Results 51 to 60 of about 8,119 (174)
Frontiers in Earth Science, 2022 The ophiolitic rocks, island arc metasediments, and granitic rocks are encountered in the study of the Allaqi province. The present study concentrated on ultramafic rocks and their various forms of hydrothermal alteration.
A. M. Abdel-Rahman +10 more
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Sea-floor tectonics and submarine hydrothermal systems [PDF]
, 2005 The discovery of metal-depositing hot springs on the sea floor, and especially their link to chemosynthetic life, was among the most compelling and significant scientific advances of the twentieth century. More than 300 sites of hydrothermal activity and
de Ronde, Cornell D. J. +2 more
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The Origin and Occurrence of Natural Hydrogen
Energies, 2023 Hydrogen is an attractive, clean, sustainable energy source primarily produced via industry. At present, most reviews on hydrogen mainly focus on the preparation and storage of hydrogen, while the development and utilization of natural hydrogen will ...
Lu Wang +4 more
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A Petro‐Physical Model for Serpentinized Mantle and Origin of Natural Hydrogen in the Pyrenees
Geochemistry, Geophysics, GeosystemsThe relationships between the serpentinized continental mantle in orogens, its geophysical signature at depth and hydrogen seepages are poorly understood.
Sepideh Pajang +4 more
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Frontiers in Microbiology, 2023 The terrestrial serpentinite-hosted ecosystem known as “The Cedars” is home to a diverse microbial community persisting under highly alkaline (pH ~ 12) and reducing (Eh < −550 mV) conditions.
Jaclyn Thompson +20 more
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Prebiotic Organic Globules [PDF]
, 2010 Analogs of organic globules observed in carbonaceous chondrite meteorites and in interplanetary dust particles and of rod to spherical structures observed in terrestrial archean microstructures have been synthesized in our experiments conducted with ...
Marie-Paule Bassez, Yoshinori Takano
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From serpentinization to carbonation : new insights from a CO2 injection experiment [PDF]
, 2013 Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Earth and Planetary Science Letters 379 (2013)
Klein, Frieder, McCollom, Thomas M.
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Frontiers in Microbiology, 2018 The Bay of Prony, South of New Caledonia, represents a unique serpentinite-hosted hydrothermal field due to its coastal situation. It harbors both submarine and intertidal active sites, discharging hydrogen- and methane-rich alkaline fluids of low ...
Eléonore Frouin +7 more
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Pulsated Global Hydrogen and Methane Flux at Mid‐Ocean Ridges Driven by Pangea Breakup
Geochemistry, Geophysics, Geosystems, 2020 Molecular hydrogen production occurs through the serpentinization of mantle peridotite exhumed at mid‐ocean ridges. Hydrogen is considered essential to sustain microbial life in the subsurface; however, estimates of hydrogen flux through geological time ...
Andrew S. Merdith +5 more
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Looking for natural hydrogen in Albania and Kosova
Frontiers in Earth Science, 2023 A regional geochemistry field study was conducted in Albania and Kosova to spot natural H2 occurrences related to ophiolite massifs. A total of 21 sites, mainly consisting of natural springs, were studied, and nine were sampled for analyzing associated ...
Dan Lévy +6 more
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