Results 11 to 20 of about 748 (152)
Self‐Reversed Magnetization in Sediments Caused by Greigite Alteration
Geophysical Research Letters, 2023 Multipolarity remanence in greigite‐bearing sediments has long been recognized, but the cause of this anomalous remanence behavior is not well understood.
Liao Chang +6 more
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Greigite nanocrystals produced by hyperthermophilic archaea of Thermococcales order. [PDF]
PLoS ONE, 2018 Interactions between hyperthermophilic archaea and minerals occur in hydrothermal deep-sea vents, one of the most extreme environments for life on Earth. These interactions occur in the internal pores and at surfaces of active hydrothermal chimneys.
Aurore Gorlas +5 more
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Greigite (Fe3S4) Formation in Artificial Sediments via Solid‐State Transformation of Lepidocrocite
Geochemistry, Geophysics, Geosystems, 2022 Greigite (Fe3S4) is a ferrimagnetic iron‐sulfide mineral that forms in sediments during diagenesis. Greigite growth can occur diachronously within a stratigraphic profile, complicating or overprinting environmental and paleomagnetic records. An important
Sophie C. Roud +2 more
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Frontiers in Earth Science, 2021 Authigenic ferrimagnetic iron sulfides, essentially greigite (Fe3S4), are commonly found in gas hydrate-bearing marine sediments of active accretionary prisms.
Myriam Kars, Annika Greve, Lilly Zerbst
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Frontiers in Earth Science, 2021 In this study, we conducted a comprehensive investigation of rock magnetic, mineralogical, and sedimentological records of sediment cores supplemented by a high resolution seismic data to elucidate the controls of structural and diagenetic (early vs ...
Virsen Gaikwad +4 more
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Characterization and Phylogenetic Analysis of a Novel Uncultivated Magnetotactic Coccus Harbouring Multi-Chain Magnetosomes. [PDF]
Environ Microbiol RepA novel marine magnetotactic coccus, strain HHB‐1, was isolated from intertidal sediments in Houhai Bay, China. HHB‐1 cells are large coccoid–ovoid bacteria that contain multiple chains of prismatic magnetite magnetosomes and conspicuous Ca/Mg‐rich polyphosphate granules.
Che Y +6 more
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Switchable Fermi surface sheets in greigite [PDF]
Physical Review B, 2012 Greigite (Fe3S4) and magnetite (Fe3O4) are isostructural and isoelectronic ferrimagnets with quite distinct properties. Electronic structure calculations reveal greigite is a normalmetal in contrast to half-metallic magnetite. Greigite shows a complex Fermi surface with a unique influence of relativistic effects: The existence of sheets of the Fermi ...
Zhang, B., Wijs, G.A. de, Groot, R.A. de
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Decadal Geomagnetic Secular Variations From Greigite Bearing Dead Sea Sediments
Geochemistry, Geophysics, Geosystems, 2021 Archeomagnetic data from the Levant revealed periods within the Holocene with fast and extreme changes in the geomagnetic field. Yet, the availability of the archeomagnetic data is sporadic and the correlation with the available sedimentary records from ...
Yael Ebert, Ron Shaar, Mordechai Stein
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Geophysical Research Letters, 2023 Magnetic greigite may be a valuable indicator for methane emissions in the geological past, if its formation pathway and diagenetic environment can be unambiguously defined.
Xiaoxiao Yu +7 more
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Magnetic Properties of Late Holocene Dead Sea Sediments as a Monitor of Regional Hydroclimate
Geochemistry, Geophysics, Geosystems, 2020 Diagenetic processes in anoxic sedimentary environments influence sediment magnetic properties mainly through dissolution of detrital magnetite and precipitation of authigenic greigite.
Y. Ebert +5 more
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