Article
Geochemistry & Geophysics
Yu-Te Hsieh, Luke Bridgestock, Peter P. Scheuermann, William E. Seyfried, Gideon M. Henderson
Summary: The study reveals that hydrothermal vent fluids contain a variety of barium forms, but their initial composition changes due to barite precipitation. Water-rock interaction in the deep oceanic crust appears to occur without barium isotope fractionation. During mixing with seawater, barite precipitation selectively removes isotopically light barium from the fluids.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Environmental Sciences
J. Marticorena, M. Matabos, E. Ramirez-Llodra, C. Cathalot, A. Laes-Huon, R. Leroux, S. Hourdez, J. -P. Donval, J. Sarrazin
Summary: This study implemented a novel experimental approach to assess the recovery potential of vent communities along the slow-spreading northern Mid-Atlantic Ridge. Within 2 years after inducing a small-scale disturbance, most taxonomic richness had recovered, but there was only partial recovery of faunal densities and a major change in faunal composition. The results suggest a potential role of mobile predators in early-colonisation stages.
MARINE ENVIRONMENTAL RESEARCH
(2021)
Article
Geochemistry & Geophysics
Dennis Sanchez-Mora, John Jamieson, Mathilde Cannat, Javier Escartin, Thibaut Barreyre
Summary: In this study, the Lucky Strike vent field on the Mid-Atlantic Ridge is investigated using bulk rock geochemistry and in situ sulfur isotope analysis. The results show that the hydrothermal deposits in the vent field contain elevated concentrations of elements enriched in mid-ocean ridge basalt. The sulfur isotope compositions of hydrothermal marcasite and chalcopyrite are similar to other sediment-free basalt-hosted seafloor hydrothermal sites, but there are differences in sulfur isotopes between different vent sites. Furthermore, the geochemistry of the hydrothermal deposits at Lucky Strike can be distinguished from other types of deposits using the Ba/Co ratio.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Environmental Sciences
Jozee Sarrazin, Cecile Cathalot, Agathe Laes, Julien Marticorena, Loic N. Michel, Marjolaine Matabos
Summary: This study describes the ecology of new types of assemblage dominated by gastropods found in several active sulfide edifices along the northern Mid-Atlantic Ridge. The composition, abundance, diversity, and trophic niche of these assemblages were assessed and compared, revealing different characteristics in different vent fields. These gastropods may play an important ecological role in the MAR vent communities.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Chemistry, Physical
Valentine Combaudon, Isabelle Moretti, Barbara I. Kleine, Andri Stefansson
Summary: Hydrogen emissions from geothermal fields in Iceland are comparable to those along the mid-Atlantic Ridge, with concentrations mainly influenced by rock type and source water composition. Geothermal power plants in Iceland emit approximately 1.2 kt H-2 per year, which could potentially be utilized given the implementation of necessary extraction technologies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Geochemistry & Geophysics
Alessio Sanfilippo, Vincent J. M. Salters, Sergey Y. Sokolov, Alexander A. Peyve, Andreas Stracke
Summary: The upper mantle is a mixture of refractory and recycled crustal domains, with the recycled portions dominating the composition of surface basalts. Hf isotope ratios may provide hints for melting of refractory source materials in basalts, allowing the identification of depleted mantle materials. Basalts from the Arctic Atlantic show high Hf isotope ratios, suggesting a highly depleted asthenospheric mantle source beneath this region.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geology
Baoju Yang, Jihua Liu, Chuanshun Li, Aimei Zhu, Hongmin Wang, Jingjing Cui, Hui Zhang, Qiannan Hu, Xuefa Shi
Summary: This study presents mineralogical and geochemical analyses of unconsolidated submarine surface sediments collected from different hydrothermal fields along the southern Mid-Atlantic Ridge. The results show that the formation of mineral deposits in these fields varies with temperature. The geochemical data indicate that hydrothermal materials are the main source of non-biological components in the sediments. The hydrothermal fields in question may have undergone phase separation, resulting in the formation of different types of sulfide-rich sediments. In the northern segment, sediment particles from plume fall-out are the primary source, while in the southern segment, hydrothermal materials are mainly derived from collapsed chimneys and debris precipitated from hydrothermal fluids.
ORE GEOLOGY REVIEWS
(2022)
Article
Environmental Sciences
Mariana Cruz, Nadine Le Bris, Ana Colaco
Summary: This study revealed the reproductive ecology characteristics of hydrothermal vent species S. mesatlantica, including the behavior of brooding female crabs, gametogenesis, fecundity, and embryonic and larvae development. The results showed that brooding crabs exhibit specific brooding behaviors and may provide oxygen to their embryos.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geochemistry & Geophysics
Wenhao Wang, Alastair Lough, Maeve C. Lohan, Douglas P. Connelly, Matthew Cooper, J. Andy Milton, Valerie Chavagnac, Alain Castillo, Rachael H. James
Summary: This study investigates the significance of hydrothermal iron inputs to the oceanic Fe inventory and the potential changes in Fe isotopes during mixing of hydrothermal vent fluids and seawater. Results show that the iron isotopic signature of dissolved Fe is mainly controlled by oxidation of Fe(II) and precipitation of Fe-(oxyhydr)oxides.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Microbiology
Mustafa Yuecel, Serhat Sevgen, Nadine Le Bris
Summary: The study reveals the presence of different sizes of iron particles in the Mid-Atlantic Ridge hydrothermal system, where the nanoparticulate/colloidal phase changes with sample temperature and the distribution of iron particles of different sizes varies in the plume. The results support previous observations of dissolved iron in MAR vent plumes, suggesting that this recalcitrant iron pool contributes to maintaining high hydrothermal iron fluxes to the deep ocean. Unexpected findings in sample collection could have implications for further research.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Oceanography
Unyime U. Umoh, Li Li, Juan He, Lingdi Chen, Liang Dong, Guodong Jia, Niko Lahajnar, Gary Massoth, Ulrich Schwarz-Schampera
Summary: Investigations on hydrocarbon distribution in deep seawaters of the Mid-Indian Basin and hydrothermal vent sites of the Central and Southeast Indian Ridges revealed a bimodal distribution of detected hydrocarbons, with a predominance of even-numbered n-alkenes and a series of n-alkane hydrocarbons. The presence of sulfate-reducing microorganisms and potential abiogenic sources may contribute to the distribution features. Additionally, the aliphatic profiles reflect bio-geochemical processes and minor impacts of hydrothermal activity on hydrocarbon distributions and deep water circulations in the Indian Ocean.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2021)
Article
Geochemistry & Geophysics
Dennis Sanchez-Mora, John Jamieson, Mathilde Cannat, Javier Escartin, Thibaut Barreyre
Summary: In this study, we determined the age (>6,600 years) and mass (about 1.3 Mt) of metal-rich deposits formed at the Lucky Strike cluster of high-temperature seafloor hot springs located on the Mid-Atlantic Ridge. We also calculated the average rate of formation (194 t/yr) of these deposits. Our findings show that the Lucky Strike vent field is younger than other vent fields along the Mid-Atlantic Ridge, but has similar formation rates, which are high compared to other geological processes producing metal-rich deposits.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Pengyuan Guo, Yaoling Niu, Pu Sun, Junjie Zhang, Shuo Chen, Meng Duan, Hongmei Gong, Xiaohong Wang
Summary: The study provides new Sr-Nd-Hf isotopic data on mid-ocean ridge basalts from the Oceanographer and Hayes fracture zones at the Mid-Atlantic Ridge to constrain the nature and origin of upper mantle heterogeneity. The data illustrate that the mantle sources of these lavas comprise three components, including ADM, E-type I, and E-type II components, which explain the contrast in crustal thickness, ridge morphology, and mantle Bouguer anomalies between the two ridge segments.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Review
Oceanography
Loic Van Audenhaege, Marjolaine Matabos, Anik Brind'Amour, Jonathan Drugmand, Agathe Laes-Huon, Pierre-Marie Sarradin, Jozee Sarrazin
Summary: Understanding the ecological variability of deep-sea hydrothermal vents is important for comprehending ecosystem functioning. This study analyzes a 7-year time series of images and environmental data to characterize the dynamics of a vent faunal assemblage dominated by Bathymodiolus azoricus mussels. The results show that the habitat conditions and mussel assemblages in the vent field remain relatively stable over time, with some small-scale variability related to tidal periodicity and local temperature anomalies. The development patterns of microbial mats in the vent field are influenced by various factors, including biotic interactions. Compared to coastal counterparts, mussel assemblages in the vent field experience relatively stable and mild environmental conditions.
PROGRESS IN OCEANOGRAPHY
(2022)
Review
Environmental Sciences
Teresa Radziejewska, Magdalena Blazewicz, Maria Wlodarska-Kowalczuk, Piotr Jozwiak, Krzysztof Pabis, Jan Marcin Weslawski
Summary: In February 2018, the Government of Poland and the International Seabed Authority signed a 15-year contract for exploration of polymetallic sulfide deposits. The exploration will focus on benthic communities in the contract area, with special attention given to potential knowledge gaps and the unique Lost City hydrothermal field. Significant efforts will be needed to address these gaps during exploration surveys.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Oceanography
Jozee Sarrazin, Pierre Legendre, Fanny de Busserolles, Marie-Claire Fabri, Katja Guilini, Viatcheslav N. Ivanenko, Marie Morineaux, Ann Vanreusel, Pierre-Marie Sarradin
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2015)
Article
Environmental Sciences
Pierre Cresson, Marie Claire Fabri, Francoise Marco Miralles, Jean-Louis Dufour, Romain Elleboode, Karine Sevin, Kelig Mahe, Marc Bouchoucha
ENVIRONMENTAL POLLUTION
(2016)
Article
Oceanography
A. Bargain, F. Foglini, I. Pairaud, D. Bonaldo, S. Carniel, L. Angeletti, M. Taviani, S. Rochette, M. C. Fabri
PROGRESS IN OCEANOGRAPHY
(2018)
Article
Oceanography
M-C. Fabri, L. Pedel, L. Beuck, F. Galgani, D. Hebbeln, A. Freiwald
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2014)
Review
Geosciences, Multidisciplinary
A. Tassy, F. Fournier, P. Munch, J. Borgomano, I. Thinon, M. -C. Fabri, M. Rabineau, B. Arfib, J. Begot, M. -O Beslier, J. -J. Cornee, A. Fournillon, C. Gorini, P. Guennoc, P. Leonide, J. Oudet, F. Paquet, F. Sage, R. Toullec
MARINE AND PETROLEUM GEOLOGY
(2014)
Article
Environmental Sciences
P. Cresson, M. C. Fabri, M. Bouchoucha, C. Brach Papa, F. Chavanon, A. Jadaud, J. Knoery, F. Miralles, D. Cossa
SCIENCE OF THE TOTAL ENVIRONMENT
(2014)
Article
Environmental Sciences
O. Gerigny, M. Brun, M. C. Fabri, C. Tomasino, M. Le Moigne, A. Jadaud, F. Galgani
MARINE POLLUTION BULLETIN
(2019)
Article
Oceanography
Marie-Claire Fabri, Beatriz Vinha, Anne-Gaelle Allais, Marie-Edith Bouhier, Olivier Dugornay, Arnaud Gaillot, Aurelien Arnaubec
PROGRESS IN OCEANOGRAPHY
(2019)
Article
Environmental Sciences
Michela Angiolillo, Olivia Gerigny, Tommaso Valente, Marie-Claire Fabri, Eric Tambute, Elodie Rouanet, Francoise Claro, Leonardo Tunesi, Anne Vissio, Boris Daniel, Francois Galgani
Summary: The Mediterranean Sea is highly polluted and serves as a hotspot for marine litter. Research in the Ligurian Sea revealed high accumulation of litter in underwater canyons and seamounts, impacting benthic communities and deep-sea species. Urgent measures are needed to manage deep-sea pollution and reduce litter input in marine environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Emanuela Fanelli, Silvia Bianchelli, Federica Foglini, Miquel Canals, Giorgio Castellan, Queralt Guell-Bujons, Bella Galil, Menachem Goren, Julian Evans, Marie-Claire Fabri, Sandrine Vaz, Tiziana Ciuffardi, Patrick J. Schembri, Lorenzo Angeletti, Marco Taviani, Roberto Danovaro
Summary: The benthic habitats of the deep Mediterranean Sea are facing increasing threats from human pressures, including fisheries, pollution, littering, oil and gas exploration, and climate change. International frameworks exist for the protection of deep-sea ecosystems, but there are challenges in identifying areas needing protection and implementing effective conservation measures. By comparing different analyses, priority areas for conservation in the deep Mediterranean Sea can be identified based on ecological relevance, connectivity, and the level of anthropogenic impacts. The results provide a strategy for ecosystem-based conservation in the deep Mediterranean Sea.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Marie-Claire Fabri, Olivier Dugornay, Xavier de la Bernardie, Charline Guerin, Pierre Sanchez, Aurelien Arnaubec, Tim Autin, Romain Piasco, Pere Puig
Summary: In the CALADU cruise of 2019, three types of 3D reconstructions were used to study the cold water coral colonies in the Lacaze-Duthiers Canyon. By mapping the canyon's flanks and building digital terrain models, the distribution and habitat of coral colonies were examined in three dimensions. The study also calculated the density and vertical distribution of the colonies and discovered new areas with abundant coral colonies. Additionally, micro-CT scans were used to analyze the intrinsic skeleton organization of different coral species.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2022)
Article
Environmental Studies
R. Danovaro, E. Fanelli, M. Canals, T. Ciuffardi, M. -C. Fabri, M. Taviani, M. Argyrou, E. Azzurro, S. Bianchelli, A. Cantafaro, L. Carugati, C. Corinaldesi, W. P. de Haan, A. Dell'Anno, J. Evans, F. Foglini, B. Galil, M. Gianni, M. Goren, S. Greco, J. Grimalt, Q. Guell-Bujons, A. Jadaud, L. Knittweis, J. L. Lopez, A. Sanchez-Vidal, P. J. Schembri, P. Snelgrove, S. Vaz
Article
Oceanography
M-C. Fabri, A. Bargain, I. Pairaud, L. Pedel, I. Taupier-Letage
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2017)
Article
Environmental Sciences
Marina Carreiro-Silva, Oscar Ocana, David Stankovic, Iris Sampaio, Filipe M. Porteiro, Marie-Claire Fabri, Sergio Stefanni
FRONTIERS IN MARINE SCIENCE
(2017)
Article
Environmental Sciences
Annaelle Bargain, Fabio Marchese, Alessandra Savini, Marco Taviani, Marie-Claire Fabri
FRONTIERS IN MARINE SCIENCE
(2017)