Nanometre-size diamonds in the Cretaceous/Tertiary boundary clay of Alberta

Details Nanometre-size diamonds in the Cretaceous/Tertiary boundary clay of Alberta Nanometre-size diamonds in the Cretaceous/Tertiary boundary clay of Alberta

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.352..708c&link_type=abstract

Nature (ISSN 0028-0836), vol. 352, Aug. 22, 1991, p. 708, 709.

Physics

22

Chondrites, Cretaceous-Tertiary Boundary, Diamonds, Meteorite Collisions, Clays, Electron Diffraction, Iridium

Scientific paper

Evidence is presented that the Cretaceous/Tertiary boundary clay of the
Red Deer Valley of Alberta contains diamonds, which strengthens the case
for an extraterrestrial impact at the end of the Cretaceous. The
diamond/iridium ratio is close to the value found in type C2 chondritic
meteorites.

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