Flint raw materials of prehistoric Finland: rock types, surface textures and microfossils

Sisukord:Geoloogiline ülevaade Soome kiviaja arheoloogilistest leidudest. During the Stone Age, at least three different types of flinty rock were used as raw material for the making of tools and weapons in the area comprising present-day Finland. Each rock type has a diagnostic silica-mineral composition, matrix material grain size and a microfossils content, which unambiguously indicates the geological age of the original rock as well as its probable provenance.