Bedrock 1:200 000

Bedrock 1:200 000 is a coherent dataset covering the whole of Finland, which has been made with the generalisation of Kallioperä’s scaleless spatial data set, version 1.0. The material consists of a stone type/unit polygon level and lined planes showing injections, lines and plots. The position also includes the baseline data index presented at regional level and the quality classification of the data. The stone type/unit polygon level contains unit codes, epoch data and lithological codes according to the Finnish bedrock unit information system (FINSTRATI) as characteristic. Line levels have their own hierarchical classifications. The material is at a scale of 1:200 000, which means that the vast majority of non-scaled data have been generalised to 1:200,000 products of scale. There is no generalisation of areas with a baseline level higher than 1:200 000. The data were subject to a co-ordinate system conversion in March 2013. A conversion from the unified coordinate system of the atlas coordinate system to the ETRS-TM35FIN coordinate system using a triangular affinity transformation