Article
Geochemistry & Geophysics
Marta Lopez-Saavedra, Joan Marti, Jose Luis Rubio, Karim Kelfoun
Summary: Extreme geohazards like volcanic eruptions, earthquakes, landslides, and tsunamis can cause cascading effects with unpredictable risks, which are often overlooked in hazard assessment. Anticipating and preparing for such extreme events is crucial for maintaining safe and sustainable lifestyles. Volcanic islands, such as Tenerife in the Canary Archipelago, have experienced multiple occurrences of cascading extreme hazards in the past, highlighting the importance of understanding and mitigating the potential consequences.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geosciences, Multidisciplinary
Stefano Caruso, Martin J. Van Kranendonk, Raphael J. Baumgartner, Marco L. Fiorentini, Margaret A. Forster
Summary: Hydrothermal fluids played a key role in establishing the environmental conditions for ancient stromatolites to grow in the North Pole Chert. The study revealed highly acidic fluid conditions were likely promoted by input of magmatic volatile phases, which leached metals from basalt. Additionally, potassium and barium may have been sourced from an underlying magma chamber.
PRECAMBRIAN RESEARCH
(2021)
Article
Chemistry, Physical
Margarita Do Campo, Blanca Bauluz, Fernando Nieto
Summary: This study investigates the thermal post-depositional evolution of Ordovician slates and metavolcanic rocks in southern and northern Puna through X-ray diffraction and scanning electron microscopy. The results reveal that the rocks underwent prograde metamorphic evolution followed by hydrothermal alteration at different scales, confirming the widespread hydrothermal alteration in these areas.
APPLIED CLAY SCIENCE
(2022)
Article
Geochemistry & Geophysics
Eleazar Padron, Nemesio M. Perez, Pedro A. Hernandez, Gladys Melian, Maria Asensio-Ramos, Luca D'Auria, Fatima Rodriguez, Mar Alonso, Cecilia Amonte, German D. Padilla, Jose Barrancos, David Calvo, Beverley C. Coldwell, Matthew J. Pankhurst
Summary: A study conducted monthly at the summit crater of Teide volcano on Tenerife from 2013 to 2017 revealed significant changes in physicochemical and chemical parameters over time, indicating magmatic fluid injections in the hydrothermal system during June-August 2016. Signals such as increased H2S emissions, higher H2S/CO2 ratios, changes in carbon isotopic ratios, and convective mixing within magma reservoirs confirm the injection of fresh magma triggering fluid sources.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Ma Teresa Escobar Nakajima, Naoto Takahata, Kotaro Shirai, Takanori Kagoshima, Kentaro Tanaka, Hajime Obata, Yuji Sano
Summary: The study evaluates the hydrothermal venting inside the Wakamiko caldera in southern Japan following increased volcanic activity from Mount Sakurajima. Results show continued discharge of acidic fluids enriched in He-3 to the seafloor, indicating ongoing activity in the submerged caldera despite the uptick in nearby subaerial volcanic eruptions.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Shern R. Tee, Debra J. Searles
Summary: Constant potential method molecular dynamics simulation (CPM MD) accurately models atomistic electrode charges at the nanoscale. A theoretical extension of this approach is presented, where the total charge of each conductive electrode is controlled instead of their potential difference. The resulting thermodynamic ensemble is distinct but conjugate to the fixed potential difference ensemble. The success of recent studies using fixed total charges on electrodes is underpinned by this theoretical correspondence, with potential applications for speeding up equilibration and future simulations.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2023)
Article
Geochemistry & Geophysics
Stefano Caruso, Raphael J. Baumgartner, Martin J. Van Kranendonk, Marco L. Fiorentini, Anthony Dosseto
Summary: This study provides a new perspective on the evolution of the hydrothermal system of the Dresser caldera by analyzing the altered North Star Basalt. The B and Li concentrations and stable isotope ratios in different samples suggest inputs from different fluid reservoirs and emphasize the significant contribution of magmatic fluids in the hydrothermal system.
Article
Geosciences, Multidisciplinary
P. Davila-Harris, M. J. Branney, M. Storey, R. N. Taylor, J. T. Sliwinski
Summary: Recent evidence has shown that intraplate ocean island volcanoes can have prolonged explosive histories and exhibit hazardous behaviors similar to volcanoes in continental and plate-margin settings. Tenerife, the largest explosive ocean-island volcano on Earth, has a history of caldera-forming, plinian, and ignimbrite eruptions. The volcanic activity in southern Tenerife over the past 2 million years has included pumice-fall eruptions, extensive ignimbrites, and caldera collapse events. The eruption clusters in Tenerife occurred every 20-45 thousand years, separated by hiatuses of 240-260 thousand years.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2023)
Article
Geochemistry & Geophysics
Ruolin Liu, Junhong Zhao, Meifu Zhou, Han Qi
Summary: This study investigates the trace element compositions of chromite in the Jinchang ophiolite in southwest China and reveals that they can be altered during subsolidus re-equilibration and hydrothermal alteration. The study also demonstrates that the microstructures and trace elemental compositions of chromite can record the detailed serpentinization processes.
Article
Multidisciplinary Sciences
Chuanhui Huang, Xinglong Shang, Xinyuan Zhou, Zhe Zhang, Xing Huang, Yang Lu, Mingchao Wang, Markus Loeffler, Zhongquan Liao, Haoyuan Qi, Ute Kaiser, Dana Schwarz, Andreas Fery, Tie Wang, Stefan C. B. Mannsfeld, Guoqing Hu, Xinliang Feng, Renhao Dong
Summary: A hierarchical-structure-accelerated interfacial dynamic strategy is reported to improve interfacial gas transfer on conductive metal-organic framework films. Hierarchical c-MOF films with hollow structures are synthesized, which increase gas permeability and enhance the motion velocity of gas molecules towards the film surface.
NATURE COMMUNICATIONS
(2023)
Article
Geochemistry & Geophysics
Lukas Klose, Charlotte Kleint, Wolfgang Bach, Alexander Diehl, Frederike Wilckens, Christian Peters, Harald Strauss, Karsten Haase, Andrea Koschinsky
Summary: This study presents the geochemical characteristics of high-temperature hydrothermal fluids sampled from the caldera of Niuatahi volcano, indicating variations in fluid compositions at different vent sites due to fluid-rock interaction and magmatic input.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geochemistry & Geophysics
Julia A. Mikhailova, Galina O. Kalashnikova, Yakov A. Pakhomovsky, Ekaterina A. Selivanova, Alena A. Kompanchenko
Summary: This study simulated the formation process of secondary minerals of nepheline under different dissolution conditions through experiments, and verified the experimental results through observations of natural samples. The results showed that the alteration of nepheline in the Lovozero massif occurred under the influence of a high to medium salinity solution, resulting in the formation of natrolite and Al-O-H phases.
Article
Chemistry, Multidisciplinary
Myeonggeun Choe, Jin Young Koo, Ina Park, Hiroyoshi Ohtsu, Ji Hoon Shim, Hee Cheul Choi, Sarah S. Park
Summary: In this study, a conductive two-dimensional metal-organic framework (MOF) thin film was successfully synthesized using single-step all-vapor-phase chemical vapor deposition (CVD). The synthesized Cu-3(C6O6)(2) thin film showed high crystallinity with edge-on orientation. Cu-3(C6O6)(2) thin film-based microdevices were fabricated and exhibited an electrical conductivity of 92.95 S/cm. The synthesis of conductive MOF thin films by all-vapor-phase CVD offers a platform for fundamental studies on their physical properties and potential practical applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Geochemistry & Geophysics
Sierra N. Patterson, Kendra J. Lynn, Cecile Prigent, Jessica M. Warren
Summary: Alteration mineral assemblages in abyssal peridotites from the Gakkel Ridge were analyzed, revealing a range of alteration from essentially unaltered to completely serpentinized, with a moderate to highly altered average score. The extent of alteration was found to be independent of peridotite lithology and region. Serpentine was present in all samples, with carbonate veins in 27% of samples. The abundance of tremolite, chlorite, and talc was lower than in talctremolite-chlorite schists from other regions.
Article
Geochemistry & Geophysics
Michael J. Heap, Tobias S. Baumann, Marina Rosas-Carbajal, Jean-Christophe Komorowski, H. Albert Gilg, Marlene Villeneuve, Roberto Moretti, Patrick Baud, Lucille Carbillet, Claire Harnett, Thierry Reuschle
Summary: The study shows that hydrothermal alteration significantly increases volcano deformation and collapse volume, decreasing volcano stability and expediting volcano spreading, thus increasing the likelihood of mass wasting events and associated volcanic hazards. Monitoring hydrothermal alteration and its evolution at active volcanoes worldwide is therefore crucial.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Nicolas P. Coppo, Pierre-Andre Schnegg, Pierik Falco, Roberto Costa
EARTH AND PLANETARY SCIENCE LETTERS
(2009)
Article
Geosciences, Multidisciplinary
Lydie-Sarah Gailler, Vincent Bouchot, Guillaume Martelet, Isabelle Thinon, Nicolas Coppo, Jean-Michel Baltassat, Bernard Bourgeois
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2014)
Article
Geosciences, Multidisciplinary
M. Darnet, P. Wawrzyniak, N. Coppo, S. Nielsson, E. Schill, G. O. Fridleifsson
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2020)
Article
Geosciences, Multidisciplinary
Nicolas Coppo, Pierre-Andre Schnegg, Pierik Falco, Roberto Costa, Martin Burkhard
SWISS JOURNAL OF GEOSCIENCES
(2008)
Article
Energy & Fuels
F. Bretaudeau, M. Darnet, J. Porte, C. Lerouge, S. Neeb, J. F. Girard, J. M. Baltassat, N. Coppo, Y. Lucas, C. Dezayes
Summary: This paper presents a study on the physical properties of a transition zone in the Ringelbach area, which provides insights into the assessment of geothermal potential. The results show that the altered porous and potentially permeable granite in deep geothermal exploration exhibits distinct electrical conductivity and seismic measurements, which can be detected at different scales and depths.
Article
Geology
N. Coppo, P. A. Schnegg, P. Falco, R. Costa
Article
Geosciences, Multidisciplinary
Joachim Gottsmann, Roberto Carniel, Nicolas Coppo, Luke Wooller, Stefanie Hautmann, Hazel Rymer
GEOPHYSICAL RESEARCH LETTERS
(2007)