Title
Nanodiamonds do not provide unique evidence for a Younger Dryas impact Nanodiamonds do not provide unique evidence for a Younger Dryas impact
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Washington, D.C. ,
Subject
Physics
Source (journal)
Proceedings of the National Academy of Sciences of the United States of America. - Washington, D.C.
Volume/pages
108(2011) :1 , p. 40-44
ISSN
0027-8424
1091-6490
ISI
000285915000012
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Microstructural, δ13C isotope and C/N ratio investigations were conducted on excavated material from the black Younger Dryas boundary in Lommel, Belgium, aiming for a characterisation of the carbon content and structures. Cubic diamond nanoparticles are found in large numbers. The larger ones with diameters around or above 10 nm often exhibit single or multiple twins. The smaller ones around 5 nm in diameter are mostly defect-free. Also larger flake-like particles, around 100 nm in lateral dimension, with a cubic diamond structure are observed as well as large carbon onion structures. The combination of these characteristics does not yield unique evidence for an exogenic impact related to the investigated layer.
E-info
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