The writer suggests that the term varved should be restricted to laminated and graded sediments (both inorganic and organic) of annual, or seasonal (composed of a winter and a summer layer) origin where such nature can be established. He has shown by palynological methods the annual origin of varved clays in the glacial lake Barlow-Ojibway basin in northern Ontario, where a total of 2027 varves has been counted by Antevs and Hughes. In this case the varve counts can be used as a time scale for certain events. Laminated sediments of other than annual origin and those resembling varves only in appearance should be clearly distinguished from the true varved sediments.

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