The Michael J. Keen Medal is normally awarded annually by the Marine Geosciences Division of the Geological Association of Canada to a scientist who has made a significant contribution to the field of marine or lacustrine geoscience. Recipients may be a Canadian or a non-Canadian who has made a contribution in Canada or with a distinctively Canadian flavor. The medal will be awarded to a male or female scientist, but in the spirit of equity, will give special, but not exclusive, consideration to the achievements by distinguished or outstanding female scientist. Nominations for the Michael J. Keen Medal must be made by at least 5 sponsors, 3 of whom must be members of the Marine Geosciences Divisions.