Results 31 to 40 of about 10,688,728 (289)

Geochemical and Visual Indicators of Hydrothermal Fluid Flow through a Sediment-Hosted Volcanic Ridge in the Central Bransfield Basin (Antarctica) [PDF]

, 2013
In the austral summer of 2011 we undertook an investigation of three volcanic highs in the Central Bransfield Basin, Antarctica, in search of hydrothermal activity and associated fauna to assess changes since previous surveys and to evaluate the extent ...
Aquilina Alfred, Alfred Aquilina, Huvenne, Veerle A.I., Hepburn, Laura E., Hawkes Jeffrey A., Copley, Jon T., Hawkes, Jeffrey A., Mills Rachel A., Leigh Marsh, Paul A Tyler, Veerle A I Huvenne, Mills, Rachel A., Rachel A Mills, Tyler Paul A., Connelly, Douglas P., Marsh, Leigh, Hepburn Laura E., Tyler, Paul A., Douglas P Connelly, Darryl R H Green, Jeffrey A Hawkes, Green, Darryl R.H., Jon T Copley, Copley Jon T., Huvenne Veerle A. I., Connelly Douglas P., Green Darryl R. H., Marsh Leigh, Laura E Hepburn, Aquilina, Alfred   +29 more
core   +2 more sources

Liquid and supercritical CO2 as an organic solvent in Hadean seafloor hydrothermal systems: implications for prebiotic chemical evolution

Progress in Earth and Planetary Science, 2022
Prebiotic chemical evolution and the emergence of life in the seafloor hydrothermal systems of Hadean Earth is among the most plausible and popular hypotheses for the origin of earthly life.
Takazo Shibuya, Ken Takai
doaj   +1 more source

Moytirra: Discovery of the first known deep-sea hydrothermal vent field on the slow-spreading Mid-Atlantic Ridge north of the Azores [PDF]

, 2013
Geological, biological, morphological, and hydrochemical data are presented for the newly discovered Moytirra vent field at 45oN. This is the only high temperature hydrothermal vent known between the Azores and Iceland, in the North Atlantic and is ...
Coughlan, M., Dorschel, Boris, M. Coughlan, Lim, Aaron, Carlsson, Jens, J. Carlsson, Morris, K., A. Antoniacomi, Collins, P.; id_orcid, Green, Darryl R. H., B. Dorschel, Murton, B., D. Green, V. Nye, Collins, Patrick, Judge, Maria, J. Copley, Green, D., Murton, Bramley J., P. Collins, Wheeler, A.J., Carlsson, J., Benzie, J., Murton, B.J., Morris, Kristy J., Dorschel, B., A. Lim, Nye, V., Copley, Jonathan T., M. Judge, Collins, P., K. Morris, Lim, A., Judge, M., J. Benzie, Coughlan, Mark, B. Murton, Copley, J., Benzie, John, Wheeler, A. J., A. J. Wheeler, Antoniacomi, A., Nye, Verity, Antoniacomi, Alice   +43 more
core   +1 more source

Magnetotelluric Image of Transcrustal Magmatic System Beneath the Tulu Moye Geothermal Prospect in the Ethiopian Rift

Geophysical Research Letters, 2018
Continental rifting is initiated by a dynamic interplay between tectonic stretching and mantle upwelling. Decompression melting assists continental breakup through lithospheric weakening and enforces upflow of melt to the Earth's surface.
Friedemann Samrock, Alexander V. Grayver, Hjalmar Eysteinsson, Martin O. Saar   +3 more
doaj   +1 more source

Peptide Synthesis in Early Earth Hydrothermal Systems [PDF]

Astrobiology, 2009
We report here results from experiments and thermodynamic calculations that demonstrate a rapid, temperature-enhanced synthesis of oligopeptides from the condensation of aqueous glycine. Experiments were conducted in custom-made hydrothermal reactors, and organic compounds were characterized with ultraviolet-visible procedures.
Lemke, KH, Bird, DK, Rosenbauer, RJ
openaire   +4 more sources

Sulfur Impurities: The Overlooked Process in Volcanic Hazard Assessment

Geosciences
One of the most intriguing questions of modern volcanology is the inception of an eruption. Despite efforts to detect premonitory signals, numerous unpredicted eruptions have occurred recently. It has been suggested that these unpredicted eruptions might
Teresa Scolamacchia
doaj   +1 more source

Distribution Patterns of Iron-Oxidizing Zeta- and Beta-Proteobacteria From Different Environmental Settings at the Jan Mayen Vent Fields

Frontiers in Microbiology, 2018
Iron oxidizers are widespread in marine environments and play an important role in marine iron cycling. However, little is known about the overall distribution of iron oxidizers within hydrothermal systems, including settings with little hydrothermal ...
Jan Vander Roost, Jan Vander Roost, Frida Lise Daae, Frida Lise Daae, Ida Helene Steen, Ida Helene Steen, Ingunn Hindeness Thorseth, Ingunn Hindeness Thorseth, Håkon Dahle, Håkon Dahle   +9 more
doaj   +1 more source

Factoring Origin of Life Hypotheses into the Search for Life in the Solar System and Beyond

Life, 2020
Two widely-cited alternative hypotheses propose geological localities and biochemical mechanisms for life’s origins. The first states that chemical energy available in submarine hydrothermal vents supported the formation of organic compounds and ...
Alex Longo, Bruce Damer
doaj   +1 more source

The Basse-Terre Island of Guadeloupe (Eastern Caribbean, France) and Its Volcanic-Hydrothermal Geodiversity: A Case Study of Challenges, Perspectives, and New Paradigms for Resilience and Sustainability on Volcanic Islands

Geosciences, 2021
The volcanic-hydrothermal geo-diversity of the Basse-Terre Island of Guadeloupe archipelago (Eastern Caribbean, France) is a major asset of the Caribbean bio-geoheritage.
Roberto Moretti, Séverine Moune, David Jessop, Chagnon Glynn, Vincent Robert, Sébastien Deroussi   +5 more
doaj   +1 more source

Arsenic in marine hydrothermal systems: source, fate and environmental implication

, 2013
The compilation of papers in this special issue provides a state-of-the-art account of arsenic research in marine hydrothermal systems, showing recent advancements and challenging issues, innovative developments and the necessity and opportunity for ...
Bundschuh, Jochen, Pichler, Thomas
core   +1 more source