Hällristningar under vatten?

Kommentarer till en studie över landskapsutveckling och strandförskjutningsförlopp i Tanum

Abstract

”Rock carvings under water? Comments on a study of the landscape development and shoreline displacement in Tanum”: A pollen analytical investigation with the aim to reconstruct the environment in the Tanum area during the Bronze and Iron Ages, has reached the conclusion that the shore in the area was at 25 meters above present day sea level until 500 BC (Svedhage 1997). If this is correct, a major part of the rock carvings in the area must be younger than the Bronze Age, the previously assumed age. Here, a critical evaluation of the Svedhage investigation is presented, pointing out that the dating of the layers in the lake Grundevatten in Tanum, central in the Svedhage argumentation, can not be maintained. This as the dating is not based on 14C datings of the sediment in the lake but on datings transferred from two other localities 140 and 180 km away. New investigations to determine
the Bronze Age shore line are proposed and until such have confirmed the conclusions drawn by Svedhage they must be regarded as highly uncertain.