Late Quaternary faulting and-paleoseismicity in northern Fennoscandia, with particular reference to the Lansjärv area, northern Sweden

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Abstract
Many fault scarps, interpreted as post- or late-glacial in age, occur in northern Sweden and adjacent parts of Finland and Norway. In the Lansjärv area in northern Sweden attempts have been made to date fault displacement relative to the glacial and postglacial stratigraphy by trenching across some of these fault scarps. It is shown that the faulting occurred soon after the local deglaciation some 9000 years ago. There are no signs of movements since that time. The faulting was obviously associated with violent earthquakes because seismically induced phenomena, dating from the same period as the faulting, are frequently found in the vicinity. Numerous landslides, developed in glacial till, occur in the same region as the faults and different types of seismites (sesmically-induced sediment deformation) were found when actively sought for. It is concluded that several earthquakes of high magnitudes occurred in northern Fennoscandia during the vanishing of the inland ice sheet.