Search Results - "Holm, Nils G"

Biogenic Mn-Oxides in Subseafloor Basalts by Ivarsson, Magnus, Broman, Curt, Gustafsson, Håkan, Holm, Nils G

“…The deep biosphere of the subseafloor basalts is recognized as a major scientific frontier in disciplines like biology, geology, and oceanography. Recently,…”
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Olivine alteration and H2 production in carbonate-rich, low temperature aqueous environments by Neubeck, Anna, Duc, Nguyen Thanh, Hellevang, Helge, Oze, Christopher, Bastviken, David, Bacsik, Zoltán, Holm, Nils G.

“…Hydrous alteration of olivine is capable of producing molecular hydrogen (H2) under a wide variety of hydrothermal conditions. Although olivine hydrolysis…”
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Serpentinization: Connecting Geochemistry, Ancient Metabolism and Industrial Hydrogenation by Preiner, Martina, Xavier, Joana C, Sousa, Filipa L, Zimorski, Verena, Neubeck, Anna, Lang, Susan Q, Greenwell, H Chris, Kleinermanns, Karl, Tüysüz, Harun, McCollom, Tom M, Holm, Nils G, Martin, William F

“…Rock⁻water⁻carbon interactions germane to serpentinization in hydrothermal vents have occurred for over 4 billion years, ever since there was liquid water on…”
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Distributions of Microbial Activities in Deep Subseafloor Sediments by D'Hondt, Steven, Jørgensen, Bo Barker, Miller, D. Jay, Batzke, Anja, Blake, Ruth, Cragg, Barry A, Cypionka, Heribert, Dickens, Gerald R, Ferdelman, Timothy, Hinrichs, Kai-Uwe, Holm, Nils G, Mitterer, Richard, Spivack, Arthur, Wang, Guizhi, Bekins, Barbara, Engelen, Bert, Ford, Kathryn, Gettemy, Glen, Rutherford, Scott D, Sass, Henrik, Skilbeck, C. Gregory, Aiello, Ivano W, Guèrin, Gilles, House, Christopher H, Inagaki, Fumio, Meister, Patrick, Naehr, Thomas, Niitsuma, Sachiko, Parkes, R. John, Schippers, Axel, Smith, David C, Teske, Andreas, Wiegel, Juergen, Padilla, Christian Naranjo, Acosta, Juana Luz Solis

“…Diverse microbial communities and numerous energy-yielding activities occur in deeply buried sediments of the eastern Pacific Ocean. Distributions of metabolic…”
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Biological Formation of Ethane and Propane in the Deep Marine Subsurface by Hinrichs, Kai-Uwe, Hayes, John M., Bach, Wolfgang, Spivack, Arthur J., Hmelo, Laura R., Holm, Nils G., Johnson, Carl G., Sylva, Sean P.

“…Concentrations and isotopic compositions of ethane and propane in cold, deeply buried sediments from the southeastern Pacific are best explained by microbial…”
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Laboratory Studies of Methane and Its Relationship to Prebiotic Chemistry by Kobayashi, Kensei, Geppert, Wolf D, Carrasco, Nathalie, Holm, Nils G, Mousis, Olivier, Palumbo, Maria Elisabetta, Waite, J Hunter, Watanabe, Naoki, Ziurys, Lucy M

“…To examine how prebiotic chemical evolution took place on Earth prior to the emergence of life, laboratory experiments have been conducted since the 1950s…”
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Borophosphates and silicophosphates as plausible contributors to the emergence of life by da Silva, José A.L., Holm, Nils G.

“…[Display omitted] •Inorganic hydrogels as cradle of prebiotic processes.•Enantiomeric enrichment using chiral minerals.•Chiral minerals derived from inorganic…”
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Formation of H2 and CH4 by weathering of olivine at temperatures between 30 and 70°C by Neubeck, Anna, Duc, Nguyen Thanh, Bastviken, David, Crill, Patrick, Holm, Nils G

“…Hydrocarbons such as CH4 are known to be formed through the Fischer-Tropsch or Sabatier type reactions in hydrothermal systems usually at temperatures above…”
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Reduction of nitrogen compounds in oceanic basement and its implications for HCN formation and abiotic organic synthesis by Holm, Nils G, Neubeck, Anna

“…Hydrogen cyanide is an excellent organic reagent and is central to most of the reaction pathways leading to abiotic formation of simple organic compounds…”
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Hydrothermal simulation experiments as a tool for studies of the origin of life on Earth and other terrestrial planets: a review by Holm, Nils G, Andersson, Eva

“…The potential of life's origin in submarine hydrothermal systems has been evaluated by a number of investigators by conducting high temperature-high pressure…”
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Alkaline fluid circulation in ultramafic rocks and formation of nucleotide constituents: a hypothesis by Holm, Nils G, Dumont, Marion, Ivarsson, Magnus, Konn, Cécile

“…Seawater is constantly circulating through oceanic basement as a low-temperature hydrothermal fluid (<150 degrees C). In cases when ultramafic rocks are…”
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Differential Adsorption of Nucleic Acid Bases: Relevance to the Origin of Life by Sowerby, Stephen J., Cohn, Corey A., Heckl, Wolfgang M., Holm, Nils G.

“…The adsorption of organic molecules onto the surfaces of inorganic solids has long been considered a process relevant to the origin of life. We have determined…”
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Chromite oxidation by manganese oxides in subseafloor basalts and the presence of putative fossilized microorganisms by Ivarsson, Magnus, Broman, Curt, Holm, Nils G

“…Chromite is a mineral with low solubility and is thus resistant to dissolution. The exception is when manganese oxides are available, since they are the only…”
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Characterisation of dissolved organic compounds in hydrothermal fluids by stir bar sorptive extraction - gas chomatography - mass spectrometry. Case study: the Rainbow field (36°N, Mid-Atlantic Ridge) by Konn, Cecile, Charlou, Jean-Luc, Donval, Jean-Pierre, Holm, Nils G

“…The analysis of the dissolved organic fraction of hydrothermal fluids has been considered a real challenge due to sampling difficulties, complexity of the…”
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A demonstration of an affinity between pyrite and organic matter in a hydrothermal setting by Lindgren, Paula, Parnell, John, Holm, Nils G, Broman, Curt

“…One of the key-principles of the iron-sulphur world theory is to bring organic molecules close enough to interact with each other, using the surface of pyrite…”
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Isotopic Signatures of Carbon in the ‘Los Pobres’ Graphite Mine, Ronda, Spain by Neubeck, Anna, Broman, Curt, Ivarsson, Magnus, Holm, Nils G, Whitehouse, Martin, Nilsson, Sara, Geppert, Wolf, Gervilla, Fernando

“…Abstract Graphite formation temperatures in the ‘Los Pobres’ mine within the Ronda peridotite, Spain, previously reported to be between 770 and 820 °C, have…”
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The evolution of organic matter in space by Ehrenfreund, Pascale, Spaans, Marco, Holm, Nils G.

“…Carbon, and molecules made from it, have already been observed in the early Universe. During cosmic time, many galaxies undergo intense periods of star…”
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Methane clathrates in the solar system by Mousis, Olivier, Chassefière, Eric, Holm, Nils G, Bouquet, Alexis, Waite, Jack Hunter, Geppert, Wolf Dietrich, Picaud, Sylvain, Aikawa, Yuri, Ali-Dib, Mohamad, Charlou, Jean-Luc, Rousselot, Philippe

“…We review the reservoirs of methane clathrates that may exist in the different bodies of the Solar System. Methane was formed in the interstellar medium prior…”
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Glasses as sources of condensed phosphates on the early earth by Holm, Nils G

“…Procedures for the analysis of phosphorus in geological material normally aims for the determination of the total amount of P expressed as orthophosphate PO 4…”
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Initial indications of abiotic formation of hydrocarbons in the Rainbow ultramafic hydrothermal system, Mid-Atlantic Ridge by Holm, Nils G., Charlou, Jean Luc

“…In the presence of water, olivine of ultramafic rock is oxidized during the process referred to as `serpentinization'. Water in contact with the olivine is…”
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