Article
Geochemistry & Geophysics
Alysha D. Armstrong, Zachary Claerhout, Ben Baker, Keith D. Koper
Summary: Traditional seismic phase pickers have limitations in detecting overlapping earthquake waveforms, resulting in incomplete seismic catalogs. In this study, a supervised deep-learning (DL) picker specifically trained on Yellowstone seismicity was developed, which showed improved performance in handling overlapping waveforms. Transfer learning and data augmentation techniques were utilized to enhance the models and model uncertainty was quantified for better accuracy. The method achieved high detection rates and produced meaningful credible intervals, demonstrating its effectiveness in seismic analysis.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2023)
Article
Geosciences, Multidisciplinary
Andreas Kluegel, Elmar Albers, Thor H. Hansteen
Summary: The occurrence of mantle-derived peridotite xenoliths in phonolitic melts is a rare phenomenon. A unique tephriphonolite lava from Cumbre Vieja volcano in La Palma provides evidence that xenoliths are transported into evolving phonolite melts by mafic magmas. Petrological investigations show that the tephriphonolite magma was stored in the lower crust at high temperatures and oxidized conditions. The peridotite xenoliths had contact with alkaline melts for several decades to centuries before being entrained in the final ascent of the lava.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geochemistry & Geophysics
Sarah L. Smithies, Lydia J. Harmon, Sydney M. Allen, Darren M. Gravley, Guilherme A. R. Gualda
Summary: The study investigates the extraction and storage pressures of eruptible magma bodies in the Taupo Volcanic Zone, New Zealand. Results show that the volcano eruptions were fed by multiple, compositionally distinct, mush and eruptible magma bodies. The study also reveals the spatial and vertical maturity of large silicic magma systems over a short geological timeframe.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Raymond A. F. Cas, John A. Wolff, Joan Marti, Paul H. Olin, Campbell J. Edgar, Adrian Pittari, Jack M. Simmons
Summary: Tenerife is an active oceanic island volcano in the Canary Islands, known for its complex and evolved volcanic system. It has undergone different types of eruptions, including basaltic and phonolitic eruptions, and has formed multiple calderas. Tenerife has also experienced the growth of two stratovolcanoes and continues to have volcanic activity on its flanks.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Gong-Jian Tang, Derek A. Wyman, Qiang Wang, Ji-Yuan Yin, Wei Dan
Summary: Observations on the Taxkorgan intrusive complex (TIC) of the Central Pamir reveal that long-distance lateral magma propagation reflects the complex interaction between regional tectonics and crustal uplift. The movement and age difference of syenite samples indicate a lateral magma propagation pattern from south to north, caused by crustal rigidity differences and a pressure gradient induced by the topography. These findings highlight the importance of lateral magma propagation in plateau expansion and the restriction of thickness and elevation of the Pamir Plateau.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geochemistry & Geophysics
Jean Baptiste Tary, Richard W. Hobbs, Christine Peirce, Catalina Lesmes Lesmes, Matthew J. Funnell
Summary: Seismicity in the mid-ocean ridge system in the Panama Basin is concentrated along transform offsets, with little activity in intraplate areas. The seismic activity along the CRR appears in clusters, with deeper events possibly triggering shallower seismicity. Intraplate seismicity may be associated with the reactivation of east-west trending normal faults.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Damian Walwer, Michael Ghil, Eric Calais
Summary: By studying space geodetic time series and using M-SSA methodology, it is possible to extract qualitative dynamics information from deformation data of volcanic systems, aiding in the understanding of pressure build-up within magma bodies and providing guidelines for physics-based models of episodic inflation cycles.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Robert R. Loucks
Summary: The interactions between continental crust and igneous rocks involve complex dynamic processes influenced by various geological environments and tectonic stresses, resulting in significant effects on the composition of volcanic rocks and formation of the crust.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Tom Kettlety, J. Michael Kendall, Diana C. Roman
Summary: Estimating the volume of intruded magma is crucial for predicting volcanic activity. Geodetic modeling is a useful tool for providing these estimates, but it has limitations in submarine and highly vegetated areas. This study explores the use of seismic moment release estimates as a complementary approach. By comparing the moment-volume scaling of several volcanic earthquake sequences and injection-induced seismicity, the researchers find a notable similarity in scaling within the volcanic sequences. This suggests a distinctive geological condition for volcanoes compared to induced seismicity settings, and the possibility of estimating intruded volume without geodetic information.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Muriel Gerbault, Fabrice J. Fontaine, Aline Peltier, Jean-Luc Got, Riad Hassani, Valerie Ferrazzini, Lydie Gailler, Zacharie Duputel
Summary: This study models the elasto-plastic behavior of the Piton de la Fournaise volcanic edifice and suggests that seismic activity and gravity-induced flank instability may be linked to magma injections. The study also indicates that the plastic behavior of the volcanic edifice is influenced by continuous magma supply from a reservoir, rather than pre-existing weak zones.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2022)
Letter
Geosciences, Multidisciplinary
F. Liu, J. R. Elliott, S. K. Ebmeier, T. J. Craig, A. Hooper, C. Novoa Lizama, F. Delgado
Summary: We have detected the first signs of unrest at Socompa volcano using Interferometric Synthetic Aperture Radar measurements. The volcano has been steadily uplifting since November 2019, with a rate of 17.5 mm/year, indicating a pressure increase in an ellipsoidal source region. This uplift suggests the initiation of unrest at Socompa after a long period of stability.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
S. Cesca, M. Metz, P. Bueyuekakpinar, T. Dahm
Summary: A series of seismic activities occurred in the northern section of the Mid-Atlantic Ridge (latitude 53.3°-54.3°) from 26 September to 10 December 2022. Through the analysis of regional, teleseismic, and array data, we were able to locate 61 hypocenters and determine 77 moment tensors. The cumulative moment released during the 2022 swarm is equivalent to Mw 6.3. The majority of earthquakes were shallow with a depth of 7±3 km, and they mainly occurred along the ridge axis with normal faulting mechanisms. However, some of the larger and more recent earthquakes exhibited unusual thrust mechanisms and occurred as far as 25 km from the ridge. This swarm is believed to be caused by a shallow magmatic intrusion, starting with a vertical dike propagating approximately 60 km along the ridge axis, followed by shallow normal faulting and eventually triggering thrust earthquakes off the ridge due to the buildup of compressive stress. This unrest provides a rare example of a highly energetic, magmatic-driven swarm episode at a mid-ocean ridge.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Ming-Dao Sun, Yi-Gang Xu, Esteban Gazel, Jie Li, Wan-Feng Zhang, Le Zhang, Peng-Li He, Yuan-Yuan Xiao, Fred Jourdan, Simon A. Wilde
Summary: This study reports new geochronological and geochemical data of two adjacent primitive intraplate volcanoes in Northeast China. The results suggest that these volcanoes provide a rare opportunity to investigate mantle components due to minimal crustal contamination. The volcanics from the Lesser Wangqing River volcano show enrichment of light rare earth elements and radiogenic isotopes, while the volcanics from the Great Wangqing River volcano exhibit steeper REE patterns and more radiogenic isotopes. Based on olivine chemistry, it is proposed that the Lesser Wangqing River volcano sampled recycled lower oceanic crust components, while the Great Wangqing River volcano sampled recycled upper oceanic crust components. Both components have characteristics similar to an enriched mantle I (EM1) source, suggesting that EM1 components can be formed by the recycling of oceanic crust with limited sediment.
Article
Geochemistry & Geophysics
Colin R. M. Jackson, Curtis D. Williams, Zhixue Du, Neil R. Bennett, Sujoy Mukhopadhyay, Yingwei Fei
Summary: By conducting MA and LH-DAC experiments, high-pressure phases were synthesized to study the distribution of argon in magma ocean environments. The results show a wide range of argon concentrations in minerals, with relatively high solubility in ultramafic liquid and low solubility in minerals, suggesting argon incompatibility during magma ocean crystallization. This implies that a basal magma ocean would be enriched in noble gases relative to other regions of the mantle.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geochemistry & Geophysics
Josef Dufek, Kathy Cashman, Emilie Hooft, Paul Bedrosian
Summary: Volcanic activity is influenced by crustal pathways and reservoirs, and the Cascades provide a natural laboratory for studying this influence. The interaction between magma and the crust of the overriding North American plate has resulted in diverse storage conditions.
Article
Geochemistry & Geophysics
Carmen Lopez, Maria A. Benito-Saz, Joan Marti, Carmen del-Fresno, Laura Garcia-Canada, Helena Albert, Hector Lamolda
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2017)
Article
Geosciences, Multidisciplinary
Maria A. Benito-Saz, Michelle M. Parks, Freysteinn Sigmundsson, Andrew Hooper, Laura Garcia-Canada
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2017)
Article
Engineering, Geological
Jan Blahut, Ivo Baron, Lubos Sokol, Stavros Meletlidis, Jan Klimes, Matt Rowberry, Rostislav Melichar, Laura Garcia-Canada, Xavi Marti
Article
Geochemistry & Geophysics
I. Dominguez Cerdena, L. Garcia-Canada, M. A. Benito-Saz, C. del Fresno, H. Lamolda, J. Pereda de Pablo, C. Sanchez Sanz
Article
Multidisciplinary Sciences
Patrick Beaudry, Marc-Antoine Longpre, Rita Economos, Boswell A. Wing, Thi Hao Bui, John Stix
NATURE COMMUNICATIONS
(2018)
Article
Geochemistry & Geophysics
Z. Taracsak, M. E. Hartley, R. Burgess, M. Edmonds, F. Iddon, M-A Longpre
GEOCHIMICA ET COSMOCHIMICA ACTA
(2019)
Article
Geochemistry & Geophysics
Yves Moussallam, Marc-Antoine Longpre, Catherine McCammon, Alejandra Gomez-Ulla, Estelle F. Rose-Koga, Bruno Scaillet, Nial Peters, Emanuela Gennaro, Raphael Paris, Clive Oppenheimer
EARTH AND PLANETARY SCIENCE LETTERS
(2019)
Article
Geochemistry & Geophysics
Z. Taracsak, D. A. Neave, P. Beaudry, J. Gunnarsson-Robin, R. Burgess, M. Edmonds, S. A. Halldorsson, M-A Longpre, S. Ono, E. Ranta, A. Stefansson, A. Turchyn, M. E. Hartley
Summary: This study investigates matrix effects that arise during sulfur isotope analysis of glasses by SIMS, using over 600 sulfur isotope analyses of nine different glasses. The research reveals a nonlinear correlation between glass sulfur content and IMF, and demonstrates that models incorporating multiple elements can accurately predict instrumental mass fractionation. This highlights the importance of using well-characterized standards with a wide compositional range to calibrate SIMS instruments for sulfur isotope analyses of unknown silicate glasses.
Editorial Material
Geosciences, Multidisciplinary
Teresa Ubide, David A. Neave, Maurizio Petrelli, Marc-Antoine Longpre
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geochemistry & Geophysics
Lisa Hlinka, Marc-Antoine Longpre, Wendy Perez, Steffen Kutterolf, Brian Monteleone
Summary: The highly explosive Plinian eruptions of basaltic magma at Masaya volcano are enigmatic due to low melt viscosities. However, pre-eruptive volatile contents show systematic differences between lava lake and Plinian samples, suggesting that eruption style may be related to degassing processes and volatile contents. The volcano's magmatic system is compositionally buffered and undergoes extensive pre-eruptive degassing at low pressure, implying that the eruption style is controlled by a top-down modulation of magma supply.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geochemistry & Geophysics
Zoltan Taracsak, Marc-Antoine Longpre, Romain Tartese, Ray Burgess, Marie Edmonds, Margaret E. Hartley
Summary: Recent studies have shown that ocean island basalts (OIBs) contain high levels of carbon, sulfur, and halogens. In El Hierro, Western Canary Islands, magmas with exceptionally high CO2 and sulfur contents have been erupting for centuries. By estimating the oxygen fugacity (fO(2)) and magmatic temperature for El Hierro, along with global mantle potential temperature data, researchers were able to assess the redox and temperature conditions during the early stages of volatile-rich OIB melt evolution. The results indicate highly oxidized magmas and provide insights into the mantle source beneath the Canary Islands.
JOURNAL OF PETROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Marc-Antoine Longpre, Alicia Felpeto
Summary: Despite long repose periods, the Canary Islands' volcanoes have shown a pattern of erupting every few decades, with eruptions typically lasting from days to months. Initial eruptive phases usually involve the opening of multiple vents along dike-fed fissures, followed by effusive behavior. The historical eruptive rates in the archipelago are generally low, averaging between 1.0-2.1 x 10(6) m(3)/year.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2021)
Editorial Material
Multidisciplinary Sciences
Marc-Antoine Longpre
Article
Geosciences, Multidisciplinary
Benjamin A. Black, Michael Manga, Lujendra Ojha, Marc-Antoine Longpre, Suniti Karunatillake, Lisa Hlinka
Summary: Water inventories in Martian magmas are poorly understood, but using thorium as a proxy, this study finds that the water content in magmas during the Hesperian and Amazonian epochs is lower than previously estimated and consistent with Mars' present-day water inventory.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Multidisciplinary Sciences
Carmen del Fresno, Simone Cesca, Andreas Kluegel, Itahiza Dominguez Cerdena, Eduardo A. Diaz-Suarez, Torsten Dahm, Laura Garcia-Canada, Stavros Meletlidis, Claus Milkereit, Carla Valenzuela-Malebran, Ruben Lopez-Diaz, Carmen Lopez
Summary: The 2021 volcanic eruption at La Palma, Canary Islands, was the largest in the island's history. A study using seismological methods found a long preparatory phase with the destabilization of an intermediate reservoir and a co-eruptive phase with seismic activity controlled by the drainage and interaction of two reservoirs.
NATURE COMMUNICATIONS
(2023)
Article
Geochemistry & Geophysics
Lingyu Zhang, Kristoffer Szilas
Summary: This study presents new petrological and geochemical data for the Narssaq Ultramafic Body (NUB) in the Itsaq Gneiss Complex of SW Greenland. The results indicate that the ultramafic rocks of NUB are not mantle residues, but instead represent crustal cumulates derived from high-Mg magmas.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Rong Xu, Sarah Lambart, Oliver Nebel, Ming Li, Zhongjie Bai, Junbo Zhang, Ganglan Zhang, Jianfeng Gao, Hong Zhong, Yongsheng Liu
Summary: This study investigated the iron isotope compositions of Cenozoic basalts in Southeast China, finding significant variations related to different types of basalts and their respective sources.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
C. J. Ebinger, Miriam C. Reiss, Ian Bastow, Mary M. Karanja
Summary: The East African rift system is formed above mantle upwellings and the formation of rifts is related to lithospheric thinning and magmatic activity. The amount of splitting varies spatially and the fast axes are predominantly parallel to the orientation of the rifts. Thick lithospheric modules have less splitting and different orientations, which may indicate mantle plume flow. Splitting rotates and increases in strength as it enters the rift zones, suggesting that the anisotropy is mainly present at shallow depths.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Correction
Geochemistry & Geophysics
Ekaterina Rojas-Kolomiets, Owen Jensen, Michael Bizimis, Gene Yogodzinski, Lukas Ackerman
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Robert W. Nicklas, Igor S. Puchtel, Ethan F. Baxter
Summary: Oxygen fugacity is a fundamental parameter for understanding redox processes in igneous systems. This study compares the Fe-XANES oxybarometry method with the V-in-olivine method for evaluating fO(2) in MORB lavas. The results show that the V-in-olivine method is not applicable to samples with low MgO content, and that the majority of Archean komatiite sources have lower fO(2) than modern MORB.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Chunfei Chen, Stephen F. Foley, Sebastian Tappe, Huange Ren, Lanping Feng, Yongsheng Liu
Summary: The volatile components CO2 and H2O play a major role in mantle melting and heterogeneity. In this study, Ca isotopes were used to trace the lithological heterogeneity in alkaline magmatic rocks. The results revealed the presence of K-richterite and carbonate components as the source of alkaline magmas with low delta 44/40Ca values. These findings highlight the importance of Ca isotopes as a robust tracer of lithological variation caused by volatiles in the Earth's upper mantle.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Timothee Jautzy, Gilles Rixhon, Regis Braucher, Romain Delunel, Pierre G. Valla, Laurent Schmitt, Aster Team
Summary: Although the current approach to estimate catchment-wide denudation rates using only 10Be concentrations has made significant progress in geomorphology, this study argues for the inclusion of 26Al measurements and testing of steady-state assumptions in slow eroding, formerly glaciated landscapes. The study conducted measurements of both 10Be and 26Al in stream sediments from the Vosges Massif in France and found that elevation, slope, channel steepness, and precipitation were the primary factors controlling denudation rates. The study also revealed a significant relationship between the extent of past glaciation and the cosmogenic (un-)steadiness in the stream sediments.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Erik van der Wiel, Douwe J. J. van Hinsbergen, Cedric Thieulot, Wim Spakman
Summary: Numerical models of Earth's mantle dynamics can predict the vigour and mixing of mantle flow, and the average slab sinking rates are an unexplored parameter that can provide intrinsic information on these characteristics. Through numerical experiments, it has been found that slab sinking rates are strongly correlated with mantle convection and mixing, and may explain geochemical observations from hotspot volcanoes.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)