A5030867163- Astro and Planetary Science
- Planetary Science and Exploration
- Geological and Geochemical Analysis
- Isotope Analysis in Ecology
- earthquake and tectonic studies
- Geochemistry and Elemental Analysis
- Astronomical and nuclear sciences
- Geology and Paleoclimatology Research
- High-pressure geophysics and materials
- Geomagnetism and Paleomagnetism Studies
- Space Exploration and Technology
- Stellar, planetary, and galactic studies
- Silicon Effects in Agriculture
- Archaeology and ancient environmental studies
- Paleontology and Stratigraphy of Fossils
- Marine and environmental studies
- Recycling and Waste Management Techniques
- Methane Hydrates and Related Phenomena
- Spacecraft and Cryogenic Technologies
- Geochemistry and Geochronology of Asian Mineral Deposits
- Cassava research and cyanide
- Space Science and Extraterrestrial Life
- Recycling and utilization of industrial and municipal waste in materials production
- Geological and Geophysical Studies Worldwide
- Solar and Space Plasma Dynamics
Université Libre de Bruxelles
2018-2024
Johnson Space Center
2019-2024
Jacobs (United States)
2018-2021
National Aeronautics and Space Administration
2019
University of Oxford
2010-2017
University of Houston
2014-2015
Institute of Astronomy
2011
University of Cambridge
2011
The elemental and isotopic compositions of the rare earth elements (REE) reveal critical information about physicochemical dynamics solar nebula. Cerium (Ce) is most abundant REE in Solar System. It has recently received renewed attention due to decay 138La 138Ce, but its stable composition still requires a better comprehension. Here, we report Ce (142Ce/140Ce, expressed as δ142Ce) 18 well-characterized non-carbonaceous chondrites including 11 enstatite (EH EL) 6 ordinary (H, L, LL)...
We report the mineralogy, petrology, major, minor and trace element geochemistry, O Si isotopes of a complex compound chondrule from Allende meteorite. The contains zones refractory (Ca, Al-rich) regions along with more similar to ferromagnesian chondrules. bulk silicon isotopic composition object is δ30Si = –0.71 ± 0.03‰. oxygen different phases within chondrules fall line range Δ17O – 12.5 –2‰. Rare earth abundances are enriched compared chondritic levels by up 15× CI, show nebular...