Search Results - "Holm, N G"

Serpentinization and the Formation of H2 and CH4 on Celestial Bodies (Planets, Moons, Comets) by Holm, N G, Oze, C, Mousis, O, Waite, J H, Guilbert-Lepoutre, A

“…Serpentinization involves the hydrolysis and transformation of primary ferromagnesian minerals such as olivine ((Mg,Fe)2SiO4) and pyroxenes ((Mg,Fe)SiO3) to…”
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The significance of Mg in prebiotic geochemistry by HOLM, N. G.

“…Magnesium plays a special role in biochemistry because of its ability to coordinate six oxygen atoms efficiently in its first coordination shell. Such oxygen…”
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The production of methane, hydrogen, and organic compounds in ultramafic-hosted hydrothermal vents of the Mid-Atlantic Ridge by Konn, C, Charlou, J L, Holm, N G, Mousis, O

“…Both hydrogen and methane are consistently discharged in large quantities in hydrothermal fluids issued from ultramafic-hosted hydrothermal fields discovered…”
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The internal structure of an active sea-floor massive sulphide deposit by Humphris, Susan E, Herzig, P. M, Miller, D. J, Alt, J. C, Becker, K, Brown, D, Brügmann, G, Chiba, H, Fouquet, Y, Gemmell, J. B, Guerin, G, Hannington, M. D, Holm, N. G, Honnorez, J. J, Iturrino, G. J, Knott, R, Ludwig, R, Nakamura, K, Petersen, S, Reysenbach, A-L, Rona, P. A, Smith, S, Sturz, A. A, Tivey, M. K, Zhao, X

“…Results obtained from drilling a series of holes into an actively forming sulphide deposit on the Mid-Atlantic Ridge are described. The observations…”
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Fluid inclusions as a tool to constrain the preservation conditions of sub-seafloor cryptoendoliths by Ivarsson, M., Broman, C., Lindblom, S., Holm, N.G.

“…The combination of fluid inclusion analyses and microfossil analyses is an excellent method to study the preservation process of deep sub-seafloor…”
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Hydrocarbons and oxidized organic compounds in hydrothermal fluids from Rainbow and Lost City ultramafic-hosted vents by Konn, C., Charlou, J.L., Donval, J.P., Holm, N.G., Dehairs, F., Bouillon, S.

“…The first building blocks of life could be produced in ultramafic-hosted hydrothermal systems considering the large amounts of hydrogen and methane generated…”
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Amino acid abundances and stereochemistry in hydrothermally altered sediments from the Juan de Fuca Ridge, northeastern Pacific Ocean by Andersson, Eva, Simoneit, Bernd R.T., Holm, Nils G.

“…The Juan de Fuca Ridge is a hydrothermally active, sediment covered, spreading ridge situated a few hundred kilometres off the west coast of North America in…”
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New insight into the contributions of thermogenic processes and biogenic sources to the generation of organic compounds in hydrothermal fluids by KONN, C., TESTEMALE, D., QUERELLOU, J., HOLM, N. G., CHARLOU, J. L.

“…Experiments on hydrothermal degradation of Pyrococcus abyssi biomass were conducted at elevated pressure (40 MPa) over a 200–450 °C temperature range in…”
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Fossilized microorganisms from the Emperor Seamounts: implications for the search for a subsurface fossil record on Earth and Mars by Ivarsson, M, Lausmaa, J, Lindblom, S, Broman, C, Holm, N G

“…We have observed filamentous carbon-rich structures in samples drilled at 3 different seamounts that belong to the Emperor Seamounts in the Pacific Ocean:…”
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Fossilized microorganisms associated with zeolite-carbonate interfaces in sub-seafloor hydrothermal environments by IVARSSON, M., LINDBLOM, S., BROMAN, C., HOLM, N. G.

“…ABSTRACT In this paper we describe carbon‐rich filamentous structures observed in association with the zeolite mineral phillipsite from sub‐seafloor samples…”
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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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Hydrothermal activity and the volume of the oceans by Holm, Nils G.

“…The volume of the world ocean can be regulated by exchange processes between the crust and the mantle. Hydrothermal systems of fast-spreading mid-ocean ridges…”
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What determines the volume of the oceans? by Kasting, J F, Holm, N G

“…The volume of Earth's oceans may be determined by a dynamic mechanism involving exchange of water between the crust and the mantle. Fast-spreading mid-ocean…”
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Abiotic synthesis of amino acids under hydrothermal conditions and the origin of life : a perpetual phenomenon ? by HENNET, R. J.-C, HOLM, N. C, ENGEL, M. H

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The stability of some selected amino acids under attempted redox constrained hydrothermal conditions by Andersson, E, Holm, N G

“…In order to evaluate the stability of aspartic acid, serine, leucine, and alanine under redox buffered hydrothermal conditions, a series of experiments have…”
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Biogenicity of silicified microbes from a hydrothermal system: relevance to the search for evidence of life on earth and other planets by Al-Hanbali, Hakam S., Sowerby, Stephen J., Holm, Nils G.

“…Scanning electron microscopy and microprobe analysis have been used to examine microstructures recovered from a hydrothermal mound at the Trans-Atlantic…”
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Origins of life: a route to nanotechnology by Sowerby, Stephen J., Holm, Nils G., Petersen, George B.

“…The origins of life and nanotechnology are two seemingly disparate areas of scientific investigation. However, the fundamental questions of life's beginnings…”
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Abiotic synthesis of organic compounds under the conditions of submarine hydrothermal systems: a perspective by Holm, Nils G., Andersson, Eva M.

“…Deep-sea hydrothermal systems have been proposed to be likely environments for chemical evolution and the origin of life on Earth. Recently, experiments have,…”
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Mn as a potential energy source for subseafloor chemoautotrophs by Ivarsson, M., Holm, N.G.

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New insight into the contributions of thermogenic processes and biogenic sources to the generation of organic compounds in hydrothermal fluids: On the origin of organic compounds in hydrothermal fluids by KONN, C., TESTEMALE, D., QUERELLOU, J., HOLM, N. G., CHARLOU, J. L.

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