Johann Heinrich Christfried Dau (1790–1831) was a

Holstein Holstein (; ; ; ; ) is the region between the rivers Elbe and Eider (river), Eider. It is the southern half of Schleswig-Holstein, the northernmost States of Germany, state of Germany. Holstein once existed as the German County of Holstein (; 8 ...

- Danish geologist and writer, whose identification of peat layers led eventually to a system of classifying and dating post-glacial northern European

paleoclimate Paleoclimatology ( British spelling, palaeoclimatology) is the scientific study of climates predating the invention of meteorological instruments, when no direct measurement data were available. As instrumental records only span a tiny part of ...

periods, the Blytt–Sernander sequences based on peat stratigraphy. He died at

Altona, Hamburg Altona (), also called Hamburg-Altona, is the westernmost Boroughs and quarters of Hamburg#Boroughs, urban borough (''Bezirk'') of the Germany, German States of Germany, city state of Hamburg. Located on the right bank of the Elbe river, Alton ...

in 1831.

Selected publications

*''Neues Handbuch über Torf, dessen Natur, Entstehung und Wiedererzeugung, Nutzen im Allgemeinen und für den Staat'', Leipzig, 1823. *''Allerunterthänigster Bericht an die Königliche Dänische Rentekammer über die Torfmoore Seelands nach einer im Herbste 1828 deshalb unternommenen Reise''. Copenhagen and Leipzig, 1829. * ''Om Retfærdighed og Frihed og deres nødvendige Samværen, især i politisk Henseende,'' Copenhagen, 1831.

Selected publications

Further reading