Archived Content Notice: This publication is provided for reference, research or recordkeeping purposes. It is not
subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. Please contact us to
request a format other than those available.
The age of the Popigai impact event and its relation to events at the Eocene/Oligocene boundary; Bottomley, R; Grieve, R;
York, D; Masaitis, V. Nature vol. 388, 1997 p. 365-368,
https://doi.org/10.1038/41073
Open Access (GSC Cont.# 1996430)