Thermal Alteration of Labile Elements in Carbonaceous Chondrites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000010" target="_blank" >RIV/00025798:_____/19:00000010 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0019103518303427" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0019103518303427</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2018.12.022" target="_blank" >10.1016/j.icarus.2018.12.022</a>
Alternative languages
Result language
angličtina
Original language name
Thermal Alteration of Labile Elements in Carbonaceous Chondrites
Original language description
Carbonaceous chondrite meteorites are some of the oldest Solar System planetary materials available for study. The CI group has bulk abundances of elements similar to those of the solar photosphere. Of particular interest in carbonaceous chondrite compositions are labile elements, which vaporize and mobilize efficiently during post accretionary parent-body heating events. Thus, they can record low-temperature alteration events throughout asteroid evolution. However, the precise nature of labile-element mobilization in planetary materials is unknown. Here we characterize the thermally induced movements of the labile elements S, As, Se, Te, Cd, Sb, and Hg in carbonaceous chondrites by conducting experimental simulations of volatile-element mobilization during thermal metamorphism. This process results in appreciable loss of some elements at temperatures as low as 500 K. This work builds on previous laboratory heating experiments on primitive meteorites and shows the sensitivity of chondrite compositions to excursions in temperature. Elements such as S and Hg have the most active response to temperature across different meteorite groups. Labile element mobilization in primitive meteorites is essential for quantifying elemental fractionation that occurred on asteroids early in Solar System history. This work is relevant to maintaining a pristine sample from asteroid (101955) Bennu from the OSIRIS-REx mission and constraining the past orbital history of Bennu. Additionally, we discuss thermal effects on surface processes of near-Earth asteroids, including the thermal history of 'rock comets' such as (3200) Phaethon. This work is also critical for constraining the concentrations of contaminants in vaporized water extracted from asteroid regolith as part of future in situ resource utilization for sustained robotic and human space exploration.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA18-15498S" target="_blank" >GA18-15498S: Calcium and magnesium isotope mass balances in acidified small catchments with contrasting lithologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Icarus. International Journal Of Solar System Studies
ISSN
0019-1035
e-ISSN
—
Volume of the periodical
324
Issue of the periodical within the volume
May
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
104-119
UT code for WoS article
000466057500007
EID of the result in the Scopus database
2-s2.0-85062046744