Book review

In 76 pages the authors have put together a wealth of information on the development of the drainage-system between the Harz region in the West and the river Oder in the East during the Quaternary. This is done by means of heavy mineral investigations in the size-fraction 0.1-0.2 mm of about 330 samples taken from boreholes as well as from exposures. Where possible the gravel composition is also used for interpretation. The results are grouped by means of triangle diagrams, which enable a good identification of each river system. The age of the deposits is also taken into consideration.