Results 1 to 10 of about 34,268 (264)

Metal Catalysis Acting on Nitriles in Early Earth Hydrothermal Systems

Life, 2023
Hydrothermal systems are areas in which heated fluids and organic molecules rush through basaltic material rich in metals and minerals. By studying malononitrile and acetonitrile, we examine the effects of metal and mineral nanoparticles on nitrile ...
Miranda Sturtz, Christopher House
doaj   +2 more sources

Bacterial Diversity and Biogeochemistry of Two Marine Shallow-Water Hydrothermal Systems off Dominica (Lesser Antilles) [PDF]

Frontiers in Microbiology, 2017
Shallow-water hydrothermal systems represent extreme environments with unique biogeochemistry and high biological productivity, at which autotrophic microorganisms use both light and chemical energy for the production of biomass. Microbial communities of
Petra Pop Ristova, Thomas Pichler, Michael W. Friedrich, Solveig I. Bühring   +3 more
doaj   +2 more sources

Comparative Metagenomics Highlight a Widespread Pathway Involved in Catabolism of Phosphonates in Marine and Terrestrial Serpentinizing Ecosystems

mSystems, 2022
Serpentinizing hydrothermal systems result from water circulating into the subsurface and interacting with mantle-derived rocks notably near mid-ocean ridges or continental ophiolites.
Eléonore Frouin, Aurélien Lecoeuvre, Fabrice Armougom, Matthew O. Schrenk, Gaël Erauso   +4 more
doaj   +1 more source

Stability of DL-Glyceraldehyde under Simulated Hydrothermal Conditions: Synthesis of Sugar-like Compounds in an Iron(III)-Oxide-Hydroxide-Rich Environment under Acidic Conditions

Life, 2022
Researchers have suggested that the condensation of low-molecular-weight aldehydes under basic conditions (e.g., pH > 11) is the prebiotic reaction responsible for the abiotic formation of carbohydrates.
Claudio Alejandro Fuentes-Carreón, Jorge Armando Cruz-Castañeda, Eva Mateo-Martí, Alicia Negrón-Mendoza   +3 more
doaj   +1 more source

Listvenites: new insights of a hydrothermal system fossilized in Cerro Matoso peridotites, Montelíbano, Córdoba Department, Colombia

Boletín Geológico, 2020
The products of metasomatic alteration (e.g., carbonation) of peridotites are called listvenites. Based on a description of the outcrops in the laterite deposit at Cerro Matoso located in the NW of Colombia, the mineralogical composition confirmed by ...
Andrés Castrillón, Javier Guerrero
doaj   +1 more source

Submarine Shallow-Water Fluid Emissions and Their Geomicrobiological Imprint: A Global Overview

Frontiers in Marine Science, 2021
Submarine fluids emissions in the form of geothermal vents are widespread in a variety of geological settings ranging from volcanic to tectonically active areas.
Giorgio Caramanna, Stefan M. Sievert, Solveig I. Bühring   +2 more
doaj   +1 more source

Recent high-resolution mapping of Guaymas hydrothermal fields (Southern Trough)

BSGF - Earth Sciences Bulletin, 2018
Insights into the factors controlling fluid circulation through the crust and the nature of fluid venting at the seafloor are first steps in understanding their effect on ocean properties and climate change.
Ondréas Hélène, Scalabrin Carla, Fouquet Yves, Godfroy Anne   +3 more
doaj   +1 more source

Monitoring Hydrothermal Activity Using Major and Trace Elements in Low-Temperature Fumarolic Condensates: The Case of La Soufriere de Guadeloupe Volcano

Geosciences, 2022
At the hydrothermal stage, volcanoes are affected by internal and external processes that control their fumarolic and eruptive activity. Monitoring hydrothermal activity is challenging given the diverse nature of the processes accounting for deeper ...
Manuel Inostroza, Séverine Moune, Roberto Moretti, Vincent Robert, Magali Bonifacie, Elodie Chilin-Eusebe, Arnaud Burtin, Pierre Burckel   +7 more
doaj   +1 more source

Hydrothermal Cooling as a Requirement for Short Storage of Silicic Magmas

Geochemistry, Geophysics, Geosystems, 2021
Large (>50 km3) magma bodies that contribute to caldera‐forming eruptions in the Taupō Volcanic Zone (TVZ), New Zealand have shown evidence for crystallization and storage on the order of decades to centuries prior to eruption.
Liam J. Kelly, Guilherme A. R. Gualda, Darren M. Gravley, David E. Dempsey   +3 more
doaj   +1 more source

Novel barite chimneys at the Loki´s Castle Vent Field shed light on key factors shaping microbial communities and functions in hydrothermal systems

Frontiers in Microbiology, 2016
In order to fully understand the cycling of elements in hydrothermal systems it is critical to understand intra-field variations in geochemical and microbiological processes in both focused, high-temperature and diffuse, low-temperature areas.
Ida Helene eSteen, Hakon eDahle, Runar eStokke, Irene eRoalkvam, Frida-Lise eDaae, Hans-Tore eRapp, Rolf-Birger ePedersen, Ingunn Hindenes Thorseth   +7 more
doaj   +1 more source