Early accretion of water and volatile elements to the inner Solar System: evidence from angrites.

ABSTRACT: Inner Solar System bodies are depleted in volatile elements relative to chondrite meteorites, yet the source(s) and mechanism(s) of volatile-element depletion and/or enrichment are poorly constrained. The timing, mechanisms and quantities of volatile elements present in the early inner Solar System have vast implications for diverse processes, from planetary differentiation to the emergence of life. We report major, trace and volatile-element contents of a glass bead derived from the D'Orbigny angrite, the hydrogen isotopic composition of this glass bead and that of coexisting olivine and silicophosphates, and the ²⁰⁷Pb-²⁰⁶Pb age of the silicophosphates, 4568 ± 20 Ma. We use volatile saturation models to demonstrate that the angrite parent body must have been a major

SUBMITTER: Sarafian AR 

PROVIDER: S-EPMC5394258 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature