (2023, https://doi.org/10.1029/2023jb026437 ) examine co‐eruptive deformation during the 2018…
View article: Ru and W isotope systematics in ocean island basalts reveals core leakage
Ru and W isotope systematics in ocean island basalts reveals core leakage Open
The isotopic composition of lavas associated with mantle plumes has previously been interpreted in the light of core–mantle interaction, suggesting that mantle plumes may transport core material to Earth’s surface 1–5 . However, a definiti…
View article: Taking the Temperature of Ocean Islands: A Petrological Approach
Taking the Temperature of Ocean Islands: A Petrological Approach Open
Estimating mantle temperature is essential for understanding mantle convection and circulation. One route to constraining mantle temperature is via petrological observations, from combining estimates of magmatic temperature with models of …
View article: The evolution of the Galápagos mantle plume
The evolution of the Galápagos mantle plume Open
The lavas associated with mantle plumes may sample domains throughout Earth’s mantle and probe its dynamics. However, plume studies are often only able to take snapshots in time, usually of the most recent plume activity, leaving the chemi…
View article: Forecasting mechanical failure and the 26 June 2018 eruption of Sierra Negra Volcano, Galápagos, Ecuador
Forecasting mechanical failure and the 26 June 2018 eruption of Sierra Negra Volcano, Galápagos, Ecuador Open
Using recent advancements in high-performance computing data assimilation to combine satellite InSAR data with numerical models, the prolonged unrest of the Sierra Negra volcano in the Galápagos was tracked to provide a fortuitous, but suc…
View article: Hekla Revisited: Fractionation of a Magma Body at Historical Timescales
Hekla Revisited: Fractionation of a Magma Body at Historical Timescales Open
Hekla is an elongate volcano that lies at the intersection of the South Iceland Seismic Zone and the Eastern Volcanic Zone. We report major and trace element, oxygen isotopic, and H2O analyses on rocks, glass, melt inclusions, and minerals…
View article: Linking thermomechanical models with geodetic observations to evaluate the 2018 eruption of Sierra Negra Volcano, Gal&#225;pagos
Linking thermomechanical models with geodetic observations to evaluate the 2018 eruption of Sierra Negra Volcano, Galápagos Open
<p>Ensemble based data assimilation approaches, such as the Ensemble Kalman Filter (EnKF), have been widely and successfully implemented to combine observations with dynamic models to investigate the evolution of a system&#8217;s…
View article: Large hydromagmatic eruption related to Fernandina Volcano’s 1968 caldera collapse—Deposits, landforms, and ecosystem recovery
Large hydromagmatic eruption related to Fernandina Volcano’s 1968 caldera collapse—Deposits, landforms, and ecosystem recovery Open
The hydromagmatic eruption that immediately preceded the 1968 caldera collapse of Fernandina Volcano, Galápagos, which had a volcano explosivity index (VEI) of 4, offers a case study of powerful eruptions where basaltic magma interacts wit…
View article: Magma chambers versus mush zones: constraining the architecture of sub-volcanic plumbing systems from microstructural analysis of crystalline enclaves
Magma chambers versus mush zones: constraining the architecture of sub-volcanic plumbing systems from microstructural analysis of crystalline enclaves Open
There are clear microstructural differences between mafic plutonic rocks that formed in a dynamic liquid-rich environment, in which crystals can be moved and re-arranged by magmatic currents, and those in which crystal nucleation and growt…
View article: Stress Triggering of the 2005 Eruption of Sierra Negra Volcano, Galápagos
Stress Triggering of the 2005 Eruption of Sierra Negra Volcano, Galápagos Open
Extensive vertical deformation (>4.5 m) observed at Sierra Negra volcano Galápagos, Ecuador, between 1992 and the 2005 eruption led scientists to hypothesize that repeated faulting events relieved magma chamber overpressure and prevented e…
View article: Integrated Petrological and Geophysical Constraints on Magma System Architecture in the Western Galápagos Archipelago: Insights From Wolf Volcano
Integrated Petrological and Geophysical Constraints on Magma System Architecture in the Western Galápagos Archipelago: Insights From Wolf Volcano Open
The 2015 eruption of Wolf volcano was one of the largest eruptions in the Galápagos Islands since the onset of routine satellite‐based volcano monitoring. It therefore provides an excellent opportunity to combine geophysical and petrologic…
View article: The Evolution of Galápagos Volcanoes: An Alternative Perspective
The Evolution of Galápagos Volcanoes: An Alternative Perspective Open
The older eastern Galápagos are different in almost every way from the historically active western Galápagos volcanoes. Geochemical, geologic, and geophysical data support the hypothesis that the differences are not evolutionary, but rathe…
View article: Submarine Basaltic Glasses from the Galapagos Archipelago: Determining the Volatile Budget of the Mantle Plume
Submarine Basaltic Glasses from the Galapagos Archipelago: Determining the Volatile Budget of the Mantle Plume Open
We report new major, trace and volatile element contents (H_2O, CO_2, F, S, Cl), and new Sr, Nd, Pb and He isotopes on submarine glasses from the Galapagos Archipelago from several dredging expeditions. Four groups are distinguishable on t…
View article: Field-trip guide to a volcanic transect of the Pacific Northwest
Field-trip guide to a volcanic transect of the Pacific Northwest Open
First posted August 1, 2017 For additional information, contact: Volcano Science Center - Menlo ParkU.S. Geological Survey345 Middlefield Road, MS 910Menlo Park, CA 94025 The Pacific Northwest region of the United States provides world-cla…
View article: Oceanic archipelagos: a perspective on the geodynamics and biogeography of the World’s smallest biotic provinces
Oceanic archipelagos: a perspective on the geodynamics and biogeography of the World’s smallest biotic provinces Open
Since the contributions of Charles Darwin and Alfred Russel Wallace, oceanic archipelagos have played a central role in the development of biogeography. However, despite the critical influence of oceanic islands on ecological and evolution…
View article: Oceanic archipelagos: a perspective on the geodynamics and biogeography of the World’s smallest biotic provinces
Oceanic archipelagos: a perspective on the geodynamics and biogeography of the World’s smallest biotic provinces Open
Since the contributions of Charles Darwin and Alfred Russel Wallace, oceanic archipelagos have played a central role in the development of biogeography. However, despite the critical influence of oceanic islands on ecological and evolution…