Abstract
The Swedish Varve Chronology initiated by De Geer, and revised and updated by several successors, offers the possibility to test the synchroneity of deformations and turbidites. There are many examples of synchronous deformations over wide areas. This calls for an explanation in terms of ground shaking by high-magnitude earthquakes. Several well-known varve events previously interpreted as “drainage varves” are shown here to be seismically induced marker-beds. Therefore they should be renamed as seismites. Some are, in fact, formed by tsunami waves, and should be termed tsunamites. By this, the Swedish Time Scale becomes a very useful archive for the identification and dating of palaeoseismic events.
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