The geology
of the area

Flysch is found as the host rock, a soil layer composed of sandstone and more or less calcareous clay marl. The Wienerwald and the Bisamberg form a single geological unit, separated by the Danube.

The flysch zone consists of deposits that were transported from the continental margin into the deep sea in the late Cretaceous and deposited there, which are now exposed on Kahlenberg and Bisamberg. The grapevines are rooted in these former deep-sea deposits. Notable is the slipperiness of steep slopes in the flyschzone. Flysch means "rock that tends to slip."

Loess - glacial sand: During the Ice Age, the sand was blown into the lowlands from the river terraces in the foothills of the Alps. This explains the loose storage and the large porosity of the calcareous, sandy-silty deposits. It is a good water reservoir and provides the vines with a balanced nutrient content. The loess clay is weathered, crushed and leached loess. He contains gravel grains in some places.

Gravel, sand, clay are deposits that range from the abundant marine life (huge estuary) to the silting of the lake in the Wiener Becken. Numerous fossils testify to this. A good example is the largest fossil oyster bank in the world in the close located village Stetten/Weinviertel.