A5062591945- Hydrocarbon exploration and reservoir analysis
- Geological and Geochemical Analysis
- Astro and Planetary Science
- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Isotope Analysis in Ecology
- Planetary Science and Exploration
- earthquake and tectonic studies
- Groundwater and Isotope Geochemistry
- Hydraulic Fracturing and Reservoir Analysis
- CO2 Sequestration and Geologic Interactions
- Geochemistry and Elemental Analysis
- Geological and Geophysical Studies
- Astrophysics and Star Formation Studies
- Marine and coastal ecosystems
- Petroleum Processing and Analysis
- Molecular Spectroscopy and Structure
- Enhanced Oil Recovery Techniques
- Phase Equilibria and Thermodynamics
- NMR spectroscopy and applications
- High-pressure geophysics and materials
- Atmospheric Ozone and Climate
GNS Science
2023-2024
Centre de Recherches Pétrographiques et Géochimiques
1994-2023
Université de Lorraine
1997-2023
Centre National de la Recherche Scientifique
1997-2023
University of Oxford
2016-2021
Abstract Carbon capture and storage (CCS) is a key technology to mitigate the environmental impact of carbon dioxide (CO 2 ) emissions. An understanding potential trapping mechanisms required provide confidence in safe secure CO geological sequestration 1,2 . Depleted hydrocarbon reservoirs have substantial 1 , 3 numerous undergone injection as means enhanced oil recovery -EOR), providing an opportunity evaluate (bio)geochemical behaviour injected carbon. Here we present noble gas, stable...
The near-Earth carbonaceous asteroid (162173) Ryugu is expected to contain volatile chemical species that could provide information on the origin of Earth's volatiles. Samples were retrieved by Hayabusa2 spacecraft. We measured noble gas and nitrogen isotopes in samples found they are dominated presolar primordial components, incorporated during Solar System formation. Noble concentrations higher than those Ivuna-type (CI) chondrite meteorites. Several host phases isotopically distinct have...
Identifying the origin of noble gases in Earth's mantle can provide crucial constraints on source and timing volatile (C, N, H2O, gases, etc.) delivery to Earth. It remains unclear whether early Earth was able directly capture retain volatiles throughout accretion or it accreted anhydrously subsequently acquired through later additions chondritic material. Here, we report high-precision gas isotopic data from volcanic emanating from, around, Yellowstone caldera (Wyoming, United States). We...
The terrestrial carbon to nitrogen ratio is a key geochemical parameter that can provide information on the nature of Earth's precursors, accretion/differentiation processes our planet, as well volatile budget Earth. In principle, this be determined from analysis elements trapped in mantle-derived rocks like mid-ocean ridge basalts (MORB), corrected for fractional degassing during eruption. However, correction critical and previous attempts have adopted different approaches which led...
The age of iron meteorites implies that accretion protoplanets began during the first millions years solar system. Due to heat generated by 26Al decay, many early were fully differentiated with an igneous crust produced cooling a magma ocean and segregation at depth metallic core. formation nature primordial stages melting is poorly understood, due in part scarcity available samples. newly discovered meteorite Erg Chech 002 (EC 002) originates from one such primitive has andesite bulk...
Iron is an irreplaceable component of proteins and enzyme systems required for life. This need iron a well-characterized evolutionary mechanism genetic selection. However, there limited consideration how bioavailability, initially determined by planetary accretion but fluctuating considerably at global scale over geological time frames, has shaped the biosphere. We describe influences on habitability from formation events >4 Gya initiation biochemistry geochemistry through oxygenation...
The Hayabusa2 spacecraft returned to Earth from the asteroid 162173 Ryugu on 6 December 2020. One day after recovery, gas species retained in sample container were extracted and measured on-site stored collection bottles. consists of helium neon with an extraterrestrial 3 He/ 4 He 20 Ne/ 22 Ne ratios, along some contaminant terrestrial atmospheric gases. A mixture solar Earth’s is best explanation for composition. Fragmentation grains within discussed basis estimated amount indigenous size...
Mantle-derived noble gases in volcanic are powerful tracers of terrestrial volatile evolution, as they contain mixtures both primordial (from Earth’s accretion) and secondary (e.g., radiogenic) isotope signals that characterize the composition deep Earth. However, emitted through subaerial hydrothermal systems also contributions from shallow reservoirs (groundwater, crust, atmosphere). Deconvolving source is critical for robust interpretations mantle-derived signals. Here, we use a novel...
Carbonaceous chondrites are considered to have originated from C-type asteroids and represent some of the most primitive material in our solar system. Furthermore, since carbonaceous can contain significant quantities volatile elements, they may played a crucial role supplying volatiles organic Earth other inner system bodies. However, major challenge unravelling composition chondritic meteorites is distinguishing between which features were inherited parent body, what be secondary feature...
Geochemical characteristics in subsurface fluid systems provide a wealth of information about sources, migration, and storage conditions. Determining the extent interaction (aquifer-hydrocarbon connectivity) is important for oil gas production waste applications, but not tractable using traditional seismic methods. Furthermore, residence time fluids critical such can vary from tens thousands to billions years. Our understanding transport length scales multiphase systems, while equally...
Abstract Petroleum systems represent complex multiphase subsurface environments. The properties of the noble gases as conservative physical tracers allow them to be used gain insight into behaviour occurring within hydrocarbon systems. This can better understand mechanisms migration, residence time fluids, and measurement scale fluid system involved in transport trapping phase. derive from different sources with distinct isotopic compositions, allowing resolved any crustal fluid. We discuss...
Noble gases are chemically inert and, as such, act unique tracers of physical processes over geological timescales.The isotopic composition atmospheric xenon, the heaviest stable noble gas, evolved following mass-dependent fractionation throughout Hadean and Archaean aeons.This evolution appears to have ceased between 2.5 2.1 Ga, around time Great Oxidation Event (GOE).The coincidental halting Xe may provide further insights into mechanisms affecting atmosphere at Archaean-Proterozoic...
Abstract Comets represent some of the most pristine bodies in our solar system and can provide a unique insight into chemical makeup early system. Due to their icy volatile-rich nature, they may have played an important role delivering volatile elements organic material Earth. Understanding how comets form therefore wealth information on composition evolved from presolar molecular cloud up until formation terrestrial planets. Because noble gases are chemically inert distinct condensation...