Isabelle Moretti
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View article: Natural Hydrogen Generation from Phanerozoic Sedimentary Siderite
Natural Hydrogen Generation from Phanerozoic Sedimentary Siderite Open
Siderite (FeCO3) is an iron carbonate present in Archean and Neoproterozoic Banded Iron Formations (BIFs) as well as in much more recent sedimentary basins. Due to its high iron content, it could be part of H2 systems, and we have quantifi…
View article: Low‐Temperature (100°C–300°C) Magnetite Production in Variably Serpentinized Lherzolites
Low‐Temperature (100°C–300°C) Magnetite Production in Variably Serpentinized Lherzolites Open
The study of the serpentinization process in ultramafic rocks has been revived in recent years in response to the problems of natural hydrogen generation. Serpentinization results in the formation of magnetite, which is often observed in t…
View article: Geological and geochemical approach to natural hydrogen exploration in the Northern Apennines, Italy
Geological and geochemical approach to natural hydrogen exploration in the Northern Apennines, Italy Open
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View article: H2 Transport in Sedimentary Basin
H2 Transport in Sedimentary Basin Open
Natural hydrogen is generated by fairly deep processes and/or in low-permeability rocks. In such contexts, fluids circulate mainly through the network of faults and fractures. However, hydrogen flows from these hydrogen-generating layers c…
View article: Natural Hydrogen in Uruguay: Catalog of H2-Generating Rocks, Prospective Exploration Areas, and Potential Systems
Natural Hydrogen in Uruguay: Catalog of H2-Generating Rocks, Prospective Exploration Areas, and Potential Systems Open
The increasing demand for carbon-free energy in recent years has positioned hydrogen as a viable option. However, its current production remains largely dependent on carbon-emitting sources. In this context, natural hydrogen, generated thr…
View article: Natural H2 Transfer in Soil: Insights from Soil Gas Measurements at Varying Depths
Natural H2 Transfer in Soil: Insights from Soil Gas Measurements at Varying Depths Open
The exploration of natural H2 is beginning in several countries. One of the most widely used methods for detecting promising areas is to measure the H2 percentage of the air contained in soils. All data show temporal and spatial variabilit…
View article: Natural hydrogen system evaluation in the São Francisco Basin (Brazil)
Natural hydrogen system evaluation in the São Francisco Basin (Brazil) Open
The São Francisco Basin (SFB), a double foreland bordered by two Neoproterozoic belts, hosts a proven hydrogen (H 2 ) system, demonstrated by high concentrations in boreholes and numerous surface H 2 emissions, some long-term monitored. Ho…
View article: Water budget in flat <i>vs.</i> steep subduction: implication for volcanism and potential for H<sub>2</sub> production
Water budget in flat <i>vs.</i> steep subduction: implication for volcanism and potential for H<sub>2</sub> production Open
In this study, we model the processes of (de)hydration and melting within subduction zones using a thermo-mechanical modeling approach. Multiple 2D simulations are conducted to investigate how the subduction angle influences the water budg…
View article: Natural H2 Emissions in Colombian Ophiolites: First Findings
Natural H2 Emissions in Colombian Ophiolites: First Findings Open
The exploration of natural H2 or white hydrogen has started in various geological settings. Ophiolitic nappes are already recognized as one of the promising contexts. In South America, the only data available so far concerns the Archean ir…
View article: Editorial: Natural hydrogen in different contexts: geological, cosmochemical, and biological
Editorial: Natural hydrogen in different contexts: geological, cosmochemical, and biological Open
EDITORIAL article Front. Earth Sci., 12 October 2023Sec. Geochemistry Volume 11 - 2023 | https://doi.org/10.3389/feart.2023.1296646
View article: Natural hydrogen seeps or salt lakes: how to make a difference? Grass Patch example, Western Australia
Natural hydrogen seeps or salt lakes: how to make a difference? Grass Patch example, Western Australia Open
Natural hydrogen exploration is picking up around the world while the geogenic hydrogen system is still a Frontier science. Natural hydrogen seepage can occur in the form of a sub-circular surface feature named by some authors “fairy circl…
View article: The place of natural hydrogen in the energy transition: A position paper
The place of natural hydrogen in the energy transition: A position paper Open
Natural Hydrogen is a new, clean and low-carbon source of hydrogen that is produced by the Earth, and can migrate and accumulate in geological reservoirs. Its exploration has begun in many countries and its price could be significantly low…
View article: Reassessing the role of magnetite during natural hydrogen generation
Reassessing the role of magnetite during natural hydrogen generation Open
Interactions between water and ferrous rocks are known to generate natural H 2 in oceanic and continental domains via the oxidation of iron. Such generation has been mainly investigated through the alteration of Fe 2+ -silicate and some Fe…
View article: Subduction and Hydrogen Release: The Case of Bolivian Altiplano
Subduction and Hydrogen Release: The Case of Bolivian Altiplano Open
Natural hydrogen is known to be generated in the crust by water/rock interactions, especially the oxidation of iron-rich rock or radiolysis. However, other sources, especially deeper ones, exist. In the context of subduction, the dehydrati…
View article: Early onshore basaltic alteration and its natural hydrogen potential in the Asal–Ghoubbet rift, Republic of Djibouti.
Early onshore basaltic alteration and its natural hydrogen potential in the Asal–Ghoubbet rift, Republic of Djibouti. Open
The East African Rift (EAR) is a large opening system that allows the observation of all stages of rift evolution from continental opening in the south to oceanization in the north (Ethiopia-Djibouti). Also, the Asal–Ghoubbet active …
View article: Can clumped isotopes help us constrain the origin of H<sub>2</sub>?
Can clumped isotopes help us constrain the origin of H<sub>2</sub>? Open
Dihydrogen (H 2 ) is becoming a key molecule for the energy transition.Many processes can lead to the formation of H 2 such as methane reforming, water electrolysis in the industry or hydrothermal alteration, radiolysis, volcanism and micr…
View article: Natural hydrogen potential and basaltic alteration in the Asal–Ghoubbet rift, Republic of Djibouti
Natural hydrogen potential and basaltic alteration in the Asal–Ghoubbet rift, Republic of Djibouti Open
The Asal–Ghoubbet active rift in the Republic of Djibouti is a site of interest for geothermal energy and natural hydrogen, and previous studies have indicated that dihydrogen (H 2 ) emanates from this rift. However, the well-known serpent…
View article: Natural H<sub>2</sub> exploration: tools and workflows to characterize a play
Natural H<sub>2</sub> exploration: tools and workflows to characterize a play Open
Natural dihydrogen (H 2 ) exploration is now active in various countries, but tools and workflows that help to characterize prospective zones are still poorly defined. This review paper is dedicated to share our experience in characterizin…
View article: Can Weathering of Banded Iron Formations Generate Natural Hydrogen? Evidence from Australia, Brazil and South Africa
Can Weathering of Banded Iron Formations Generate Natural Hydrogen? Evidence from Australia, Brazil and South Africa Open
Oxidation of iron-rich rock is known to generate H2 in oceanic as well as in continental domains. Here we tested the possibility of H2 generation as the result of weathering of banded iron formations (BIF). The BIF constitute more than 60%…
View article: Geology and construction: survey of archaeological sites and their natural environments (Gulf of Corinth, Greece)
Geology and construction: survey of archaeological sites and their natural environments (Gulf of Corinth, Greece) Open
This study attempts to demonstrate how Greek builders exploited their geological environment during the Archaic to Hellenistic periods. Four major sites in the eastern part of the Gulf of Corinth are compared: the old city of Corinth, the …