title: Fullerenes in the 1.85-billion-year-old Sudbury impact structure.
abstract: Fullerenes (C60 and C70) have been identified by laser desorption, laser desorption post-ionization, and high-resolution electron-impact mass spectrometry in shock-produced breccias (Onaping Formation) of the Sudbury impact structure in Ontario, Canada. The C60 isotope is present at a level of a few parts per million. The fullerenes were likely synthesized within the impact plume from the carbon contained in the bolide. The oxidation of the fullerenes during the 1.85 billion years of exposure was apparently prevented by the presence of sulfur in the form of sulfide-silicate complexes associated with the fullerenes.
authors.affiliation: Scripps Institution of Oceanography, University of California at San Diego, La Jolla 92093-0212B, USA.
authors.forename: L
authors.initials: L
authors.lastname: Becker
authors.forename: J L
authors.initials: JL
authors.lastname: Bada
authors.forename: R E
authors.initials: RE
authors.lastname: Winans
authors.forename: J E
authors.initials: JE
authors.lastname: Hunt
authors.forename: T E
authors.initials: TE
authors.lastname: Bunch
authors.forename: B M
authors.initials: BM
authors.lastname: French
mesh_terms: D002244:Carbon / Q000032:analysis*; D037741:Fullerenes; D019015:Geologic Sediments / Q000032:analysis* / Q000737:chemistry; D019110:Meteoroids; D009864:Ontario; D017640:Silicates / Q000032:analysis; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013440:Sulfides / Q000032:analysis
chemical_list: D037741:Fullerenes; D017640:Silicates; D013440:Sulfides; C069836:fullerene C70; D002244:Carbon; C069837:fullerene C60