Article
Geochemistry & Geophysics
Delphine Bosch, Fabienne Zami, Melody Philippon, Jean-Frederic Lebrun, Philippe Munch, Jean-Jacques Cornee, Lucie Legendre, Alexandre Lemoyne
Summary: This study presents geochemical data from St. Barthelemy Island, showing its similarities with the active branch of the Lesser Antilles arc. The island also shares similarities with St. Martin Island in terms of geodynamic evolution.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geochemistry & Geophysics
Yan Hu, Fang-Zhen Teng, Catherine Chauvel
Summary: This study used stable potassium isotopes to track the crustal signatures in lavas from Martinique Island in the Lesser Antilles arc. The results show that the variations in K isotopes in these lavas are related to chemical parameters and radiogenic isotope ratios, indicating modification of mantle sources by input of subducted sediments. Most lavas have <1% to 5% of subducted sediments added to their mantle sources, with some samples showing divergence likely caused by the addition of K-bearing fluids from slab dehydration.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geosciences, Multidisciplinary
Zachary D. Atlas, Aurelie Germa, Brenna Boss, Osvaldo Meireles, Ami Ward, Jeffrey G. Ryan
Summary: Understanding the relationship between different components involved in the recycling of subducted sediment at arc volcanic systems is important. This study examines trace element variability along the Lesser Antilles Island Arc and suggests that sediment inputs via fluid transfer to the mantle wedge are necessary to explain certain trace element characteristics. The study also reveals variations in sediment composition along the arc and emphasizes the importance of considering localized variations in sediment contribution.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geochemistry & Geophysics
Elena Melekhova, Michal Camejo-Harry, Jon Blundy, Simon R. Wallis, Catherine Annen, Barbara E. Kunz, Frances E. Jenner, Matthew Thirlwall
Summary: A study of xenoliths from Petit St. Vincent reveals the construction of arc crust beneath the island and its compatibility with the regional arc magma flux. The presence of high-An plagioclase in the xenoliths suggests the importance of water-fluxed melting in deep arc crust sections worldwide.
JOURNAL OF PETROLOGY
(2022)
Article
Geosciences, Multidisciplinary
C. Breitkreuz, A. K. Schmitt, A. Repstock, J. Krause, B. Schulz, F. Bergmann, J. Bischoff, A. Le Friant, O. Ishizuka
Summary: The Pleistocene volcaniclastic turbidites from the Grenada basin west of Martinique have been investigated to understand sediment provenance, deposition rates, and magma origins. The study revealed a significant contribution from Dominica for the volcaniclastic turbidites, with evidence of both upper and lower crustal magma reservoirs influencing the composition. The results provide insights into the volcanic and magmatic evolution of the central Lesser Antilles islands.
Article
Geosciences, Multidisciplinary
G. F. Cooper, E. C. Inglis
Summary: The study reveals that lavas produced at subduction zones represent both source heterogeneity and an array of crustal processes, while plutonic xenoliths provide a complementary record of the deeper roots of the magmatic plumbing system and true chemical diversity of arc crust. Iron isotopic record demonstrates that magmatic processes within the sub-arc crust have a greater impact than sub-arc mantle inputs, and a light iron source is not necessary for producing the light iron isotopic compositions in volcanic arc lavas.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
J. R. Brown, G. F. Cooper, G. M. Nowell, C. G. Macpherson, I. Neill, J. Prytulak
Summary: The study of Martinique volcanic arc lavas reveals evidence of sediment assimilation in shallow crustal levels, leading to a wider range of Sr isotopic compositions in the magmas. This highlights the importance of constraining crustal contributions before using lava geochemistry to study sediment and volatile recycling at subduction zones and assessing potential heterogeneity of arc mantle sources.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Environmental Sciences
Charlotte R. Dromard, Jean-Pierre Allenou, Nathalie Tapie, Helene Budzinski, Nicolas Cimmaterra, Pauline De Rock, Salim Arkam, Sebastien Cordonnier, Jean-Louis Gonzalez, Yolande Bouchon-Navaro, Claude Bouchon, Emmanuel Thouard
Summary: This study conducted in Galion Bay, Martinique, aimed to highlight the variations of chlordecone contamination in seawater and marine organisms over different seasons. The results showed significant temporal variations in seawater contamination, with different levels of pollution observed among the marine habitats. Isotope analyses indicated bioamplification along marine food webs at each season and each station.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Marianne Richter, Oliver Nebel, Martin Schwindinger, Yona Nebel-Jacobsen, Henry J. B. Dick
Summary: Two-thirds of the Earth is covered by mid-ocean ridge basalts, which show chemical diversity mainly attributed to igneous differentiation and source heterogeneity. This study reveals that basalts from the ultraslow spreading Gakkel Ridge in the Arctic Ocean are driven to heavier iron isotope compositions through partial melting processes, contrasting with fast spreading ridges.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
Long Li, Yuhan Qi, Yunzhe Chen, Kan Li, Fang Huang, Pierre Cartigny
Summary: The study examined the fixed nitrogen component in arc lavas from Kick'em Jenny (KEJ) to shed light on two longstanding controversies in the recycling of subducting slab material. The results indicate that the nitrogen isotopic signature in the lavas is best explained by a mixing between the mantle and two distinct endmembers, suggesting sediment recycling into the mantle source. Additionally, the modeling results show that the arc crust is not a major repository of subducted nitrogen in the Lesser Antilles.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Marc Peruzzetto, Yoann Legendre, Aude Nachbaur, Thomas J. B. Dewez, Yannick Thiery, Clara Levy, Benoit Vittecoq
Summary: Gravitational instabilities pose significant threats to populations and infrastructure. This study focuses on estimating the geometry and volume of unstable masses in a volcanic cliff using remote observations. The analysis of the Samperre cliff in Martinique suggests a potential link between destabilizations and a paleo-valley filled with pyroclastic materials. The estimated volume of future destabilizations could be between 3.5x10(6) and 8.3x10(6) m(3).
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
(2022)
Article
Geochemistry & Geophysics
J. Weil-Accardo, N. Feuillet, B. Philibosian, A. Guihou, E. Jacques, G. Cabioch, A. Anglade, A. -S. Meriaux, P. Deschamps
Summary: In this study, the long-term topography of Barbuda Island was investigated through the dating of corals on marine terraces. The results suggest that the terraces correspond to the Last Interglacial period and estimate a paleo relative sea level of 7 meters above the current sea level. The asymmetry of Barbuda Island and the difference in shoreline elevation between Barbuda and Antigua imply regional tectonic processes.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geology
M. Biguenet, P. Sabatier, E. Chaumillon, C. Chague, F. Arnaud, F. Jorissen, T. Coulombier, E. Geba, L. Cordrie, P. Vacher, A. L. Develle, E. Chalmin, F. Soufi, N. Feuillet
Summary: The study identified sandy layers in the sedimentary environment of the Lesser Antilles which could be tsunami deposits, as well as recorded historical hurricane events. The long-term record shows similarities with that of the Bahamas, indicating an antiphase relationship between periods of intense hurricane activity and the northeastern US coast. This regional comparison may provide evidence for a latitudinal forcing of hurricane tracks through time in relation to climate fluctuations.
SEDIMENTARY GEOLOGY
(2021)
Article
Ecology
Emily Veltjen, Ichiro Tamaki, Pieter Asselman, Paul Goetghebeur, Marie-Stephanie Samain, Isabel Larridon
Summary: This study examines the biogeographical patterns in the Lesser Antilles using a slowly evolving species. The results show that each island should be treated as distinct Management Units for conservation and suggests a re-evaluation of the species limits. Inbreeding poses a threat to island populations, with the populations in Saint Vincent and Dominica requiring priority conservation efforts.
JOURNAL OF BIOGEOGRAPHY
(2023)
Article
Multidisciplinary Sciences
Yuxiang Zhang, Esteban Gazel, Glenn A. Gaetani, Frieder Klein
Summary: Recent geochemical evidence confirms the oxidized nature of arc magmas, possibly influenced by deep subduction-related fluids derived from dehydration of serpentinite +/- altered oceanic crust using B isotopes and B/Nb as fluid proxies. The redox state of the subarc mantle is not globally homogeneous, with arc magmas associated with flat, warm subduction showing lower overall oxidation compared to those generated in steep, cold subduction zones. The incorporation of serpentinite (+/- altered oceanic crust) fluid component into the subarc mantle is controlled by the subduction system's thermodynamic conditions and geometry.
Article
Geochemistry & Geophysics
Richard M. Gaschnig, Christopher T. Reinhard, Noah J. Planavsky, Xiangli Wang, Dan Asael, Catherine Chauvel
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2017)
Article
Geochemistry & Geophysics
Sidonie Revillon, Herve Guillou, Rene C. Maury, Catherine Chauvel, Daniel Aslanian, Ewan Pelleter, Vincent Scao, Benoit Loubrieu, Martin Patriat
Article
Multidisciplinary Sciences
Jack Longman, Daniel Veres, Vasile Ersek, Donald L. Phillips, Catherine Chauvel, Calin G. Tamas
SCIENTIFIC REPORTS
(2018)
Article
Geochemistry & Geophysics
Valentina G. Batanova, Jay M. Thompson, Leonid V. Danyushevsky, Maxim V. Portnyagin, Dieter Garbe-Schoenberg, Erik Hauri, Jun-Ichi Kimura, Qing Chang, Ryoko Senda, Karsten Goemann, Catherine Chauvel, Sylvain Campillo, Dmitri A. Ionov, Alexander V. Sobolev
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2019)
Article
Engineering, Environmental
Kate E. Smith, Dominique Weis, Catherine Chauvel, Sibyle Moulin
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2020)
Article
Multidisciplinary Sciences
Yan Hu, Fang-Zhen Teng, Terry Plank, Catherine Chauvel
Article
Geochemistry & Geophysics
Yan Hu, Fang-Zhen Teng, Catherine Chauvel
Summary: This study used stable potassium isotopes to track the crustal signatures in lavas from Martinique Island in the Lesser Antilles arc. The results show that the variations in K isotopes in these lavas are related to chemical parameters and radiogenic isotope ratios, indicating modification of mantle sources by input of subducted sediments. Most lavas have <1% to 5% of subducted sediments added to their mantle sources, with some samples showing divergence likely caused by the addition of K-bearing fluids from slab dehydration.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
E. K. A. Brett, J. Prytulak, M. Rehkamper, S. J. Hammond, C. Chauvel, A. Stracke, M. Willbold
Summary: The study reveals significant variations in thallium isotopic compositions in ocean island basalts, with widespread depletion in thallium concentration. The Tl concentration in OIB mantle sources may be influenced by subduction processes, leading to discrepancies between thallium isotopic compositions and radiogenic isotopic compositions.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
Yan Hu, Fang-Zhen Teng, Rosalind T. Helz, Catherine Chauvel
Summary: Stable potassium isotopes are being used as tracers for terrestrial recycling and planetary processes. This study investigated K isotope fractionation during the differentiation and solidification of the Kilauea Iki lava lake in Hawaii, and found no analytically resolvable fractionation, indicating a lack of K-rich minerals in the crystallizing assemblage. The results suggest an average delta K-41 of -0.42 +/- 0.08 parts per thousand for the pristine mantle and of -0.42 +/- 0.07 parts per thousand for the BSE.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Shengyu Tian, Frederic Moynier, Edward C. Inglis, Roberta L. Rudnick, Fang Huang, Catherine Chauvel, John B. Creech, Richard M. Gaschnig, Zaicong Wang, Jing-Liang Guo
Summary: By analyzing the stable isotopic compositions of zirconium (Zr) in the continental crust, it was found that the Zr isotopic composition remained relatively stable throughout the evolution, revealing the compositional evolutionary history of the crust.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
M. Shmeit, C. Chauvel, F. Giraud, E. Jaillard, S. Reboulet, M. Masrour, J. E. Spangenberg, A. El-Samrani
Summary: The Cretaceous marine sedimentary record reveals periods with high organic matter content corresponding to oceanic anoxic events. The Weissert Event, occurring during the Valanginian stage, is the first such event in the Cretaceous. This study examines the potential triggers for the associated environmental changes and concludes that continental weathering, rather than volcanic activity, was the dominant source of nutrients in sediments from the central Moroccan margin during this time.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Aymeric Hermann, Pamela Gutierrez, Catherine Chauvel, Rene Maury, Celine Liorzou, Edson Willie, Iarawai Phillip, Robert Forkel, Christoph Rzymski, Stuart Bedford
Summary: We conducted a large-scale geochemical sourcing study on stone artifacts excavated from archaeological sites in Vanuatu, the Solomon Islands, and the Caroline Islands. Our findings provide clear evidence of multiple long-distance voyages, with exotic stone materials being transported up to 2500 kilometers from their source. These results highlight the high mobility in the Western Pacific during the last millennium CE and shed light on the contacts between Polynesian Outliers, neighboring societies in the Western Pacific, and Western Polynesia.
Article
Geosciences, Multidisciplinary
Morgane Ledevin, Nicholas Arndt, Catherine Chauvel, Etienne Jaillard, Alexandre Simionovici
Article
Geosciences, Multidisciplinary
Natalie Vogeli, Pascale Huyghe, Peter van der Beek, Yani Najman, Eduardo Garzanti, Catherine Chauvel
Article
Archaeology
Aymeric Hermann, Lucie Sauzeat, Herve Guillou, Rene C. Maury, Catherine Chauvel, Celine Liorzou, Eric Conte
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2017)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)