Surface geology - Geological overview map of the German North Sea
Description
The geological overview map (GÜK200) provides detailed information on the stratigraphy, petrography and genesis of the geological units shown. In the revised GÜK200, the surface geology on the mainland is shown in up to two overlays. The shallow, overlying soil is not shown. In the marine area, only the petrography of the recent seabed is shown, which comprises the uppermost 20 cm of the seabed. In accordance with the original GÜK200 map sheets, the seabed is addressed stratigraphically as recent seabed. The entire map area is dominated by Quaternary formations, whereby a distinction is made between Pleistocene and Holocene deposits. The Pleistocene deposits are dominated by the glacial deposits of the Elster, Saale and Weichselian cold periods, with glacial basin sediments, boulder clay of the ground moraines and glaciofluvial, fluviatile and aeolian deposits. After the end of the glaciations with the rising sea level, the various marine facies, sediments of the land/sea transition zone and on land, above all the fens and raised bogs dominate in the Holocene. Outcrops of older geological units are linked to the dynamics of the Zechstein salts in the subsurface and only occur sporadically in the map area, such as the well-known red sandstone cliffs of Helgoland.
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Tags
- geopotenzial-deutsche-nordsee
- geologie
- petrographie
- genese
- geoldg
- stratigraphie
- gpdn
- geopotential