VolatileOrigin · Insights into Earth’s volatile origin from krypton and xenon isotopic and elemental analyses of meteorites and mantle-derived samples
„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“
- Период
- 2021-11-01 → 2024-04-01
- Финансиране от ЕС
- 203 149 €
- Участници
- 1
- Схема
- MSCA-IF
Линиите свързват координатора с партньорите.
Накратко на български
Изотопите на криптон и ксенон в метеорити, диаманти и базалти помагат за проследяване на летливите елементи в земната кора. Анализът им помага да се разбере произходът на веществата, които правят планетата Земя подходяща за живот.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Insights into Earth’s volatile origin from krypton and xenon isotopic and elemental analyses of meteorites and mantle-derived samples
The presence of volatile elements such as carbon, nitrogen, water, noble gases, on terrestrial planets is a requirement for planet habitability, yet their origin is still highly debated. Noble gases are invaluable tracers of volatile sources due to their inertness, in particular their non-radiogenic isotopes have kept remnant signatures of planetary accretion. Krypton and xenon are mighty tools to distinguish between chondritic and solar volatile sources due to the distinct isotopic compositions of these end-members. However, the heavy noble gas (Kr, Xe) compositions of the Earth’s mantle are poorly determined. Hence, the Earth’s mantle volatile history remains largely unknown. The objectives of this project are to precisely measure the non-radiogenic Kr and Xe isotopes in mantle-derived samples, including mid-ocean ridge basalts and diamonds, and in meteorites of different types in order to better understand Earth’s volatile origin. Training objectives of the project are for the researcher to improve their skills related to project management, communication and mentoring. During this project, two technical developments have been carried out in the noble gas laboratory: the separation of Kr from Ar and Xe using two charcoal traps, allowing to measure Kr and Xe separately in the mass spectrometer, and development of a stainless steel piston crusher for terrestrial sample analyses. Several chondrites of different types have been measured to determine their trapped Kr and Xe isotopic compositions. The researcher was able to be trained on leadership and project management skills, as well as communication skills by presenting her work to major international conferences. The researcher was also involved in the co-supervision of one PhD student, improving her mentoring skills. The researcher also developed networking skills by co-organizing the eighth noble gas workshop, Developments in Noble Gas Understanding and Expertise, as well as two scientific sessions at Goldschmidt 2022 and 2023.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
The presence of volatile elements such as carbon, nitrogen, water, noble gases, on terrestrial planets is a requirement for planet habitability, yet their origin is still highly debated. Noble gases are invaluable tracers of volatile sources due to their inertness, in particular their non-radiogenic isotopes have kept remnant signatures of planetary accretion. Krypton and xenon are mighty tools to distinguish between chondritic and solar volatile sources due to the distinct isotopic compositions of these end-members. However, the heavy noble gas (Kr, Xe) compositions of the Earth’s mantle is poorly determined. Hence, the Earth’s mantle volatile history remains largely unknown. The objectives of this project are to precisely measure the non-radiogenic Kr and Xe isotopes in mantle-derived samples, including mid-ocean ridge basalts and diamonds, and in meteorites of different types in order to better understand Earth’s volatile origin. Determining the compositions of mid-ocean ridge and diamond samples will allow to characterize the extent of mantle Kr and Xe heterogeneities, introduced through progressive atmospheric noble gas recycling via subduction, and, hence to identify the source(s) of these volatiles in the mantle. Precise bulk meteorite data for the non-radiogenic Kr and Xe isotopes are incomplete and will be crucial in our understanding of the measured mantle compositions to fingerprint the volatile sources. This project will use a novel protocol for the specific measurements of these isotopes in mantle-derived samples associated with noble gas mass spectrometry. The MSCA fellowship represents a unique opportunity for me to learn new analytical skills in cosmochemistry, to improve my soft skills and to secure my fruitful reintegration in Europe. I will transfer to the host lab my expertise of mantle geochemistry. On the whole, this project will strengthen my scientific independence, taking me closer to achieve an outstanding academic position in Europe.
Оригинален текст от CORDIS (на английски).
Участници
- EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH · ZuerichКоординаторШвейцария
Връзки
Данни: CORDIS, © Европейски съюз