Formal stratigraphy in the Pleistocene of Finland

Abstract

The importance of the application of formal lithostratigraphical, biostratigraphical and chronostratigraphical procedures to the subdivision of Finnish Pleistocene sediment sequences and the need to define both regional and local stratotypes are discussed. The particular problems relating to the definition of stratotypes in areas that have been subjected to glaciation are addressed. Problems regarding nomenclature and correlation of Pleistocene sequences, largely arising from non-definition or unsatisfactory definition of stratotypes are illustrated with reference to the Saalian Stage of northern Continental Europe and some Finnish examples. Recommendations are presented to encourage and improve the selection and definition of stratotypes for Quaternary sediment sequences in Finland.

Keywords

• glacial geology
• stratigraphy
• stratigraphic units
• stratotypes
• type localities
• Pleistocene
• Finland