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dc.contributor.authorSpringmann, Alessondra
dc.contributor.authorLauretta, Dante S.
dc.contributor.authorKlaue, Bjoern
dc.contributor.authorGoreva, Yulia S.
dc.contributor.authorBlum, Joel D.
dc.contributor.authorAndronikov, Alexandre
dc.contributor.authorStekloff, Jordan K.
dc.date.accessioned2019-06-25T23:48:14Z
dc.date.available2019-06-25T23:48:14Z
dc.date.issued2019-05-19
dc.identifier.citationSpringmann, Alessondra, Dante S. Lauretta, Bjoern Klaue, Yulia S. Goreva, Joel D. Blum, Alexandre Andronikov, and Jordan K. Steckloff. "Thermal Alteration of Labile Elements in Carbonaceous Chondrites." Icarus (2019).en_US
dc.identifier.issn0019-1035
dc.identifier.doi10.1016/j.icarus.2018.12.022
dc.identifier.urihttp://hdl.handle.net/10150/633026
dc.description.abstractCarbonaceous 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.en_US
dc.description.sponsorshipThis work was supported by NASA grants NAG5-11355 (DSL) and NC01- 109 (JDB) and by NASA contract NNM10AA11C issued through the New Frontiers Program (AS and DSL).en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0019103518303427en_US
dc.relation.urlhttps://arxiv.org/abs/1810.04154en_US
dc.relation.urlhttps://www.sciencedirect.com/science/article/abs/pii/S0019103518303427?via%3Dihuben_US
dc.rights© 2018 Elsevier Inc. All rights reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectChondrites (Meteorites) -- Analysisen_US
dc.subjectOSIRIS-RExen_US
dc.subjectAsteroidsen_US
dc.subject(101955) Bennuen_US
dc.subject(3200) Phaethonen_US
dc.subjectasteroid miningen_US
dc.subjectin situ resource utilizationen_US
dc.subjectcarbonaceous chondritesen_US
dc.subjectthermal alterationen_US
dc.subjectlabile elementsen_US
dc.titleThermal alteration of labile elements in carbonaceous chondritesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben_US
dc.identifier.journalIcarusen_US
dc.description.note24 month embargo; available online 10 December 2018.en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.source.journaltitleIcarus
dc.source.volume324
dc.source.beginpage104
dc.source.endpage119


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