David V. Bekaert
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Fluid inclusions: tiny windows into global paleo-environments Open
Geochemical traces of past environments are preserved in the geological record. Although secondary processes often erase this information, fluid inclusions in hydrothermal minerals act as time capsules for reconstructing the evolution of E…
Noble gases and nitrogen in material from asteroid Bennu Open
We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotop…
Characterization of the HIMU Mantle Source from Noble Gas Isotopes in Volcanic Gas Emissions in São Tomé (Cameroon Volcanic Line) Open
The source of volcanism in the Cameroon volcanic line remains unresolved. To better constrain the mantle components involved, we measure light noble gas (He-Ne-Ar) isotopes and, for the first time, heavy noble gas (Kr-Xe) isotopes in mantl…
View article: Past aquifer responses to climate recorded by fossil groundwater
Past aquifer responses to climate recorded by fossil groundwater Open
Billions of people rely upon groundwater for drinking water and agriculture, yet predicting how climate change may affect aquifer storage remains challenging. To gain insight beyond the short historical record, we reconstruct changes in gr…
View article: Passive degassing of lithospheric volatiles recorded in shallow young groundwater
Passive degassing of lithospheric volatiles recorded in shallow young groundwater Open
The development of life on Earth has been enabled by its volatile-rich surface. The volatile budget of Earth’s surface is controlled by the balance between ingassing (for example, via subduction) and outgassing (for example, through magmat…
View article: The extraterrestrial dust accretion rate on Earth at Dome C, Antarctica: a fresh look with 3He
The extraterrestrial dust accretion rate on Earth at Dome C, Antarctica: a fresh look with 3He Open
International audience
View article: Noble Gas Isotopes and Nitrogen Isotopologues Reveal Deep Sources and Subsurface Fractionation in Yellowstone Gases
Noble Gas Isotopes and Nitrogen Isotopologues Reveal Deep Sources and Subsurface Fractionation in Yellowstone Gases Open
Nitrogen plays a critical role in maintaining Earth's hospitable surface environment over geological time. Despite our atmosphere being dominated by nitrogen, our understanding of how nitrogen was delivered to Earth and how subsequent plan…
Paleoclimate reconstructions based on European pollen data since the Last Glacial Maximum: probabilistic inversion, megabiomization, and multi-method approach Open
            Pollen data are among the most abundant and spatially-temporally resolved proxies for quantitatively reconstructing European climate evolution since the Last Glacial Maximum (LGM, ~19-26 kyr, [1]).…
View article: Uncovering the xenon isotope composition of continental rift magmas: Insight from analysis of geothermal gases at Homa Hills, Kenya
Uncovering the xenon isotope composition of continental rift magmas: Insight from analysis of geothermal gases at Homa Hills, Kenya Open
We investigated geothermal gases from Homa Hills, a carbonatitic complex situated along an adjacent branch of the Kenyan rift system, using neon, argon, krypton, xenon and nitrogen isotopes. Large quantities of gas were sampled in Giggenba…
Deep Nitrogen Fluxes and Sources Constrained by Arc Lava Phenocrysts Open
Nitrogen (N) dominates Earth's atmosphere (78% N 2 ) but occurs in trace abundances in silicate minerals, making it a sensitive tracer of recycled surface materials into the mantle. The mechanisms controlling N transfer between terrestrial…
Subsurface microbial community structure shifts along the geological features of the Central American Volcanic Arc Open
Subduction of the Cocos and Nazca oceanic plates beneath the Caribbean plate drives the upward movement of deep fluids enriched in carbon, nitrogen, sulfur, and iron along the Central American Volcanic Arc (CAVA). These compounds fuel dive…
The low primordial heavy noble gas and 244Pu-derived Xe contents of Earth's convecting mantle Open
International audience
Subsurface microbial community structure shifts along the geological features of the Central American Volcanic Arc Open
Subduction of the Cocos and Nazca oceanic plates beneath the Caribbean plate drives the upward movement of deep fluids enriched in carbon, nitrogen, sulfur, and iron along the Central American Volcanic Arc (CAVA). These compounds fuel dive…
A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part B: Mantle source heterogeneities Open
All data appearing in the manuscript and any supplementary documents, figures, or tables of the paper "A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part B: Mantle source heterogeneities…
A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part B: Mantle source heterogeneities Open
All data appearing in the manuscript and any supplementary documents, figures, or tables of the paper "A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part B: Mantle source heterogeneities…
A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part A: Degassing processes Open
All data appearing in the manuscript and any supplementary documents, figures, or tables of the paper "A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part A: Degassing processes" at Geoch…
A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part A: Degassing processes Open
All data appearing in the manuscript and any supplementary documents, figures, or tables of the paper "A carbon, nitrogen, and multi-isotope study of basalt glasses near 14°N on the Mid-Atlantic Ridge. Part A: Degassing processes" at Geoch…
Primordial and 244Pu-derived xenon missing from Earth's convecting mantle Open
Mantle-derived noble gases are exceptional recorders of the history of planetary volatile elements (C, N, water), which are key to the development of life on Earth1,2. For example, the relative proportions of 129Xe derived from radioactive…
Ultrahigh-precision noble gas isotope analyses reveal pervasive subsurface fractionation in hydrothermal systems Open
Mantle-derived noble gases in volcanic gases are powerful tracers of terrestrial volatile evolution, as they contain mixtures of both primordial (from Earth’s accretion) and secondary (e.g., radiogenic) isotope signals that characterize th…