The Tulln Basin (german: Tullnerfeld) is a

sedimentary basin Sedimentary basins are region-scale depressions of the Earth's crust where subsidence has occurred and a thick sequence of sediments have accumulated to form a large three-dimensional body of sedimentary rock. They form when long-term subsiden ...

north to the

Eastern Alps Eastern Alps is the name given to the eastern half of the Alps, usually defined as the area east of a line from Lake Constance and the Alpine Rhine valley up to the Splügen Pass at the Alpine divide and down the Liro River to Lake Como in t ...

, thrown up by the river

Danube The Danube ( ; ) is a river that was once a long-standing frontier of the Roman Empire and today connects 10 European countries, running through their territories or being a border. Originating in Germany, the Danube flows southeast for , pa ...

Geography

The fairly level area is a fertile alluvial plain and has the shape of a spindle, over an area of by . The Danube enters the basin at

Krems an der Donau Krems an der Donau () is a town of 23,992 inhabitants in Austria, in the federal state of Lower Austria. It is the fifth-largest city of Lower Austria and is approximately west of Vienna. Krems is a city with its own statute (or ''Statutarst ...

and it leaves at

Korneuburg Korneuburg () is a town in Austria. It is located in the state Lower Austria and is the administrative center of the district of Korneuburg. Korneuburg is situated on the left bank of the Danube, opposite the city of Klosterneuburg, and is 12&n ...

. The basin is a settled ground filled with

tertiary sediment Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start ...

s and rubbly deposits of the Danube and other rivers of the

Alpine Foreland The Alpine Foreland, less commonly called the Bavarian Foreland,Dickinson, Robert E (1964). ''Germany: A regional and economic geography'' (2nd ed.). London: Methuen, pp. 585-586. . Bavarian Plateau or Bavarian Alpine Foreland (german: Bayerisches ...

. Its fertile terraces are farmed with wheat, maize, potatoes and

sugar beet A sugar beet is a plant whose root contains a high concentration of sucrose and which is grown commercially for sugar production. In plant breeding, it is known as the Altissima cultivar group of the common beet ('' Beta vulgaris''). Together ...

References

{{reflist Geology of Austria Sedimentary basins of Europe