Fullerenes in the cretaceous-tertiary boundary layer.
Science
; 265(5172): 645-7, 1994 Jul 29.
Article
en En
| MEDLINE
| ID: mdl-17752762
High-pressure liquid chromatography with ultraviolet-visible spectral analysis of toluene extracts of samples from two Cretaceous-Tertiary (K-T) boundary sites in New Zealand has revealed the presence of C(60) at concentrations of 0.1 to 0.2 parts per million of the associated soot. This technique verified also that fullerenes are produced in similar amounts in the soots of common flames under ambient atmospheric conditions. Therefore, the C(60) in the K-T boundary layer may have originated in the extensive wildfires that were associated with the cataclysmic impact event that terminated the Mezozoic era about 65 million years ago.
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MEDLINE
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En
Revista:
Science
Año:
1994
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Article
Pais de publicación:
Estados Unidos