Differentiated planetesimals record differing sources of sulfur in inner and outer solar system materials.

ABSTRACT: The isotope anomalies of noncarbonaceous (NC) and carbonaceous (CC) extraterrestrial materials provide a framework for tracing the distribution and accretion of matter in the early solar system. Here, we extend this framework to sulfur (S)-one of six "life-essential" volatile elements [T_C ~ 664 K]-via the mass-independent S-isotope compositions of differentiated meteorites. We observe that on average, NC and CC iron meteorites are characterized by distinct Δ³³S (Δ³³S_NC = 0.013 ± 0.003‰; Δ³³S_CC = -0.021 ± 0.009‰; 2 SE). The average Δ³⁶S of NC and CC irons are less well resolved (Δ³⁶S_NC = -0.006 ± 0.039‰; Δ³⁶S_CC = -0.101 ± 0.114‰; 2 SE), but the Δ³⁶S values of t

SUBMITTER: Heiny EA 

PROVIDER: S-EPMC12067202 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature