Results 71 to 80 of about 8,119 (174)

Quantifying Natural Hydrogen Generation Rates and Volumetric Potential in Onshore Serpentinization

Geosciences
This study explores the generation of natural hydrogen through the serpentinization of onshore ultramafic rocks, highlighting its potential as a clean energy resource.
Reza Rezaee
doaj   +1 more source

Low‐Temperature (100°C–300°C) Magnetite Production in Variably Serpentinized Lherzolites

Geochemistry, Geophysics, Geosystems
The study of the serpentinization process in ultramafic rocks has been revived in recent years in response to the problems of natural hydrogen generation.
Keanu Loiseau, Charles Aubourg, Pierre Camps, Guilhem Hoareau, Claire Carvallo, Isabelle Moretti   +5 more
doaj   +1 more source

Out of the dark: Transitional subsurface-to-surface microbial diversity in a terrestrial serpentinizing seep (Manleluag, Pangasinan, the Philippines)

Frontiers in Microbiology, 2015
In the Zambales ophiolite range terrestrial serpentinizing fluid seeps host diverse microbial assemblages. The fluids fall within the profile of Ca2+-OH--type waters, indicative of active serpentinization, and are low in dissolved inorganic carbon (
Kristin eWoycheese, D'Arcy Renee Meyer-Dombard, Dawn eCardace, Anacleto eArgayosa, Carlo eArcilla   +4 more
doaj   +1 more source

Control of serpentinisation rate by reaction-induced cracking [PDF]

, 2017
Serpentinisation of mantle rocks requires the generation and maintenance of transport pathways for water. The solid volume increase during serpentinisation can lead to stress build-up and trigger cracking, which ease fluid penetration into the rock.
Brantut, N, Kaczmarek, M-A, Malvoisin, B
core   +1 more source

Subduction Zone Magnetism: The Influence of Metamorphism and Serpentinization in the Mantle Wedge

Geochemistry, Geophysics, Geosystems
Subduction zone magnetic anomalies have previously been used to infer their thermal structure assuming a uniformly serpentinized mantle carries a homogeneous, isotropic magnetization.
Y. Li, P. C. Lindquist, D. Han, B. Fish, R. J. Harrison, W. McCarthy, R. M. Palin, C. B. Condit, C. I. O. Nichols   +8 more
doaj   +1 more source

Organic Haze as a Biosignature in Anoxic Earth-like Atmospheres

, 2017
Early Earth may have hosted a biologically-mediated global organic haze during the Archean eon (3.8-2.5 billion years ago). This haze would have significantly impacted multiple aspects of our planet, including its potential for habitability and its ...
Arney, Giada N., Domagal-Goldman, Shawn D., Meadows, Victoria S.   +2 more
core   +1 more source

Assessing the Effect of Mineralogy and Reaction Pathways on Geological Hydrogen (H₂) Generation in Ultramafic and Mafic (Basaltic) Rocks

Hydrogen
This study evaluates the impact of mineralogy, elemental composition, and reaction pathways on hydrogen (H2) generation in seven ultramafic and mafic (basaltic) rocks. Experiments were conducted under typical low-temperature hydrothermal conditions (150 °
Abubakar Isah, Hamidreza Samouei, Esuru Rita Okoroafor   +2 more
doaj   +1 more source

Investigations of potential microbial methanogenic and carbon monoxide utilization pathways in ultra-basic reducing springs associated with present-day continental serpentinization: the Tablelands, NL, CAN

Frontiers in Microbiology, 2014
Ultra-basic reducing springs at continental sites of serpentinization act as portals into the biogeochemistry of a subsurface environment with H2 and CH4 present.
Penny Lea Morrill, William J. Brazelton, Lukas eKohl, Amanda eRietze, Sarah eMiles, Heidi eKavanagh, Matthew O. Schrenk, Susan E. Ziegler, Susan Q. Lang   +8 more
doaj   +1 more source

Growth of Self‐Assembling Tubular Structures of Magnesium Oxy/Hydroxide and Silicate Related With Seafloor Hydrothermal Systems Driven by Serpentinization

Geochemistry, Geophysics, Geosystems, 2018
Tubular structures self‐assemble from precipitating magnesium salts under the chemical garden chemobrionic growth process. Two experimental procedures, the dissolution of magnesium salt pellets and the injection of magnesium salt solutions into silicate ...
C. Ignacio Sainz‐Díaz, Elizabeth Escamilla‐Roa, Julyan H. E. Cartwright   +2 more
doaj   +1 more source

Magnetic structure of the crust [PDF]

The bibuniqueness aspect of geophysical interpretation must be constrained by geological insight to limit the range of theoretically possible models. An additional step in depth understanding of the relationship between rock magnetization and geological ...
Wasilewski, P.
core   +1 more source