Skip to Main content Skip to Navigation
Journal articles

Multiple carriers of Q noble gases in primitive meteorites

Abstract : The main carrier of primordial heavy noble gases in chondrites is thought to be an organic phase, known as phase Q, whose precise characterization has resisted decades of investigation. Indirect techniques have revealed that phase Q might be composed of two subphases, one of them associated with sulfide. Here we provide experimental evidence that noble gases trapped within meteoritic sulfides present chemically and thermally driven behavior patterns that are similar to Q gases. We therefore suggest that phase Q is likely composed of two subcomponents: carbonaceous phases and sulfides. In situ decay of iodine at concentration levels consistent with those reported for meteoritic sulfides can reproduce the 129Xe excess observed for Q gases relative to fractionated solar wind. We suggest that the Q‐bearing sulfides formed at high temperature and could have recorded the conditions that prevailed in the chondrule‐forming region(s).
Complete list of metadata
Contributor : Crpg Ul Connect in order to contact the contributor
Submitted on : Friday, August 13, 2021 - 11:34:23 AM
Last modification on : Tuesday, October 19, 2021 - 7:01:42 PM
Long-term archiving on: : Sunday, November 14, 2021 - 6:07:36 PM


Publisher files allowed on an open archive






Yves Marrocchi, Guillaume Avice, Nicolas Estrade. Multiple carriers of Q noble gases in primitive meteorites. Geophysical Research Letters, American Geophysical Union, 2015, 42 (7), pp.2093 - 2099. ⟨10.1002/2015GL063198⟩. ⟨hal-01770575⟩



Record views


Files downloads