Dendrochronological research on subfossil, wetland oak logs in deposits from the Rhine, Moselle, and Meuse.

Beneath their vast sedimentary deposits, which have accumulated over thousands of years, many of central Europe's rivers contain an exceptional number of subfossil logs from former flood plain forests.The oldest of these huge logs have been lying well protected in our river-bed deposits under several meters of sediment for up to 10.000 years. Studies of these post-glacial subfossil log deposits contribute an important part to our knowledge both of the past and to Quaternary studies. The tree-ring widths and anatomical wood characteristics help provide interpretations to many questions on paleoecological research questions.